CN1526053A

CN1526053A - Fuel delivery system

Info

Publication number: CN1526053A
Application number: CNA028111389A
Authority: CN
Inventors: Ф��T��; 肖恩·T·里格尼
Original assignee: Vaporate Pty Ltd
Current assignee: Vaporate Pty Ltd
Priority date: 2001-06-01
Filing date: 2002-03-28
Publication date: 2004-09-01
Also published as: JP2004528511A; WO2002097259A1; BR0210121A; EP1392964A4; EP1392964A1

Abstract

A fuel delivery system is disclosed which includes an injector (40) having an end region (43). The end region (43) is provided from heat conducting material such as metal so that the end region can be heated by exhaust gas to heat the temperature of fuel in the injector end region so that the increase in temperature and pressure within the end region causes the fuel to flash into a vapour state immediately the fuel is ejected from the injector. The exhaust gas is supplied by an exhaust gas supply line (70, 402) and can be returned by an exhaust return line (405).

Description

Fuel delivery system

Related application

The application is based on the Australian provisional application No.PR9540 of the Australian provisional application No.PR5397 of application on June 1 calendar year 2001, application on December 13 calendar year 2001 and the U.S. Provisional Application No.60/306606 of application on July 19 calendar year 2001, and requires to enjoy the preference of above-mentioned application.

Technical field

The present invention relates to a kind of fuel delivery system, be used for oil or Fuel Petroleum are flowed to internal-combustion engine, also relate to internal-combustion engine and vehicle with this transporting system.

Background of invention

For improving the fuel efficiency of vehicle, people have carried out test of many times.But progress in this regard is to make that the design of internal-combustion engine is complicated more recently, and its mode of operation is also complicated more.

By convention, be both weight ratios 14.7 to 1 by the optimum mixture ratio of the ignition mixture that fuel and air constituted, this ratio calculates by chemical formula.When under certain given torque curve, operating, when energy and efficient reach balance first, just can obtain under the traditional operation condition, can produce best ratio of spraying.Because the character of fuel has determined that fuel itself is a kind of cryogenic substance, thereby fuel also plays refrigerating function in the firing chamber of motor, to keep for example integrity of valve and piston of contact surface.Reduce burning and will cause chamber temperature and exhaust gas temperature to raise with fuel, parts under this high temperature with fusion, perhaps parts since expand and interior spacing of motor and matching gap reduce quit work, thereby cause motor to break down.

People have attempted by providing certain heating machanism to improve fuel efficiency between the sparger of motor and cylinder.The working principle of these systems is: utilize the fuel of sparger atomizing of liquids state, behind the course of injection and before this fuel is delivered to cylinder, make this fuel gasification.

Summary of the invention

The purpose of this invention is to provide a kind of like this fuel delivery system, this system can improve fuel efficiency, and is easy to an optional feature as available engine, perhaps is easy to as a primitive part making motor.

A first aspect of the present invention can think be that a kind of fuel delivery system that is used for internal-combustion engine, this internal-combustion engine have at least one cylinder and in this cylinder pistons reciprocating, this system comprises;

Fuel injector comprises main body and end regions, and this end regions transfer the fuel is to flow to cylinder with fuel certainly;

Fuel channel extends between fuel injector and the cylinder, so that fuel is delivered to cylinder from conveyor member; And

Heating equipment, end regions to sparger heats, thereby before this sparger sprays this fuel, heat the fuel in this end regions, like this when sparger ejection fuel, this fuel can be converted to gaseous state, marches in the way of cylinder along fuel channel self-injection device at this fuel simultaneously, can keep this fuel and be in gaseous state.

The inventor finds that heating fuel is so that the conventional art of this fuel gasification is to heat this fuel again after the ejection of fuel self-injection device.Therefore in the prior art, the fuel that is sprayed is liquid state rather than gaseous state, provides certain heating machanism in the downstream of sparger, so that this fuel is converted to gaseous state.Because it is shorter that fuel self-injection device under the pumping action of motor marches to the time that cylinder spends, path length is shorter simultaneously, thereby this heating machanism can not play the effect that this liquid fuel is converted to gaseous state fully, so the operation of these systems can not be satisfactory.Therefore, the system that carries out work based on this principle does not also have any significant commercial application.The inventor finds, the end regions of heated injectors, and thereby heat the fuel of this sparger in that part of, because the constant pressure in this sparger, this fuel will maintain liquid state in end regions, in case but this fuel leaves sparger, and pressure reduces when leaving nozzle owing to this fuel, owing to the thermal expansion of the fuel that is heated, liquid fuel will promptly be converted into steam simultaneously.

Therefore, when fuel left sparger, this fuel can promptly be converted to gaseous state by liquid state by the flashing effect at sparger place.Thus, all fuel all will gasify, and march in the way of cylinder at fuel self-injection device, keep this fuel and be in gaseous state.Utilize heating equipment to keep this fuel fume and be in gaseous state, this heating equipment when fuel fume leaves sparger, to this supply of fuel heat to keep vapor state.

When steam when fuel channel is advanced, in the air-flow around this steam will outwards expand into, this air-flow can slightly cool off this fuel in the process that fuel is advanced along passage length, but, because the heat of this fuel and this fuel are distributed in the air-flow that flows along fuel channel, thereby will keep this fuel fume and be in gaseous state, so just the fuel with vapor state flows to cylinder.In other words, the fuel in the sparger is heated producing flashing effect at this fuel when end regions sprays, and under the ambient temperature of heat, keep this gaseous state.Fuel fume is diluted in the common suction air, can cool off this heated gas mixture, but the temperature of mixed gas is still higher, thereby the fuel of vapor state can be flowed to cylinder.Because with fuel gasification, and the fuel of vapor state flowed to cylinder, thereby motor is when keeping all parts integrities, can operate by poorer mixture, power output improves and has improved effulent, the more important thing is, can prevent that contingent temperature is too high under poor burning mixt, thereby when keeping engine performance, greatly reduce fuel used amount.

The end regions of heated injectors, rather than the main body of this sparger, just can not damage this sparger, if heat the integral body of this sparger, perhaps directly temperature is high enough to make fuel flow to this sparger, just very likely damages this sparger at the fuel of discharging the rapid generation in back flashing effect from end regions.

Optionally, increase power if desired, rather than reduce fuel consumption, can continue the fuel supplying mixture, rather than reduce fuel mixture, can increase engine power thus.

Preferably, the end regions of sparger is heat conduction, thereby can heat the end regions of this sparger, so that heat transfer is arrived in the end regions of this sparger.

In a preferred embodiment of the invention, remove the shell on the conventional injector end axle, with this sparger end axle that exposure is made of metal, the end axle of this exposure has just constituted the end regions of sparger like this, utilizes heating equipment to heat this end regions.

Preferably, the device that is used for the heated injectors end regions comprises exhaust-carrying device, this exhaust-carrying device is used for carrying 7 end regions to this sparger by the waste gas that burning generated of fuel and air in the motor, to heat the end regions of this sparger.

Preferably, exhaust-carrying device guides to the end regions of sparger with waste gas, so that this waste gas closely contacts with the end regions of this sparger, thus the fuel that heats the end regions of this sparger and be positioned at this injector end region.

In another embodiment of the invention, the device that is used for the heated injectors end regions comprises a heat conduction supporting member, this supporting member is used to support and contact the end regions of sparger, this heat conduction supporting member also contacts with the heated portion of motor, the heat of motor can pass to the end regions of sparger via this supporting member like this, to heat the end regions of this sparger.

Preferably, this supporting member comprises a ring-shaped article, this ring-shaped article has cylindrical outer wall and cylindrical hole, this cylindrical outer wall is contained in the interior hole of motor heated portion, with this ring-shaped article of heat transferred with motor, this cylindrical hole has the cylinder shape inner wall that is used to receive injector end region, and end regions just contacts with this cylinder shape inner wall like this, heat just can pass to this ring-shaped article by heated portion, and then passes to the end regions of this sparger.

In an embodiment of the present invention, this fuel delivery system comprises a heat exchanger, this heat exchanger has the heat-exchange tube in the engine exhaust passage of being arranged on, one end of this heat-exchange tube is connected with an air supply pipe, the other end is connected with a hot air recurrent canal, this air supply pipe is used to transport the air from air inlet, and this hot air recurrent canal is used for having heated in heat-exchange tube air is delivered to the end regions of sparger and extends passage between this fuel conveyor member and the cylinder.

In an embodiment of the present invention, the heated portion of this motor is positioned at the exhaust side of motor and is positioned near the exhaust header, provide an air to enter pipe, this air enters pipe and is used for the end regions of guiding cool air to sparger, and the end regions of this sparger can be not overheated like this.

In other embodiments of the invention, this heated portion is positioned at the air approaching side of motor.

In this embodiment of the present invention, provide one to enter the hole, enter this hot air recurrent canal to allow waste gas, waste gas and air this hot air recurrent canal of just flowing through like this, and with this waste gas and Air mixing gas delivery end regions and the passage to sparger.

Preferably, enter the hole and be positioned at heat-exchange tube, and the position that is connected with the air supply pipe near heat-exchange tube.

In this embodiment of the present invention, the air supply pipe is connected with idling air supply 6 pipes of motor, the idling air supply tube of just flowing through like this, and march to the passage that extends between fuel conveyor member and the cylinder, by making this idling air stream through heat-exchange tube and make this idling air and mix mutually from entering the waste gas that the hole enters, heat this idling air, and this waste gas and AIR MIXTURES be supplied to the end regions of sparger and extend passage between fuel conveyor member and the cylinder.

Preferably, heat exchanger comprises a pipe, and this pipe is connected between the exhaust header and an outlet pipe of motor, and this outlet pipe discharges the exhaust in the atmosphere.

Preferably, have a fuel-air delivery pipe in the passage between fuel conveyor member and the cylinder, this delivery pipe is provided in the air inlet passage of motor.

Preferably, a cyclone separator is set in the fuel-air delivery pipe, with when the mixture of this air, waste gas and fuel fume when the fuel-air delivery pipe is advanced, make this mixture become the whirlpool shape, thus mixing air, waste gas and fuel fume fully.

Preferably, this motor comprises a plurality of fuel injectors, and the hot air recurrent canal is connected with a distribution piping, and this distribution piping has many discharge tubes, every discharge tube is corresponding to each fuel injector, and the bearing of trend of every discharge tube all is basically perpendicular to the direction from each sparger ejection fuel.

Be higher than in speed under the situation of no-load speed, be provided for supporting the air of fuel combustion via inlet manifold, in a preferred embodiment, only the idling air flows through this air fuel delivery pipe, then carries via the inlet manifold and the gas-entered passageway of motor being higher than the additional air that is used to support fuel under the situation of idling speed.

Therefore, the pipe that is used for fuel is delivered to cylinder is compared little with the common size of gas-entered passageway, and because fuel was carried the air fuel pipe with heated air and waste gas, thereby can carry out good heat exchange, this fuel of heating in the passage of whole piece basically of fuel in this air fuel pipe so just can be with the vapor fueled cylinder that flows to.

In the second embodiment of the present invention, the passage that is used for transfer the fuel and air is via exhaust passage and motor top and arrive the air approaching side, this passage has the inlet in the exhaust passage, so just waste gas can be sucked in this passage, to mix mutually with the air and the fuel that flow to cylinder by this passage.

Therefore, according to this embodiment of the present invention, be used to make the main heat exchange of fuel gasification to occur in this passage of extend through engine exhaust passage.

Preferably, the air supply pipe is through being arranged on the heat exchanger on the engine exhaust passage, and this heat exchanger is used for this air of preheating, and this air will be transported to around fuel injector then.

In another embodiment of the invention, this passage equally is arranged in the inlet manifold with first embodiment of the invention, this passage has that air in the inlet manifold of stretching into enters arm and the waste gas that is connected with the exhaust passage of motor enters arm, one waste gas pipeline extends this waste gas and enters arm and air and enter between the arm and this passage of extend through, like this, when fuel injector sprays into fuel in this passage, this fuel will with enter the air that air enters arm and mix mutually, and in this passage, advance around waste gas pipeline, thereby with this waste gas pipeline generation heat exchange, with air and the fuel in this passage of heating in the way that marches to cylinder at this fuel self-injection device, the waste gas of this waste gas pipeline of flowing through simultaneously can flow into air and enter arm, and be drawn in this passage with the air that enters via this air in the arm inlet passage, to heat the mixture of this air and fuel further.

In an embodiment of the present invention, this system comprises the temperature maintenance device, and the exhaust gas temperature that is used for being supplied to injector end region maintains certain predetermined temperature, and is overheated to prevent this end regions.

Preferably, this temperature maintenance device comprises a valve, and flowing of the cool air that this valve is used for optionally allowing or cut-out and waste gas mix mutually reduces the temperature of this waste gas thus.

Preferably, near end regions, provide a temperature sensing device, be used to monitor the temperature of waste gas,, just open this valve and flow in this waste gas to allow cool air if this temperature is higher than predetermined temperature.

A second aspect of the present invention can be thought and is a kind of fuel delivery system that is used for internal-combustion engine, the piston that this internal-combustion engine has at least one cylinder, move in this cylinder, be used for exhaust passage that air is imported the gas-entered passageway in this cylinder and is used to discharge waste gas in this cylinder, this system comprises:

Fuel injector comprises main body and end regions, certainly this end regions transfer the fuel;

, a small channel, the cross-section area of this small channel and volume be all less than the gas-entered passageway that extends between sparger and cylinder, and this small channel is used for transfer the fuel and is used to support the required certain share air of engine internal fuel burning under the situation of no-load speed being higher than; And

Heating equipment, end regions to this sparger heats, thereby before sparger ejection fuel, heat the fuel in this end regions, like this when this sparger ejection fuel, this fuel can be converted to gaseous state, marches in the way of cylinder along fuel channel self-injection device at this fuel simultaneously, can keep this fuel and be in gaseous state.

In an embodiment of the present invention, this small channel is the part of distance between extend through sparger and the cylinder only, this passage has first end of close injector end region and second end that is connected with gas-entered passageway, fuel fume will at first flow through this small channel like this, and then it is interior to mix mutually with combustion air to enter this gas-entered passageway, and this combustion air is to be drawn in the gas-entered passageway under the pumping action of motor.

In an embodiment of the present invention, this heating equipment comprises a heat exchanger, is used for before air is transported to injector end region, heats this air part.

Preferably, in this embodiment of the present invention, this air part is mixed mutually with the waste gas of discharging from cylinder, and to heat this air further, so just the mixture with heated air and waste gas is supplied to injector end region and passage.

Preferably, this air partly is the idling air of motor supply, this system comprises an idling air supply pipe, this idling air supply Guan Ziyi idle running helix encloses and extends to heat exchanger, and be connected with a heat-exchange tube in this heat exchanger, this heat-exchange tube is connected with a hot gas recurrent canal, also comprise the device that makes waste gas enter this hot gas recurrent canal, like this this waste gas just with the idling air mixing to heat this idling air, this recurrent canal is in order to be supplied to injector end region with waste gas and idling Air mixing gas, make the mixed gas of the idling air and waste gas that is heated surround injector end region heating this end regions, and the fuel fume of this sparger ejection proceed to cylinder with the mixed gas of the idling air and waste gas that is heated via this row of passages.

In an embodiment of the present invention, have a cyclone separator in this passage, be used to make the mixture of idling air, waste gas and fuel fume to form the whirlpool shape, thereby proceed to along row of passages in the way of cylinder, mix this mixture fully at this mixture.

In an embodiment of the present invention, the hot air recurrent canal is connected with a distribution piping, this distribution piping has a plurality of outlets, each outlet is corresponding to one in a plurality of fuel injectors, this outlet is used for waste gas and idling Air mixing gas are supplied to fuel injector, mixes mutually with the fuel fume with the sparger ejection.

In an embodiment of the present invention, this passage comprises a pipe that is installed in the engine intake passage, and the cross-section area of this pipe and volume are all less than the cross-section area and the volume of gas-entered passageway.

Preferably, fuel injector is arranged in a hole at motor top, and this hole is communicated with distribution piping and fuel-air delivery pipe.

In another embodiment of the invention, this pipe constitutes one with the top of motor, rather than is installed in a single pipe in the engine intake passage.

Preferably, provide the idling air by an idling air transfer block that is installed between idle running spiral winding and the throttle valve body, this block has first duct and second duct, this first duct is communicated with an inlet that is used to carry the idling air, and this second duct is communicated with the channel connection that passes the spiral winding that dallies and with idling air supply pipe.In this device, the idling air that blocks the fly valve downstream side that is positioned at this throttle valve body enters the duct, if so not via this idling air supply pipe, the idling air just can not enter in the motor.

In another embodiment of the invention, heat exchanger is formed by the part passage, and in use, this part passage is exposed in the waste gas that cylinder is discharged, and this passage leads to the gas-entered passageway of motor via block.

Preferably, this passage is through a duct, and this duct extends to gas-entered passageway from the exhaust passage of motor.

In such an embodiment, this passage is communicated with a spacer block, has a hole in this spacer block, and this Kong Yuyi distribution piping is communicated with, and this distribution piping is communicated with idling air supply pipe to receive the idling air.

In one embodiment, sparger is positioned at distribution piping, and the end regions of this sparger contacts with distribution piping, thereby heat this end regions, this sparger is sent into fuel in this hole of spacer block, fuel just mixes mutually with idling air supply pipe air supplied like this, and then enters in the gas-entered passageway and cylinder of motor via this passage.

In such an embodiment, distribution piping and spacer block engage on the exhaust header of motor, this exhaust header provides a kind of quite hot heating source, end regions with heated injectors, the idling air is flowed to distribution piping not only can provide combustion air, also end regions is played cooling action, overheated to prevent this end regions.

Preferably, have a hole in this passage, this hole allows to be in heating status to keep the fuel and the air of advancing along this passage in the waste gas inlet passage, so just the fuel of vapor state can be delivered to the gas-entered passageway and the cylinder of motor.

In another kind of embodiment, distribution piping and spacer block are isolated mutually, and idling air supply pipe extend through is positioned at the heat exchanger on the engine exhaust collector, are supplied to the air part of this distribution piping with heating, and and then the end regions of heated injectors.

Equally, in this embodiment of the present invention, this passage can be a pipe, and this pipe is installed in the exhaust passage, passes the duct in the top, and opens wide in the gas-entered passageway of motor.But,, also can make this pipe and duct form one by with this pipe casing or be drilled in the top of motor.

In another embodiment of the invention, this passage comprises that a waste gas enters arm, this waste gas enters arm and is communicated with the exhaust passage of motor, also be connected with a flue gas leading that in this passage, extends, this passage also has an air and enters an arm and a fuel delivery end, entering this flue gas leading that arm is connected with waste gas stretches into air and enters in the arm, some of advancing via inlet manifold suck air and can enter this air and enter in the arm like this, and mix mutually with waste gas that this flue gas leading is carried, enter then in this passage, fuel in spraying into this inlet end proceeds to cylinder along this row of passages, the air and the fuel of flowing through in the waste gas of flue gas leading and the passage carry out heat exchange, and this waste gas and the mixture of this air and fuel fume mix mutually and also can keep fuel fume and be in gaseous state simultaneously.

In such an embodiment, the outlet end of flue gas leading is positioned near the dome-shaped deflection plate, but the deflection waste gas of discharging from this flue gas leading so makes this waste gas flow through air along the direction of air stream and enters arm, and enters the air that flows to passage in the arm with this air and mix mutually.

In a preferred embodiment of the invention, this passage, waste gas enter arm and air and enter arm and constitute an integral tube, and this integral tube is installed in the gas-entered passageway of motor.But, in other embodiments, also can with this pipe casing in motor block or top, perhaps pierce in motor block or the top, to constitute original device with this motor block or top.

A third aspect of the present invention can be thought and is a kind of fuel delivery system that is used for internal-combustion engine, the piston that this internal-combustion engine has at least one cylinder, move in this cylinder, be used for exhaust passage that air is imported the gas-entered passageway in this cylinder and is used to discharge waste gas in this cylinder, this system comprises:

Article one, passage is separated with this gas-entered passageway, extends between sparger and cylinder, and the fuel and the idling air that are used for the device of self-injection in the future flow to cylinder; And

Heating equipment, end regions to this sparger heats, thereby before this sparger ejection fuel, fuel in the heated end portion zone, like this when sparger ejection fuel, this fuel can be converted to gaseous state, marches in the way of cylinder along fuel channel self-injection device at this fuel simultaneously, can keep this fuel and be in gaseous state.

In an embodiment of the present invention, this heating equipment comprises a heat exchanger, be used in the idling air is transported to injector end region and passage before, heat this idling air.

Preferably, in this embodiment of the present invention, this idling air mixes mutually with the waste gas of discharging from cylinder, and to heat this air further, so just the mixture with heated air and waste gas is supplied to injector end region and this passage.

Preferably, this system comprises an idling air supply pipe, this idling air supply Guan Ziyi idle running helix encloses and extends to this heat exchanger, and be connected with a heat-exchange tube in this heat exchanger, this heat-exchange tube is connected with a hot gas recurrent canal, also comprise the device that makes waste gas enter the hot gas recurrent canal, like this this waste gas just with the idling air mixing to heat this idling air, this recurrent canal is in order to be supplied to the fuel conveyor member with waste gas and idling Air mixing gas, make the mixed gas of this idling air and waste gas that is heated surround the fuel conveyor member heating this fuel conveyor member, and make fuel that the fuel conveyor member carries with the mixed gas of the idling air and waste gas that is heated this passage of advancing.

In an embodiment of the present invention, have a cyclone separator in this passage, be used to make the mixture of idling air, waste gas and fuel to form the whirlpool shape, thereby proceed to along row of passages in the way of cylinder, mix this mixture fully at this mixture.

In an embodiment of the present invention, this hot air recurrent canal is connected with a distribution piping, this distribution piping has a plurality of outlets, each outlet is corresponding to one in a plurality of fuel injectors, this outlet is used for waste gas and/or idling Air mixing gas are supplied to the fuel conveyor member, to mix mutually with this fuel conveyor member supplied fuel.

Preferably, have a hole in this passage, this hole allows to be in heating status to keep the fuel and the air of advancing along this passage in the waste gas inlet passage.

Of the present invention can think on the one hand again be that a kind of fuel delivery system that is used for internal-combustion engine, this internal-combustion engine have at least one cylinder and in this cylinder pistons reciprocating, this system comprises;

One sparger is used for fuel is introduced in the cylinder, this sedimentation of fuel is being positioned on the piston of cylinder, thereby made before fire fuel, and this fuel is just gasifiable.

Preferably, before fuel being sent into cylinder and being delivered on the piston, heat this fuel.

Preferably, this heater comprises a heat exchanger, utilizes the waste gas of motor to heat this heat exchanger, and the fuel pipe exhaust gas source of flowing through so just utilizes waste gas to heat the fuel that flow to sparger via fuel pipe.

But in other embodiments, this heat exchanger also can adopt the hot water by the motor supply, perhaps utilizes electric power to heat this fuel pipe, and heats the fuel that flow to sparger via this fuel pipe further.

Preferably, this sparger is positioned at the sidewall of cylinder.

Preferably, have a hole in this sidewall, a sleeve is arranged in this hole, and sparger is arranged in this sleeve.

Preferably, this sleeve has an exit orifice, and this exit orifice extends to the inside of cylinder from the hole.

Preferably, the sidewall of this cylinder comprises a block part, cylinder is positioned at this block part, this hole is formed in the wall of block and partly passes this block wall, this hole is communicated with the hole that a diameter reduces, and this hole extends to cylinder from this hole, and sleeve comprises a hollow pole socket that is arranged in the hole that this diameter reduces, the nozzle of fuel injector can be positioned at this pole socket like this, to spray into fuel in the cylinder and to be sprayed onto on the piston.

Preferably, this sleeve phases down to inner terminal from its outer end, and the inner just is wider than in the outer end like this, thereby the sparger of different size can be arranged in this sleeve, and the end regions of guaranteeing sparger simultaneously is positioned near the end of close cylinder interior of this sleeve.

Preferably, by and this cylinder wall or engine block body wall between the heat transmission heat the end regions of this sparger, with when this sparger sprays this fuel, this fuel can promptly gasify.

The present invention also provides a kind of fuel delivery system, this transporting system is used for oil or Fuel Petroleum are flowed to internal-combustion engine, the piston that this internal-combustion engine has at least one cylinder, move in this cylinder, be used for exhaust passage that air is imported the gas-entered passageway in this cylinder and is used to discharge waste gas in this cylinder, this system comprises:

Fuel injector comprises main body and the end regions that is formed by Heat Conduction Material, like this when heated end portion when zone, and can be with the fuel in the heat transferred injector end region, to heat the fuel in this injector end region;

One Room, around the end regions of this sparger, this chamber has an inlet and an outlet, and the part of injector end region is stretched out this chamber to be communicated with the gas-entered passageway of motor, seals this chamber so that the gas-entered passageway of this chamber and motor is isolated; And

One hot fluid feedway, be used for carrying hot fluid to this chamber, hot fluid can flow through this chamber and discharge from outlet like this, this hot fluid is used to heat this indoor injector end region, thereby via this end regions with the fuel in the heat transferred end regions, heating this fuel, in case sparger ejection fuel like this, because the thermal expansion of heating fuel, this fuel will promptly be converted to gaseous state after the ejection of self-injection device.

The present invention also provides a kind of fuel delivery system that is used for internal-combustion engine, the piston that this internal-combustion engine has at least one cylinder, move in this cylinder, be used for exhaust passage that air is imported the gas-entered passageway in this cylinder and is used to discharge waste gas in this cylinder, this system comprises:

One shell is used to receive the end regions of sparger;

First Sealing is used for when sparger is positioned at shell, with the sealing of the end regions of sparger in the enclosure;

Second Sealing is used for when sparger is positioned at shell, with the sealing of the end regions of sparger in the enclosure, so just defines a Room between the end regions of this shell, first Sealing, second Sealing and sparger;

One waste gas pipeline is connected with shell, and is communicated with formed chamber when sparger is positioned at shell;

One waste gas recurrent canal is communicated with formed chamber when sparger is positioned at shell, and this waste gas pipeline and waste gas recurrent canal have a waste gas inlet end and a waste gas exhaust end respectively; And

One venting gas appliance flange, be connected with engine's exhaust system, the waste gas inlet end of waste gas pipeline and the waste gas exhaust end of waste gas recurrent canal are connected with this venting gas appliance flange respectively, like this when sparger is positioned at shell, through the waste gas of this venting gas appliance flange can enter waste gas pipeline, this chamber of flowing through, then via the vent systems of waste gas recurrent canal return engine, thereby but the end regions of heated injectors.

Brief description of drawings

Will be with reference to the following drawings with formal description the preferred embodiments of the present invention of example, wherein:

Fig. 1 is the side view of a motor, and this motor has the fuel delivery system according to an embodiment of the present invention;

Fig. 2 is the partial end view of system shown in Figure 1;

Fig. 3 is the schematic representation along Fig. 2 center line III-III;

Fig. 4 is a width of cloth schematic representation, and expression is according to the conveying of the idling air of first embodiment of the invention;

Fig. 5 is the end elevation of second embodiment of the invention;

Fig. 6 is the end elevation of third embodiment of the invention;

Fig. 7 is the end elevation of fourth embodiment of the invention;

Fig. 8 is the detailed view in part embodiment illustrated in fig. 7;

Fig. 9 is the end elevation of fifth embodiment of the invention;

Figure 10 is a top view embodiment illustrated in fig. 9;

Figure 11 is the another kind of embodiment's of the present invention a schematic representation;

Figure 11 A is the schematic representation of a kind of heat exchanger of employing embodiment illustrated in fig. 11;

Figure 11 B is the schematic representation of seeing from an end of this heat exchanger;

Figure 11 C is the schematic representation of seeing from the other end of heat exchanger shown in Figure 11 A;

Figure 12 is another embodiment's of the present invention a schematic representation;

Figure 12 A represents the part in embodiment illustrated in fig. 12;

Figure 12 B is the side view of one of parts shown in Figure 12 A;

Figure 12 C is the bottom view of parts shown in Figure 12 B;

Figure 12 D is the top view of parts shown in Figure 12 B;

Figure 13 is another embodiment's of the present invention a schematic representation;

Figure 14 is another embodiment's of the present invention a schematic representation;

Figure 15 is another embodiment's of the present invention a schematic representation;

Figure 16 is the schematic representation of a kind of version embodiment illustrated in fig. 15;

Figure 17 is another embodiment's a schematic representation;

Figure 17 A is a bottom view embodiment illustrated in fig. 17;

Figure 18 is the schematic representation embodiment illustrated in fig. 17 after the assembling;

Figure 18 A is the bottom view of Figure 18;

Figure 19 is the schematic representation of a kind of variant embodiment illustrated in fig. 17;

Figure 19 A is a bottom view embodiment illustrated in fig. 19;

Figure 20 is the schematic representation embodiment illustrated in fig. 19 after the assembling;

Figure 20 A is a bottom view embodiment illustrated in fig. 20;

Figure 21 represents the schematic representation that is installed on the motor embodiment illustrated in fig. 17;

Figure 22 represents the schematic representation that is installed on the motor embodiment illustrated in fig. 19;

Figure 23 has represented the middle fuel heat exchanger that adopts embodiment illustrated in fig. 22;

Figure 24 is another embodiment's of the present invention a schematic representation, and this embodiment is intended as the optional feature of motor; And

Figure 25 is a kind of version embodiment illustrated in fig. 24, and this embodiment is intended as the primitive part of motor.

DETAILED DESCRIPTION OF THE PREFERRED

With reference to accompanying drawing 1 to 4, they represent the first embodiment of the present invention, the motor 10 that schematically shows in the present embodiment is a six cylinder engine, and operate this motor 10 by traditional approach, difference only is that this motor 10 has adopted the fuel delivery system according to first embodiment of the invention.

As the clear expression of Fig. 1 and 2, this motor 10 comprises exhaust header 12, and this exhaust header 12 is communicated with the exhaust passage 14 that is arranged in motor 10 tops 16 (Fig. 2 has only represented an exhaust passage).Outlet valve 18 also is provided, and this outlet valve 18 is used to open and shutoff exhaust passage 14, and to allow to discharge the waste gas in the cylinder 20, this cylinder 20 is positioned at cylinder block 22.As traditional approach, piston 24 is arranged in this cylinder 20, and is connected with crankshaft 26 via connecting rod 28.As traditional approach, the bottom of an oil storage tank 19 these motors of sealing.

Also have gas-entered passageway 30 in the top 16, this gas-entered passageway 30 is connected with the inlet manifold 32 that air is flowed to cylinder 20.One suction valve 34 is arranged in this gas-entered passageway 30, is used for optionally allowing fuel and air to enter in this cylinder 20.As traditional approach, can utilize the spark plug (not shown), perhaps under the situation of diesel engine, compress according to traditional approach, light the fuel and the air that flow to this cylinder 20.

Have a hole 38 in this inlet manifold 32, fuel injector 40 is positioned at this hole 38.As traditional approach,, in the end elevation of Fig. 2, only represented a fuel injector for each cylinder of this motor all provides a fuel injector 40.One fuel source 42 according to traditional approach to these sparger 40 fuel supplying.

In this embodiment of the present invention, sparger 40 is arranged in the position in hole 38 will more lean on the back with respect to the traditional location that sparger is arranged in internal-combustion engine.The reason of She Zhiing will become obvious in following specification like this.For this sparger 40 being installed on the position after more leaning on, the big Sealing 44 and 46 that utilization is positioned at the sparger bases comes the conventional seals part of substituted ring around sparger, no matter the still big Sealing 44 and 46 of conventional seals part all is used for sparger is sealed in this hole 38, compare with tradition like this, this sparger 40 just can be with respect to cylinder 20 more by the back.But as the clear expression of Fig. 2, the end regions 43 of sparger 40 is positioned at hole 38, and this end regions 43 is exported fuel certainly, can fuel be flowed to cylinder 20 from this sparger 40 like this.This end regions 43 can have a nozzle 41, and this nozzle 41 is exported fuel certainly, perhaps can be directly from the end surfaces of this end regions 43 and via a plurality of holes (not shown) transfer the fuel in this end surfaces.

In addition, this sparger 40 is a kind of conventional injector, has just removed common case member around its end regions 43, to expose this end regions 43.This end regions 43 is formed by the metal shaft bar of conventional injector, can heat this metal end zone 43 like this, to heat the fuel in this end regions 43, below will illustrate in greater detail it.

As shown in Figure 1, throttle valve body 48 is supporting a fly valve 50, and this fly valve 50 is used to control the air mass flow that enters in the collector 32.One idle running spiral winding (idle solenoid) 52 also is installed, is used to control idling air (idle air) amount of walking around this fly valve 50.In traditional fuel delivery system, idle running spiral winding 52 comprises an air passageways 53, this air passageways 53 is bypass air flues of fly valve 50, like this when closing this fly valve 50 (, when the race of engine), just walk around this fly valve 50 and carry air, to keep the burning of engine internal fuel.

In the first embodiment of the present invention, the spiral winding 52 that will not dally is directly installed on the throttle valve body 48.But between this idle running spiral winding 52 and throttle valve body 48, provide an idle block 55.

As the clear expression of Fig. 4, this block 55 has first passage 57, and this first passage 57 is communicated with the air inlet of throttle valve body 48 and the passage 53 in the idle running spiral winding 52.This block 55 also has second channel 57, and this second channel 57 also is communicated with passage 53, and this second channel 57 is communicated with an idling air supply pipe 60 (referring to Fig. 1) via a connection piece 59.

Seal the idling air return aperture in this throttle valve body 48, because this embodiment of the present invention does not use this hole, this idling air return aperture is generally used for air is sent to from passage 53 downstream side of fly valve 50.

Return back to Fig. 1, exhaust header 12 is connected with engine's exhaust system 71 usually, with the toxic emission in this collector 12 in atmosphere.But in this embodiment of the present invention, a heat exchanger 61 that will have heat-exchange tube 62 inserts between this collector 12 and the vent systems 71.This pipe 62 has flange 63 and 65, this flange 63 and 65 respectively with exhaust header 12 on flange and the flange on the vent systems 71 be meshed.

Idling air supply pipe 60 stretches in this pipe 62 via the hole 65a on heat-exchange tube 62 sidewalls, and is connected with heat-exchange tube 66 in this pipe 62.As clear expression, this heat-exchange tube 66 extends in pipe 62, can carry out heat exchange between high-temp waste gas and idling air thus, wherein, high-temp waste gas also flows to vent systems 71 through this pipe 62, and the idling air flows through idling air duct 60 and flow through the interior heat-exchange tube 66 of this pipe 62.This heat-exchange tube 66 has one and enters hole 67, and like this, waste gas can flow in this pipe 66, and mixes mutually with the idling air, as will be described in more detail.One hot air recurrent canal 70 is connected with the other end of this pipe 66, and leaves this pipe 62 via the hole 65b in pipe 62 walls.This tube air heater 70 (as Fig. 2 clear expression) extend to this distribution piping 72 via the lug boss 69 on the distribution piping 72.Also provide an air temperature sensor 73, the air temperature that enters this distribution piping 72 with measurement.

This distribution piping 72 has six landing pipes (droptube) 74 (whole six all are illustrated among Fig. 3) that stretch from this distribution piping 72 downwards.Every landing pipe 74 all is communicated with a hole 75, and this hole 75 is drilled in the inlet manifold 32 and with hole 38 and is communicated with, and sparger 40 is positioned at this hole 38.As the clear expression of Fig. 2, this pipe 75 is similar to and aligns with the outgassing nozzle 41 of sparger 40.

All has the pipe 78 that is used for transfer the fuel and air in each gas-entered passageway 30.In each gas-entered passageway 30, this pipe 78 all from the hole 38 that is positioned at injector nozzle 41 little downstream extend to suction valve 34 directly over.In every pipe 78, be provided with the cyclone separator 79 of spiral metal strips, this cyclone separator 79 is used to make the air of flowing pipe 78 and fuel mixture to become the whirlpool shape, thereby help the thorough mixing of air, fuel and waste gas, fully contact, as subsequently will be in greater detail.

Should manage in 78 load holes 38, and an end 81 of this pipe 78 expands outwardly usually, thereby be convenient to make the mixture of the fuel, air and the waste gas that are delivered to hole 38 to enter this pipe 78.

In the operating process of motor, via the passage 57 in the block 55, passage 53, then again via the second passage 57 in the block 55 with in the idling air suction idling air supply pipe 60,57 places flow to this pipe 60 with the idling air at above second passage.As traditional approach, when by shaking motor or making piston 24 in cylinder 20 during to-and-fro motion by this motor of normal running, just under in-engine pumping action via idle running spiral winding 52 suction idling air.Idling air flowing pipe 60 also enters pipe 66, manages 66 places at this, the idling air with from exhaust header 12 discharges and flow to via this pipe 62 between the waste gas of vent systems 71 and carry out heat exchange, thereby heat this idling air.Simultaneously, some waste gas also enter in this pipe 66 via hole 67, thus with this idling air mixing, and via hot air recurrent canal 70 with above-mentioned mixed gas delivery to distribution piping 72.The size in this hole 67 is preferably set like this, makes exhaust gas constituents account for via 10% to 20% of 66 conveying gas of this pipe.Therefore, waste gas with the ratio that flows through the idling air of idling air duct 60 is: 10% to 20% waste gas, 90% to 80% idling air.But the idling air of being supplied all the time will be enough in order to this motor of operation under idling speed.This hole 67 has the effect of metered volume, and the directional flow that it utilizes waste gas flowing pipe 62 makes charge volume be determined by engine speed and engine load, thereby will be controlled in the preferred ratio scope mentioned above via the exhausted air quantity that this hole 67 sucks.Offer every landing pipe 74 with entering the waste gas of distribution piping 72 and idling Air mixing gas, so just with the mixed gas delivery of this idling air and waste gas to the hole 38.Carry out heat exchange between the idling air of process pipe 66 and the waste gas of flowing pipe 62, thereby heat this idling air; Also interior with enter this pipe 66 via hole 67 waste gas of the idling air of this process pipe 66 mixes mutually simultaneously, thereby heats this idling air further.The temperature that is delivered to the gaseous mixture of distribution piping 72 is preferably about 80 ℃ to 120 ℃, more preferably about 100 ℃.

Via landing pipe 74 and hole 75 this high-temperature gas is delivered to hole 38, thereby this high-temperature gas is closely contacted with the end 43 of sparger 40 and the nozzle 41 on this sparger 40 ends 43.The end 43 and the nozzle 41 (as previously mentioned, this end 43 and nozzle 41 are made of metal) of this sparger 40 have so just been heated.Heat the end 43 of this sparger 40 and the temperature that nozzle 41 just can improve fuel in this end regions 43.Heat the fuel in the end regions 43 of this sparger 40, keep this fuel to be in liquid condition simultaneously under the pressure effect in this sparger.But, in case under the manipulation of control unit of engine, open this sparger with the time via nozzle 41 burner oils of sparger, along with fuel from these nozzle 41 ejections, pressure sharply reduces, fuel will promptly change gaseous state into by liquid state.Should be a flashing effect (flashoff effect) by liquid state to the transformation of gaseous state because fuel is heated in end regions 43, and certainly these nozzle 41 ejection fuel the time pressure promptly descend again, thereby fuel promptly gasifies.Thus, in these nozzle 41 ejection fuel, fuel promptly gasifies.When this fuel left injector nozzle 41, above-mentioned gasified fossil fuel mixed with the mixed gas of waste gas mutually with the high temperature air of carrying via distribution piping 72, maintained gaseous state will be somebody's turn to do the fuel fume that generates via flashing effect.Along with leaving nozzle 41 ' vaporized fuel further, fuel begins to be dispersed in the mixed gas of this high temperature air and waste gas.Mixed gas may slightly cool off, particularly with this mixed gas delivery to the cylinder 20, this mixed gas just with situation that the air that enters from inlet manifold 32 mixes mutually under (this situation also occurs among the following stated embodiment).But, owing to this fuel is maintained gaseous state, and this fuel is dispersed in the mixed airflow of the air that flows to cylinder and waste gas fully, although fuel can cool off slightly, but this mixed gas still keeps a higher temperature, this temperature than this steam not with the mixed gas mixing situation mutually of high temperature air and waste gas under the temperature height, thereby this fuel can condensation and be back to liquid state.Under any circumstance, for the fuel of guaranteeing to be delivered to cylinder is vaporized fuel, this fuel promptly changes gaseous state in the time of must guaranteeing self-injection device nozzle 41 ejection fuel, keeps this gaseous state simultaneously after spraying, and is distributed in the air-flow that flows to cylinder until this steam.In case steam has been distributed in this air-flow, the possibility of this vapour condensation is just minimum so, because this steam is distributed in the air-flow, and the mixture flow of this steam and other gas is short to the time compole of cylinder 20 required costs.Therefore, when heating this end regions 43 and just can guarantee burner oil, the fuel that is sprayed promptly changes gaseous state into, and this vaporized fuel mixes with high temperature air and waste gas then, is distributed in the air-flow until fuel fume thereby keep this gaseous state.This point is different fully with prior art, and what spray in the prior art is liquid fuel, after ejection fuel leaves sparger one segment distance, attempts to change this liquid fuel into gaseous state then again.

Motor will cause the pressure in the gas handling system to change by idle running throttle to the different throttle position of full throttle, thereby change the volume of the high-temperature gas of being imported, thereby the ratio between heated gas and the standard atmosphere carried also changes.Thus, can correspondingly change the proportions of ingredients of this air-fuel mixture.For example, with the high loading of motor and compare at a high speed, under situation, can use poorer fuel mixture than jogging speed and less loading coefficient.According to the preferred embodiments of the present invention, as present understanding, control this fuel-air mixture usually, make Lambda be higher than 1.00 far away, this numerical value is by the industrial optimality criterion identification at the common engine device.Under and the situation that loading coefficient is less slow at engine speed, because throttle is beaten lessly, less from the standard source inhaled air, diluted ground of heated gas degree is lower, therefore can be with the mixed gas delivery of higher temperature to cylinder.Because standard source is worked under lower room temperature environment, and this initial temperature that sucks air of introducing in the gas handling system is lower, and the travel rate that therefore sucks air is fast more, the temperature of mixed gas is just low more again.Because the negative effect of burning and exhaust gas temperature is compensated by the burning and the exhaust gas recirculation of high temperature suction air, thereby the poorer fuel mixture that can burn.The heated gas mixture is introduced the firing chamber, and itself just can reduce the temperature of firing chamber.Comprise inert gas in this point and the waste gas and combine and formed a kind of like this system, the motor that this system can control common poor oil firing produces higher chamber temperature.Because it is low to suck the density of air, thereby the temperature that sucks air only can produce lower resistance to compression pression to relative piston, thereby help to keep and improve this motor under less fuel than low speed torque (speed torque) and power, measured Lambda value can increase to about 1.25.

Along with the increase of load and engine speed, throttle is beaten greatlyyer, allows more air to enter this gas handling system, and heated gas changes with ratio between the normal room temperature air that is sucked, thereby the temperature of importing gas also changes.The temperature of total input gas reduces, thereby has increased and make output power maximize needed density.This has also increased the resistance to compression pression of motor self, increased the energy that is absorbed in the power operation process, thereby require in the fuel-air mixture fuel and air more balanced, with compensation load, speed, resistance, allow to use poorer fuel mixture but still require this motor to compare with the motor of operation in a conventional manner.The intake temperature of heat will reduce chamber temperature, and this helps to offset the reaction of poor oil firing.

Another effect of waste gas circulation is the temperature that helps to reduce the firing chamber, and allows the poorer fuel of burning, and when reducing fuel in conventional engine system, temperature will raise sharp.Waste gas circulation also helps to reduce NO _X, NO _XBe usually another negative consequence relevant with combustion lean, under home, the motor of combustion lean will generate the nitrous oxide that significantly increases.Low air density can reduce resistance to compression pression, this just allow at the input total amount of fuel less or in particular cycle under the less situation of the fuel of importing, motor can be kept its power and torque.The preferred embodiment of the present invention is by at the end regions heating fuel of sparger, makes this fuel 100% gasification promptly after the fuel ejection.This can keep the integrity of parts for a long time, and makes and can install when making original device or assemble easyly.Discharged by high temperature under the pressure of high-temperature fuel in sparger, pressure reduces when spraying owing to sparger, and pressure once reducing liquid thermal expansion takes place, so high-temperature fuel can promptly form steam.This steam is through more short-range air inlet zone, and when this steam is advanced in high-temp waste gas and/or high-temp combustion air, keep this steam and be in gaseous state, final this steam mixes mutually with other standard input air stream again, in case this steam is distributed in this standard null air-flow further, just formed a kind of combination supply gas, the temperature of this combination supply gas can change according to the speed of load and motor.In any stage after the mixture that dilutes this high-temperature gas and fuel fume can prevent to form steam at spraying and then and via flashing effect, the condensation again of this mixture.As Lambda be provided with prove, reducing the employed fuel of motor both can realize by the fuel that minimizing is used to form steam, can realize in order to obtain the needed liquid fuel of suitable fuel-air mixture by reducing after steam forms again, add owing in the preferred embodiment of the present invention, introduced waste gas and high temperature input air, thereby allow motor to carry out poor oil firing.

Replace the mixture of fuel fume and liquid fuel also can improve the power and the efficient of this ignited fuel and burning with fuel fume.Liquid fuel can not be lighted, and it is wasted and discharges as pollutant, and engine efficiency is not played any positive effect.

It is many more to be used to the vapor volume lighted in the cylinder, and the compression ratio that is obtained is just big more, and this compression ratio is by dwindling combustion chamber volume or in other words obtaining by ignition mixture is compressed in the given space.Adopt bigger force and work rate to light this steam mixture, just premature ignition can not take place or repeatedly detonate and flame front phenomenons such as (flame front), in the conventional high-tension compression ratio engine that adopts gasoline, all these phenomenons can appear when this engine knock or detonation.

In case under this high compression ratio, use fuel, the rate of combustion of this fuel, exactly, all the time of the required consumption of mixture perfect combustion will reduce velocity of combustion in the firing chamber in other words, this means that more ignition mixture will be at the most effective stage burning of compression stroke, this ignition mixture will burn more fully, wherein, in the most effective stage of compression stroke, the suppressed range maximum.After whole mixture burns, discharge gas componant and also change like this, in discharging gas, carbon dioxide is more, and hydrocarbon and carbon monoxide are less, and discharging gas componant is a kind of conventional method that is used to assess firing chamber internal combustion efficient.

Rate of burning accelerates to mean that the time in order to guarantee the required cost of the relatively large steam of burning in each cyclic process shortens.

Conventional engines is vacateed the time enough fuel as much as possible that burns before the lift stroke in other words in order to begin its downward stroke at piston, rely on the piston arrives upper dead center (in each particular cycle process or in each rotation process, when piston is positioned at the top of cylinder) just light this fuel air mixture before, wherein, before lift stroke, just detonate.

This existing mode attempts to guarantee to burn more fully, this mode is not have productive value on principle, because when piston still compresses with regard to the starting ignition process, thereby make piston be subjected to two relative power, it at first is initiation power, this is tried hard to recommend on the trend and to move or compress mobile piston, until this piston through upper dead center and begin its downward lifting stroke, thereby make detonate (detonation) do not have productive value.

For this firing mode, in fact when also not arriving optimal compression, just lighted in mixture this mixture.This means to have a period of delay (retarded timing), under preferable pressure in the firing chamber and the preferable burner quality, can realize lower chamber temperature this period of delay.This can control combustion temperature further, and correspondingly controls fuel-air ratio, realizing poorer burning, and can not be subjected to the negative effect of poor oil firing's temperature.

Steam is introduced the firing chamber for the overall performance of motor, have on the other hand effect.In conventional engines, when spraying a large amount of fuel with restriction liquid gas shift rate, because time restriction, and the air of being imported will can not with liquid transition be steam or gas again that on satisfied and closed, excess liquid fuel just produces a negative effect to ignition mixture like this, extinguish the spark that produces by spark plug, and stop lighting of suitable or any kind fully, if any igniting perhaps arranged, because a large amount of liquid fuel can be with flame extinction, thereby burning will be very faint and incomplete.

But, if adopt principle of the present invention, mixture is introduced the firing chamber, compression is gas subsequently, so just above-mentioned reaction can not take place.

Can recognize that in above argumentation and Fig. 2 the present invention does not heat the main body 40a of this sparger 40, thereby guarantee can not damage the functional unit in this main body 40a, perhaps can this main body of fusion 40a.In addition,, do not need to carry quite hot fuel to give this sparger 40, if do the parts in this main body of meeting fusion 40a like this or damage this sparger 40 from fuel channel 42 as if the fuel in the end regions 43 being heated to needed temperature.Thus, main body 40a can be maintained normal temperature, and end regions 43 is heated to needed temperature to improve the temperature of fuel in this end regions 43, like this after the nozzle 41 of this sparger 40 sprays fuel certainly, flash distillation promptly of this fuel and gasification, wherein, the functional unit of sparger is arranged in the main body 40a, and fuel is introduced this main body 40a.

Therefore, in Fig. 1 and 2 illustrated embodiment, behind nozzle 41 ejection fuel, this fuel promptly generates fuel fume, subsequently this fuel fume again with this hole 38 of input in air mix mutually with waste gas, and enter steam pipe 78.When this mixed gas manages 78 through this, utilize cyclone separator 79 to make this air, waste gas and fuel form the whirlpool shape, fully contact with the mixture of high temperature air and waste gas and mix to guarantee this fuel.Like this can be in ejection fuel be marched to process near the other end of this pipe 78 of suction valve 34 by an end of this pipe 78, keep spray fuel and be in gaseous state (being droplet-like usually).According to traditional approach, provide extra air via inlet manifold 32 and gas-entered passageway 30, to support the burning of fuel in the cylinder 20.Therefore, under idling speed, only there are air fuel and waste gas to enter in the cylinder 20 via pipe 78.But in case depress accelerator and open fly valve 50, air just can enter inlet manifold 32 and gas-entered passageway 30 via throttle valve body 48, thereby is supplied to this cylinder 20.

Except by the above mode (via block 55) supply idling air, also can obtain the idling air from the downstream of this fly valve 50.In this set, between this throttle valve body 48 and inlet manifold 32, provide a block (not shown).This block has the hole that is connected with the fly valve downstream, carries the idling air via this hole usually, and this Kong Yuguan 60 connects.

Because fuel flows to cylinder via pipe 78, therefore and this pipe 78 is compared with gas-entered passageway 30, and cross-section area and volume are all less, marches in the process of the other end of this pipe 78 at an end of managing 78 certainly, can keep this fuel and be in heating status, and keep the temperature of this fuel.

In embodiment illustrated in fig. 2, this pipe 78 extends to suction valve 34 by hole 38 always.But in other embodiments, this pipe 78 also can lead to this gas-entered passageway 30 along the length of gas-entered passageway 30 extend through stretch only, and separated by a distance with this valve 34.In another embodiment, can fully phase out this pipe 78.In high-performance or rev-happy engine, race engine etc. for example, this pipe 78 preferably has length shown in Figure 2.Under the situation of common tram car, this pipe is 78 preferably shorter, can be from this hole 38 only 1/10th of extend through gas-entered passageway 30 length.Therefore, in this device, the mixture of fuel fume, heated air and waste gas enters pipe 78, advances than short distance along this pipe 78, flow out this pipe 78 then and enter in the gas-entered passageway 30, thereby mix mutually with the suction air that sucks in this gas-entered passageway 30 via inlet manifold 32.

Preferably, the heat-exchange tube 66 in the pipe 62 has a kind of like this diameter and length, makes its heat exchange area equal about 50 square inches of every liter of engine capacity, and the diameter of this pipe 66 has been represented the minimum flow area under the vehicle idling system.The size of pipe 62 should be set like this, makes it can keep the normal exhaust gas flow characteristic of exhaust header 12.Available a kind of insulating material covers this pipe 62, with strengthen heat-retaining and with the heat exchange of this pipe 66.

Waste gas and idling air mixed mutually have two effects.The first, at first be the idling air that pipe 60 is flow through in heating, this idling air is colder and mobile rapid, so that as much as possible little by pipe 62 and pipe 66 heat exchangers of forming; The second, in waste gas entrained air stream, to reduce nitric oxide production percentage composition in the effulent.This pipe 66 preferably has wavy or stepped profile, so that the mixed gas of this pipe 66 of flowing through forms turbulent flow, thereby mixes this idling air and waste gas fully.Compare with the traditional location of sparger 40, with this sparger 40 be provided with apart from the hole 38 inner terminal more by the about 1mm to 4mm in back, but this distance should be able to make nozzle 41 and end regions 43 managed from landing 74 and the introducing hot gas in hole 75 surround.The expansion end 81 of this pipe 78 not only is convenient to assemble the mixture of gas and fuel, can prevent that also this pipe 78 from falling in the motor, thereby is convenient to this pipe 78 of location in gas-entered passageway 30.Preferably cyclone separator 79 drive fits (tight fit) are managed in 78 at this, thereby utilize friction that this cyclone separator 79 is remained on its appropriate location, and can not fall in the motor 10.As mentioned above, the cross-section area of this steam pipe 78 is less than the cross-section area of gas-entered passageway 30 and suction valve 34, and the speed of air mixture that flows through this pipe 78 is greater than the air velocity that flows through gas-entered passageway 30.This just makes more substantial heated gas through fuel fume, forms gaseous mixture with this fuel fume and draws from this pipe 78, thereby can increase the total heat transmission quantity that gives this steam, guarantees that this fuel is in gaseous state.Second vacuum system also is provided, and has allowed idler circuit when giving motor, to change bigger circle (play a greaterroll), otherwise when throttle was opened, it was with override (overridden) air supply.

This effect has changed the degree of vacuum that is supplied to sensor and Fuel Control System, and degree of vacuum is maintained a higher level, and this prevents to spray the fuel of original amount conversely again, and reduces quantity of fuel according to present embodiment.The computer of vehicle is the different manipulation population of parameter of perception under the signal that changes, thereby reduces needed quantity of fuel.Be the esthesis (perceptions) that changes sensor further, second vacuum system in the present embodiment can be supplied another kind of vacuum source, adopts an addition of vacuum line to add to original device by making each required sensor.

As previously mentioned, heat the end regions 43 of this main body 40a below, electronic unit is contained in this main body 40a, is normal temperature owing to be supplied to the fuel of sparger, thereby to be contained in electronic unit zone in this main body 40a be cold and in working specification.

Because the temperature of fuel is higher when spraying, thereby the fuel that is heated can gasify at a terrific speed.Combine with further feature, this point means that for the gasification that obtains 100% fuel or heated air do not need to be positioned near the outlet temperature of fuel before igniting.

For sucking gas and fuel, mean temperature is increased to 80 ℃ to 120 ℃, add that this temperature does not have high outlet temperature to fuel, combine with speed, mix waste gas and time that fuel is remained in the steam pipe again, this fuel fume preparing to light in the firing chamber and waste gas/suction gaseous mixture can reduce pollutant, carbon and raises the efficiency.

Adopt minimum temperature to keep the volumetric efficiency of introducing the air total amount.

Under identical performance, the fuel of complete vapor state is flowed to cylinder 20, needed fuel reduces, and can improve economic benefit thus.In conventional engines, utilize the control unit of engine (not shown) of motor 10 to control by fuel injector 40 these in-engine quantity of fuel of introducing.This element can be controlled this sparger 40 according to various operating parameters, and as the above mentioned, this operating parameter comprises the temperature of carrying air, engine speed, vacuum rate etc.Because present embodiment flows to cylinder 20 with fuel fume rather than fuel droplet, thereby needed quantity of fuel is that the determined quantity of specific operation condition is lacked than this unit.Therefore, if the preferred embodiment of the present invention adopts this conventional elements, just should revise this unit, so that sparger 40 sprays the fuel of less amount, because in this embodiment of the present invention, in fact needed fuel quantity is that the determined amount of specific operation condition is lacked than this unit.This can realize by some parameter that manually or automatically changes in this unit of input, so that this sparger 40 sprays more a spot of fuel.Optionally,, so also can revise the function software of this unit,, thereby obtain needed performance characteristic so that sparger 40 is carried the desired a small amount of fuel of the embodiment of the invention if the system that is provided is an original device.

Fig. 5 represents the second embodiment of the present invention, and wherein, reference number is as hereinbefore represented identical parts.

In this embodiment of the present invention, idling air supply pipe 60 is connected with heat exchanger 90 on being positioned at exhaust header 12.This heat exchanger 90 can comprise a pipe that is positioned on the exhaust header 12, and this pipe is S shape structure, and is used to heat this pipe from the heat of exhaust header 12.Pipe 60 can run through this pipe, and heat exchange is just taken place like this, thereby heating is through the idling air of this pipe 60.

One spacer block 92 is connected with top 16, and this spacer block 92 has hole 94, and this hole 94 is facing to exhaust passage 14 and exhaust header 12, to allow to discharge the waste gas in the cylinder 20.This spacer block 92 also has and pierces in this spacer block and vertically extending hole 96.For each cylinder 20 provides such hole 96, and this hole 96 is facing to the exhaust passage 14 of motor 10.One spill (hollow) distribution piping 98 is positioned at the over top of this spacer block 92, and the inside 100 of this pipe 98 is communicated with each hole 96.Idling air supply pipe 60 comprises that automatic heat-exchanger 90 extends to a part of 60a of this distribution piping 98.Sparger 40 is installed on the top of this distribution piping 98 and has end 43 and nozzle 41, and this end 43 and nozzle 41 stretch in the concave inside of distribution piping 98.Hot air from pipe 60a enters this distribution piping 98, and round and heat the end 43 and the nozzle 41 of this sparger 40, heat this end 43 and nozzle 41 and just make fuel when leaving this nozzle 41, gasify immediately, with above identical with reference to the described mode of Fig. 1 and 2.Therefore, when spraying, just generate fuel fume immediately, and in the process that this fuel fume and hot gas are advanced along hole 96, keep this fuel fume and be in gaseous state.

In this embodiment, sparger 40 is positioned at the exhaust side of motor, and in Fig. 1 and 2 illustrated embodiment sparger is arranged on the air inlet side and compares, and the ambient temperature of exhaust side is than air inlet side height.The hot idling air that utilizes process to manage 60a is finished the heating to this end regions 43.In this embodiment, can make spacer block 92 and pipe 98 thermal insulation, perhaps utilize a kind of non heat conductivity material to form this spacer block 92, end regions 43 just can not be overheated like this, otherwise will cause the fuel gasification in this end regions 43, this will make that this sparger can't proper functioning.As previously mentioned, heated end portion zone 43 is to rise to certain temperature with the fuel temperature in this end regions 43, under this temperature, fuel still maintains liquid state owing to the pressure in this end regions 43, in case but this fuel is from end regions 43 ejections, just can promptly gasify, thereby guarantee that this sparger 40 can proper functioning, fuel gasifies rapidly when leaving injector nozzle 41 simultaneously.

A fuel-air delivery pipe 104 is connected with hole 96, and this delivery pipe 104 is through the duct 106 in exhaust passage 14 and the cylinder head 16.This pipe 104 passes this duct 106 always, and enters in the gas-entered passageway 30 of motor 10.Should manage 104 and enclose in this duct 106, waste gas just can not manage 104, enter this gas-entered passageway 30 through duct 106 round this like this.

The fuel fume that generates when these sparger 40 ejections mixes mutually with the hot air from pipe 60a, and via each hole 96 every pipe 104 that this mixed gas delivery is extremely corresponding.This fuel air mixture process is positioned at the part of the pipe 104 of exhaust passage 14, like this, can carry out heat exchange by the high-temp waste gas with these exhaust passage 14 discharges and heat this fuel air mixture.This helps to flow in the process of outlet end 109 along pipe 104 at this fuel, keeps the gaseous state of this fuel, and wherein, this outlet end 109 is positioned at gas-entered passageway 30.

This pipe 104 has an inlet hole 108, and this inlet hole 108 is positioned on pipe 104 the part, and this part is arranged in from the exhaust passage 14 exhaust flows that flow to exhaust header 12.As shown in Figure 5, this hole 108 is arranged in the hole 94 of spacer block 92.But this hole also can be positioned at the other parts of pipe 104, as long as waste gas can enter this hole 108, thereby mixes mutually with fuel and air, to heat the fuel air mixture in this pipe 104 further.Therefore, also can when this pipe 104 flow to outlet end 109, make this fuel gasification at fuel, and the fuel of vapor state is flowed to gas-entered passageway 30 as early stage embodiment.

Embodiment as described above, in 80 ℃ to 120 ℃ scope, motor maximum temperature under idling speed can reach 150 ℃ through the temperature of the air and waste gas of pipe 104.This embodiment has the identical substantially advantage with aforementioned embodiment, and a spot of hot idling air and waste gas mix mutually with fuel, and when guaranteeing via gas-entered passageway 30 this fuel to be flowed to cylinder 20, this fuel is in the state of being gasified totally.When fly valve 50 (not expression among Fig. 5) when opening, can be provided for supporting the required additional air of cylinder 20 fuel combustion via this gas-entered passageway 30.

Fig. 6 has represented another kind of embodiment of the present invention, and it is identical with cardinal principle embodiment illustrated in fig. 5, and just this pipe 60 is directly connected on the distribution piping 98, and does not pass through any primary heat exchanger, and example is heat exchanger 90 described with reference to Figure 5.But this embodiment and another important difference embodiment illustrated in fig. 5 are, have heat transmission between distribution piping 98 and the spacer block 92, and this spacer block 92 further again and have heat transmission between the exhaust header of motor and the exhaust passage.Therefore, can be via this spacer block 92 with heat transferred distribution piping 98, owing to be in contact with one another between the end regions 43 of sparger 40 and this distribution piping 98, thereby can heat this end regions 43.Because sparger 40, pipe 98 and spacer block 92 all are positioned at the exhaust side of motor, this exhaust side is the highest part of temperature in the motor, although thereby this end regions 43 is relative less with the area of contact between the distribution piping 98, the heat transmission of this end regions 43 is remained very remarkable.Directly the air 60 from the idle running spiral winding not only provides the idling that is used to burn air, has also slightly reduced the temperature of end regions 43, can be not overheated to guarantee this end regions 43.When this idling air enters distribution piping 98 and closely contacts with end regions 43, utilize the heat transmission between this distribution piping 98 and the end regions 43 to heat this idling air, thereby this end regions 43 is maintained on the needed temperature, so that the fuel in this end regions 43 is maintained such temperature, under this temperature, fuel still is in liquid state, but can guarantee that this fuel promptly becomes gaseous state in the time of nozzle 41 ejection fuel.In addition, mode of operation embodiment illustrated in fig. 6 and embodiment illustrated in fig. 5 identical.

As illustrated in Figures 5 and 6, preferably will manage 104 end 109 and cut into several angle, increasing the vacuum capacity in this pipe 104, this vacuum capacity is to open suction valve 34 and produce by suction with in the air suction cylinder 20 time via gas-entered passageway 30.

Fig. 7 has represented another embodiment of the present invention, and employing reference number as hereinbefore is to represent identical parts again.

In this embodiment of the present invention, to compare with the position shown in Figure 2 of first embodiment of the invention, sparger 40 is positioned on the traditional location in hole 38.

In this embodiment of the present invention, the end regions 43 of sparger 40 is positioned at a ring-shaped article 260, illustrates in greater detail this ring-shaped article 260 hereinafter with reference to Figure 17 to 22.This ring-shaped article 260 has a central hole 262, and end regions 43 is positioned at this central hole 262 closely, to contact the peripheral wall of this central hole 262.This ring-shaped article 260 contacts with inlet manifold 32 and also carries out heat transmission with it, like this, the heats that produce in top 16 and the cylinder wall 22 just pass to ring-shaped article 260 via this inlet manifold 32, and then the end regions 43 that passes to sparger 40 is to heat this end regions 43.This has just promoted the temperature of this end regions 43, thus heating fuel.Therefore, when from nozzle 41 ejection fuel, foregoing flashing effect just taking place, makes fuel promptly gasify.

According to this embodiment of the present invention, be formed with a duct 106 in the top 16, this duct 106 connects exhaust passage 14 and gas-entered passageway 30.An air fuel delivery pipe 120 is positioned at gas-entered passageway 30.This pipe 120 has that waste gas enters arm 122 and air enters arm 124, and this waste gas enters arm 122 and stretches in the duct 106 and enclosed in this duct 106, and this air enters arm 124 and stretches into inlet manifold 32 and open wide to this inlet manifold 32.In such an embodiment, carry the idling air via the idle running spiral winding, and carry additional air via inlet manifold 32 and gas-entered passageway 30 according to common traditional approach.

The transfer passage of air and fuel has the inlet end 128 facing to injector nozzle 41, like this from the fuel of this sparger 40 ejections just through this inlet end 128, and flow near the outlet side 130 that is positioned at the valve 34 along pipe 120.

Waste gas can flow in the arm 122 via duct 106 from exhaust passage 14.A wavy heat-exchange tube 132 stretches in the arm 124 from this arm 122, and ends near the opening end 136 of this arm 124.Should manage 132 and be enclosed in the arm 122, waste gas just can not be walked around this pipe 132 and directly enter in the pipe 120 like this.Flow through this pipe 132 of waste heating of this pipe 132, thus with the flow through fuel of this pipe 120 and carry out heat exchange of self-injection device 40 from the air that arm 124 flow to end 130, be in gaseous state to keep this fuel, with identical with reference to the previous described mode of embodiment.

Inhaled air can enter in the pipe 120 then through the opening end 136 of arm 124, and this air just mixes mutually with the fuel that sparger 40 is carried like this.By carrying out the mixture that this air and fuel are heated in heat exchange with this pipe 132.Waste gas from duct 106 and flowing pipe 132 is discharged (clearly being illustrated among Fig. 8) from the outlet end 140 of this pipe 132.Near the deflection plate 144 that has the dome-shaped of being generally this outlet end 140, this deflection plate 144 make from this manage the waste gas of discharging 132 ends 140 as shown by arrow A direction, return partially along arm 124 and away from opening end 136.Simultaneously, also via the air in these opening end 136 suction inlet manifold 32, this air just mixes mutually with waste gas and the fuel carried by sparger 40 like this, equally also helps at fuel to keep this fuel and be in gaseous state when the end 128 of managing 120 flow to the end 130 of this pipe 120.Therefore, embodiment can flow to the fuel of vapor state cylinder 20 as described above.

Embodiment as described above, in this embodiment, preferably remove the case member of the end 43 that is used to wrap up this sparger 40, to heat this end 43 by the heat transmission between the heat transmission between this end 43 and the ring-shaped article 260 and this ring-shaped article 260 and the inlet manifold 32.

In Fig. 1 to 8 illustrated embodiment, shown fuel-air delivery pipe 78,104 and 120 is a single pipe in the gas-entered passageway that is installed in motor.But, except single pipe was provided, aforementioned tube also can be formed in the foundry goods of cylinder head, in other words only in the foundry goods internal drilling of this cylinder head and formed, they just form one with the cylinder head of original manufacturing like this, and as the part of this cylinder head.If necessary, other each pipe also can be integrally formed with motor, rather than independent pipe is provided.Because these pipes only occupy quite little space, and be connected with the existing parts of motor, thereby can be easily by disclosed each pipe in the previous embodiment is installed, and native system is applied to original manufacturing equipment (promptly, make good motor), as being installed in conventional delivery systems on the available engine.

Fig. 9 and Figure 10 have represented another embodiment of the present invention.In such an embodiment, in order to have a plurality of holes 152 in the block wall 150 that defines cylinder 20.Sleeve 154 inserts in this each hole 152.All have the hole 154 that a diameter reduces in each hole 152, this hole 154 is interconnected hole 152 and block wall 150, and sleeve 154 has the pole socket (stem) 156 that stretches in this hole 154.Sparger 40 is positioned at this sleeve 154, and its nozzle 41 stretches in this pole socket 156, so just can inject fuel directly in the cylinder 20.

Suction valve 34 and outlet valve 18 are provided, are respectively applied for control and introduce air in this cylinder 20 and be used for control combustion gas in this cylinder 20.Piston 24 is according to traditional approach to-and-fro motion in this cylinder 20.

Same way as described in embodiment is formerly removed the case member of the end regions 43 that is wrapped in this sparger 40, so that this end regions 43 contacts with cylinder wall 150 via sleeve 154.Like this, just can between this wall 150 and end regions 43, carry out heat exchange,, realize the same effect described in the previous embodiment to heat the fuel in this end regions 43.That is to say that in case spray fuel in this sparger 40 certainly, this fuel just flash distillation promptly is gaseous state.

In this embodiment of the present invention, postponement sprays the time of fuel in this sparger 40, with when piston 24 rises in cylinder 20, fuel in the sparger 40 can be directly injected on the top of this piston 24, utilize before compression lights this fuel fume utilizing under spark plug (not shown) or the situation at diesel engine like this, the fuel that is deposited on this piston 24 will help to make any not fuel gasification of gasification.

Therefore, if this sparger sprays the fuel of any liquid state, in fact as mentioned above, the fuel that is ejected on these piston 24 tops will gasify before lighting this fuel.

In a preferred embodiment of the invention, the hole 152 in this sleeve 154 is outwards tapered slightly, and its outer end 170 is just less times greater than inner 172 like this.This just can insert the sparger 40 of different size in this sleeve 154, and guarantees that nozzle 41 is positioned at pole socket 154, thereby fuel directly can be sent in the cylinder 20, also can heat the end regions of this sparger and the fuel in this end regions simultaneously.

Fuel pipe 180 is used for fuel is flowed to this sparger 40, and this fuel pipe 180 is through having the heat exchanger 190 of inlet 192 and outlet 194.Waste gas enters and discharges from this outlet 194 from this inlet 192, is used to heat the fuel pipe 180 in this heat exchanger 190.Optionally, can enter the mouth from this from the oils of the hot water of cooling system or motor 192 enters and discharges from this outlet 194, carries out heat exchange with the fuel with this fuel pipe 180 of flowing through.In another kind of embodiment, can in this heat exchanger 190, utilize this fuel pipe 180 of electric heating.

The fuel of this fuel pipe 180 of flowing through heated just finished preheating of fuel, when this fuel was flowed to sparger 40, this fuel was warm like this, thereby when with sedimentation of fuel to in-engine hot piston 24 time, this fuel is easier to gasification.If wall 150 can not be with enough heat transferred end regions 43, with can the flash distillation or the required temperature that gasifies rapidly to this fuel when the self-injection device 40 ejection fuel, utilize heat exchanger 190 to come pre-heating fuel just quite useful so with the temperature increase of this end regions 43.Reason is that this wall 150 may can't extremely can produce the temperature increase of fuel in the end regions 43 temperature of flashing effect owing to the cooling liquid that circulates makes its temperature low excessively in motor.Pre-heating fuel can slightly improve the temperature of this fuel before this fuel enters sparger 40 in heat exchanger 190, the heat that is transmitted by this wall 150 just is enough to produce flashing effect like this, and can not make the fuel superheater of the sparger 40 of flowing through, this will damage this sparger 40.

Preferably remove all sealed members and the case member of sparger 40, and this sparger 40 is enclosed in the sleeve 154 to replace this case member.Should be appreciated that,, will no longer include the pressure effect and give this sparger 40 that wherein, this compression stroke is used for fuel and gas in the compression cylinder 20 when piston rises and after via hole 152 in compression stroke.As shown in Figure 9, this hole 152 and pole socket 156 are downward-sloping, to prevent that fuel oil aggregation is in this pole socket 156.

As previously mentioned, handle sparger 40, when fuel is ejected into the top of this piston, utilize these piston 24 end faces to have higher operating temperature fuel is delivered to the top of piston 24, with this piston-top surface as a kind of vaporizer this fuel that gasifies.Preferably, heat exchanger 190 these fuel of heating, with before this fuel is delivered to sparger 40, the temperature of this fuel reaches about 50 ℃ to 80 ℃.

Figure 11 has represented another kind of embodiment of the present invention, and wherein, reference number is as hereinbefore represented identical parts.

As the embodiment shown in Fig. 1 and 2, idle running spiral winding 52 is to idling air duct 60 supply idling air.But in this embodiment, this idle tube 60 has a T shape part 200, so both air can have been introduced arm 60 ' in, air can be introduced arm 60 again " in.This arm 60 ' be connected with heat exchanger 61, Figure 11 a has represented a kind of improved form of this heat exchanger 61.As previous embodiment, tube air heater 70 receives hot idling air and some waste gas from this heat exchanger 61, and gives T shape part 201 with this mixed gas delivery.This T shape part 201 is connected with distribution piping 72, also receives from arm 60 " the idling air." solenoid valve 202 is provided, opens and close this solenoid valve 202 for this arm 60 based on temperature transducer 203 detected temperature in distribution piping 72.This sensor 203 can only flow to solenoid valve 202 with signal via lead 204 when its detected temperature surpasses a certain predetermined value, perhaps this sensor 203 can be connected with management system or computer, and this management system or computer provide signal to drive this solenoid valve to solenoid valve 202 conversely.When this solenoid valve 202 started, the idling air can " flow to T shape part 201, enter distribution piping 72 then via arm 60.When this solenoid valve 202 cut out, the idling air just can not " flow to T shape part 201 and distribution piping 72 via arm 60.This distribution piping 72 is communicated with previous described hole 38, like this, from the high-temp waste gas of tube air heater 70 and the AIR MIXTURES end regions 43 of sparger 40 of will flowing through, thereby before the nozzle 41 ejection fuel of this sparger 40, heat the fuel in this end regions 43.Therefore, as previously mentioned, when fuel left nozzle 41, this fuel promptly became steam, and like this, this fuel just 38 is delivered to cylinder 20 from the hole in the air-flow of high temperature air and waste gas, and mixed mutually with suction air in sucking inlet manifold 32.

In the course of normal operation of motor, this waste gas in tube air heater 70 enters distribution piping 72 and the temperature of air mixture may be higher than needed in order to end regions 43 is heated to the temperature of set point of temperature far away.According to the temperature on the same day and the operating conditions of motor, the temperature of this high temperature air and exhaust-gas mixture may be up to 220-240 ℃.After this high-temperature gas entered distribution piping 72, the temperature of this gas can be reduced to 160-175 ℃, but this temperature still is higher than needed being used for end regions 43 was heated to set point of temperature so that the temperature of fuel flash distillation.This higher temperature will make the fuel gasification in this end regions 43, thereby cause sparger 40 to break down or error in operation.If the temperature that sensor 403 detects in the distribution piping 72 is higher than certain predetermined value, for example 150 ℃, with regard to opens solenoid valve 202, make low temperature idling air and " enter this distribution piping 72, thereby the temperature of air mixture in this distribution piping 72 is dropped to 150 ° of C via arm 60.This temperature is enough to temperature increase with fuel in the end regions 43 to a kind of like this temperature, and under this temperature, fuel still is in liquid state, in case but self-injection device 40 these fuel of ejection, this fuel is gaseous state with flash distillation.If temperature drops to below 150 ℃, just close this solenoid valve 202, to stop Cryogenic air to continue via arm 60 " enter distribution piping 72, thereby pass through optionally this solenoid valve 202 of opening and closing, can be with the temperature maintenance in this distribution piping 72 at about 150 ℃.

Opens solenoid valve 202 is to open arm 60 " operation have double action; effect be reduce flow into arm 60 ' air quantity; thereby reduce the received hot air of tube air heater 70; another effect is via arm 60 " directly to be supplied to distribution piping 72 with Cryogenic air, thereby to play cooling action.

In this embodiment, also provide second flue gas leading 70 that is connected with vehicle exhaust systems '.This pipe 70 ' can be connected with the suitable part of waste gas system simply, thereby make waste gas can enter this pipe 70 '.Utilize this pipe 70 of second solenoid valve 202 ' control ', via the signal of lead 204 ' provide drive this solenoid valve 202 '.When for pick up speed or increase the load pedal of stepping on the throttle, thus when causing pressure in the vacuum system of engine to descend, just started this solenoid valve 202 '.Open this second valve 202, waste gas just can manage 70 certainly ' enters in the T shape part 201, thus the air of this waste gas in pipe 70 can be offered hole 38.Under high loading or high-speed requirement, introduce extra waste gas and will help to reduce NO in institute's combustion gas further _xGas.

Can utilize a pressure switch handle solenoid valve 202 ', when pressure descends, this pressure switch just via lead 204 ' with electric current export to this solenoid valve 202 ', with start this solenoid valve 202 '.Optionally, also can utilize control unit of engine start this valve 202 '.Unloaded or low carrying in the process, make this second valve 202 ' be in closed condition, usually because under these operational conditions, do not need extra waste gas.

Figure 11 a, 11b and 11c represent a kind of version with reference to the described heat exchanger 61 of Fig. 1.In such an embodiment, heat exchanger 61 is relatively short and comprise a pipe 205, and pipe 66 is wound in this pipe 205, and should pipe 66 with manage 60 ' end 65a be connected.As previous embodiment, this is managed 66 automatic heat-exchangers and draws, and its end 65b is connected with pipe 70.As previously mentioned, this heat exchanger 61 has flange 204, this flange 204 can be bolted on the waste pipe.End 205 will be soldered on exhaust header 12 (not shown)s of motor.The heat exchanger that this set provided is shorter than previous embodiment, but this heat exchanger is but carried out together with reference to the described embodiment's identical functions of Fig. 1 and 2.As described in reference Fig. 1 and 2, pipe 66 comprises a hole 67, and waste gas can enter in this pipe 66 via this hole 67, and so just the mixed gas with air and waste gas offers tube air heater 70, and flows to distribution piping 72.

Figure 12 represents a kind of distortion embodiment illustrated in fig. 11.In Figure 12, idling air duct 60 is connected with T shape part 201, with supply idling air.As the described mode of reference Figure 11, solenoid valve 202 is according to temperature transducer 203 detected temperature, and control idling air is mobile via this pipe 60.The waste gas that this T shape part 201 receives from tube air heater 70, from not comprising any idling air in the gas of this tube air heater 70, and this waste gas flowed to the end 43 of distribution piping 72 and sparger 40, thereby this end 43 is heated for foregoing purpose.Figure 12 A represents that this pipe 70 is connected with a taper 210, and this taper 210 is between flange 211 and flange 212.Utilize bolt 213 to connect these

flanges

211 and 212, so that this taper is clipped in and is enclosed between

flange

211 and 212, thereby exhaust header 12 is communicated with flue gas leading 61.

As Figure 12 A, 12B and 12C clear expression, taper 210 receives this pipe 70, this pipe 70 stretches in the peripheral wall 215 of taper 210, extends through the bottom opening 216 of this taper 210 then downwards, to stretch in the outlet pipe 61.Thus, when when this pipe 70 applies suction force, just the high-temp waste gas suction should be managed in 70, and flow to T shape part 201.Therefore, in this embodiment of the present invention, only carry waste gas, end regions 43 is heated for foregoing purpose along tube air heater 70.When the temperature in the distribution piping 72 is increased to when being higher than above mentioned temperature, just start solenoid valve 202, the idling air just can enter in this distribution piping 72 via idling air duct 60 like this, thus cool stream to the gas of this end regions, Figure 11 is described as reference.

Embodiment illustrated in fig. 12 also comprise another one solenoid valve 202 ' and other pipe 70 ', both functions are with identical with reference to the function of the described corresponding part of Figure 11.In such an embodiment, this pipe 70 ' only supply waste gas, near this pipe 70 ' can pipe 70 and position that vent systems is connected, be connected with this pipe 70, as reference Figure 12 B to 12D in greater detail, thereby in the process of change speed or change load, provide extra exhaust flow.

Will be appreciated that and be, in this embodiment, because the idling air does not mix mutually with the waste gas of supplying via tube air heater 70, thereby a traditional idling air passageways is provided for the air inlet collector, this passage is used for supplying the idling air when solenoid valve 202 flows through idling air duct 60 with the prevention air when closing.

Operating principle embodiment illustrated in fig. 13 just replaces distribution piping 72 with an allocation block body component 220 with embodiment illustrated in fig. 11 identical.Identical reference number is represented the described identical parts with Figure 11, and this embodiment's mode of operation is with identical with reference to the described mode of Figure 11.

The pair of holes 222 of in such an embodiment, tube air heater 70 and arm 60 " insert in the block 221, this block 221 have be used for receiving this pipe 70 and arm 60 respectively ", and 223 places are interconnected in the end in this two hole 222.Block 221 has outside thread 224.Have cavity 226 in one block 225, this cavity 226 has the internal thread 228a that is meshed with this screw thread 224, thereby block 221 and 225 bridle joints are arrived together.This internal cavities 226 with many independently passage 227 be communicated with, this each bar passage 227 corresponds respectively to in-engine each cylinder that adopts native system.Every passage 227 all has a hot air and fuel-supply pipe 228, and this delivery pipe 228 extends to connecting tube 229.It should be noted, only represented pipe 228 and connecting tubes 229 (and a fuel injector 40) among Figure 13.This connecting tube 229 is the short pipe of a length, and the diameter of its underpart 229a is less.Thus, just can high-temp waste gas and AIR MIXTURES be flowed to the end 43 that is installed in the sparger 40 in the hole 38 according to identical mode same as above.

In this embodiment, provide temperature transducer 203 in the peripheral wall of this block 225, be used to detect the temperature of cavity 226 interior hot airs and exhaust-gas mixture.

Figure 14 represents to adopt a kind of embodiment of dispenser mechanism shown in Figure 13, but is applied to the embodiment who only waste gas is flowed to pipe 70 shown in Figure 12.Thereby this embodiment's working method is with identical with reference to the described mode of Figure 12, and the structure of dispenser part 220 is with identical with reference to structure shown in Figure 13.

Also comprise in Figure 13 and 14 illustrated embodiment another solenoid valve 202 ', this solenoid valve 202 ' mode of operation respectively with identical with 12 described modes with reference to Figure 11.

Figure 15 has represented the assembling between sparger 40 and the pipe 229 in more detail.

Can see clearly that in this figure the end 229a of reduced guides the mixture of hot air and waste gas into end 43 in the pipe 229, thereby heat fuel in this end 43 for purpose as mentioned above.Enter in the gas-entered passageway 30 of motor from the fuel fume of nozzle 41, and be not provided for this hot air exhaust-gas mixture and fuel fume are flowed to the additional pipe or the passage of cylinder through via hole 38.Shown in obvious among Figure 15, in the reduced end 229a of pipe 229, have a hole 233, insert in these holes 233 end 43 of sparger 40.Utilize O V-shaped ring 234 that this end 43 is enclosed in this hole 233.This reduced end 229a has and hole 233 opening opposing 235, utilizes O V-shaped ring 236 that this opening 235 is enclosed in the hole 38.Thus, the end of pipe 229a has just formed the sealing area around these sparger 40 ends 43, and like this, the mixture of hot air and waste gas just can closely contact and surround this end 43 with this end 43, to heat this end 43 according to foregoing mode.Nozzle 41 is exposed to hole 38 via opening 235, thereby with fuel fume and the cylinder that is delivered to hole 38 and motor from pipe 229 hot air exhaust-gas mixture.

Figure 16 represents a kind of distortion embodiment illustrated in fig. 15, wherein, has an integrally formed steam pipe 78 in the reduced end 229a of pipe 229, and this steam pipe 78 is actually with opening 235 and is connected.The function of this pipe 78 is with identical with reference to the function of the described pipe 78 of Fig. 1, and this pipe 78 can extend to suction valve 34 as shown in Figure 2 always, and perhaps the gas-entered passageway 30 along motor only extends stretch.Embodiment can have a cyclone separator 79 in this pipe 78 as described above.

Figure 17 to 23 represents another embodiment of the present invention.

Figure 17 represents a kind of heat transfer loop 260, and this ring 260 has a central hole 262, and this central hole 262 is used to receive the end regions 43 of sparger 40.As shown in figure 18, end regions 43 is positioned at hole 262, and utilizes O V-shaped ring 263 to seal this end regions 43.Have the groove 266 that is used to hold O V-shaped ring 267 in this ring 260, this O V-shaped ring 267 will seal this ring 260, as following with reference to as described in Figure 21.This ring 260 has the hole 268 that is used for receiving tube 269, and this pipe 269 is via waste gas or the hot air of the 269 outside outputs of the opening in the bottom surface 270 that is formed on ring 260 from this pipe 70.This opening 269 can be depicted as crescent as Figure 17 a, perhaps is depicted as circle as Figure 18 a.In this embodiment, certain high-temperature part by making this ring 260 and motor for example inlet manifold contacts and heats this ring 260, according to the characteristic and the manufactured materials thereof of this ring 260, also can be used to provides extra heat from the hot waste gas or the hot air of tube air heater 70 in addition.Equally, heat this ring 260, so that the temperature increase of end regions 43 is heated the temperature of fuel in this end regions 43 to required being used to, so as previously mentioned, when burner oil, the flash distillation promptly of this fuel is a steam.

According to the same way as described in the previous embodiment, waste gas is offered this tube air heater 70.Use hot air if desired, can collect, this hot air being supplied to ring 260, thereby be convenient to heat this ring 260 near the motor high-temperature area hot air the engine radiator for example.

As shown in figure 21, this ring 260 is arranged in the gas-entered passageway 30 in hole 38, thereby this ring 260 can be with the heat transferred inlet manifold, and the desired temperature of aluminium ring 260 should maintain between 80 ℃ and 150 ℃.

Figure 19 is similar with 18 shown devices to Figure 17 with 20 shown devices, but in this device, relies on merely to contact heated end portion zone 43 between the heat of motor transmission and this ring 260 and the motor, and keeps the fuel that is sprayed from nozzle 41 and be in gaseous state.In this embodiment, this ring 260 is made by for example stainless steel, and stainless steel material is easy to be heated and its heat can be preserved considerable time, thereby no longer need provide extra heat via tube air heater 70.Thus, in this embodiment, by between motor heated portion and this ring 260 directly heat transmit and subsequently between this ring 260 and sparger 40 end regions 43 direct hot transmission the needed heat that is used to improve end regions 43 temperature is provided.By obtaining air from radiator, the temperature that can increase the ordinary combustion air is to maintain gaseous state with fuel.When fuel fume leaves sparger 40, the heat that enters this ordinary combustion air in the inlet manifold can be this fuel fume provides a warm environment, is in gaseous state to keep this steam in the short distance between advancing in being distributed to air stream at this 40 of fuel fume self-injection device.Thereby this can prevent this vapour condensation, and is back to liquid state.

Figure 22 represents to be arranged on shown in the Figure 19 and 20 that amplifies in the hole 38 and encircles 260, and its set-up mode is identical with mode shown in Figure 21.

Can clearly see from Figure 21 and 22, utilize O V-shaped ring 267 should encircle 260 and be sealed in the amplification hole 38.

In embodiment illustrated in fig. 22, owing to do not provide extra hot air and waste gas to this ring 260, if adopt aforesaid operations will help to heat this ring 260, help to heat the end 43 of this sparger 40 further again, there is not simultaneously the hot air exhaust-gas mixture directly to enter in this hole 38 to mix mutually with the fuel fume that sprays from nozzle 41 yet, thereby it is desirable to this fuel of preheating before fuel being offered this sparger 40.Be pre-heating fuel, can make this fuel process heat exchanger 280 shown in Figure 23 before being delivered to sparger 40, this heat exchanger 280 comprises the fuel pipe 282 that is wound in the container 283, and hot liquid 284 enters this container 283 and leaves this container 283 from exporting 285 from entering the mouth.This liquid can be hot water, fuel oil or other any suitable liquid from engine-cooling system, and this liquid and fuel pipe 282 carry out heat exchange, and before fuel is delivered to sparger 40 this fuel of preheating.Should be appreciated that, the preheating degree is not enough to fuel is heated to previous described gasification point, only provide extra preheating so that this fuel temperature is promoted to temperature requiredly in end regions 43, when nozzle 41 ejection fuel, this fuel mode as previously mentioned promptly gasifies like this.

Figure 24 and 25 expressions other two kinds of embodiments of the present invention.Among the formerly described embodiment, via the passage that leads to cylinder (that is) transfer the fuel steam and some waste gas of being used for the heated injectors end via gas-entered passageway, thereby with in this fuel fume and the combustion air suction cylinder.Provide the advantage of some waste gas to be for this cylinder, help to march in the way of cylinder, this fuel that leaves sparger is maintained gaseous state, still, provide waste gas also to have a shortcoming at fuel self-injection device.This shortcoming provides waste gas and has just diluted the suction air of supplying via inlet manifold 32, thereby compare with the motor that the exhaust flow way system is not installed, the given air quantity of engine charge stroke reduces, the result, because with the per unit volume air that fuel mixes mutually is that air density reduces, thereby make power reduce.Although waste gas is for NO _XDischarging play positive effect, but the total release of vehicle exhaust increases.Before in-engine combustion air is supplied to cylinder with suction, utilize this combustion air of heating by the exhaust gases also to cause NO _XThe increase of discharge amount.In addition, the discharge amount of carbon monoxide also increases.

Figure 24 and 25 illustrated embodiments have previous described embodiment's advantage, have also avoided the above shortcoming simultaneously.

At first with reference to Figure 24, identical reference number represents ditto to state identical parts, a flange 400 is provided in the outlet of motor outlet passageway 14, and outlet pipe (not shown) or exhaust header (not shown) are connected to discharge the exhaust in the atmosphere with this flange 400.As convention, this flange 400 is for annular and have a peripheral annular wall 400a, and this annular wall 400a defines a central opening 400b, and waste gas flows to the vent systems of vehicle via this central opening 400b.A waste gas supply tube 402 is connected with flange 400, pass wall 400a and stretch into the opening 400b of this flange 400 and the path of exhaust passage 14 in.This pipe 402 has the chamfered ends 403 facing to passage 14, and the waste gas of discharging from this passage 14 is easy to flow in this pipe 402 like this.A waste gas recurrent canal 405 also is connected with flange 400, and it stretches in this flange 400 according to the 402 identical modes of managing together and is positioned at the next door of this pipe 402.This pipe 405 has the chamfered ends 406 back to passage 14, during like this when waste gas discharge route 14 and through flange 400, just produces Venturi effect at these 406 places, end, thereby is easy to manage 405 combustion gas from this.Can or be fixed on the flange 400 this pipe 402 and 405 welding, forever to be connected with this flange 400.

This pipe 402 is connected with the shell 408 of sparger with 405, and this shell 408 is generally hollow cylinder and has the convergent end wall 409 that leads to air outlet hole 410.The interior hole 411 of pipe 402 and these cylindrical housing 408 perisporiums is communicated with, and this hole 411 is shown schematically among Figure 24.Pipe 405 also is communicated with a hole (not shown) in these shell 408 perisporiums, and this hole is common radially relative with hole 411.Sparger 40 is identical with previous described sparger, but its end 43 is contained in this cylindrical housing 408.On inner circumference edge near this cylindrical housing 408 of tapered wall 409, first Sealing, 412 these ends 43 of sealing; On inner circumference edge away from this cylindrical housing 408 of air outlet hole 410, second Sealing, 413 these end regions 43 of sealing.Thus, sealing

part

412 and 413 defines a chamber 415 around end 43 extensions, and this chamber 415 is communicated with this

pipe

402 and 405 via hole 411 and with pipe 405 corresponding apertures that are communicated with.

As shown in figure 24, this cylindrical housing 408 is force-fitted in the hole 38 that is used for holding fuel injector in the conventional engines, and utilizes being connected between sparger 40 and this sparger 40 and the fuel channel 42 that this cylindrical housing 408 is remained on its appropriate location.Thus, just can prevent that this cylindrical housing 408 from shifting out this hole 38.As shown in figure 24, in this shell 408, be positioned at towards fuel channel 42 and stretch out on shell 408 parts in this hole 38, thereby can not hinder the 38 interior insertions of this shell 408 patchholes are operated with pipe 402 holes that are connected 411 and with pipe 405 corresponding apertures that are connected.By welding this pipe 402 for good and all is connected with shell 408 with 405, thereby the system that forms by flange 400,

pipe

402 and 405 and shell 408 just formed an independently module units, this unit can be used as the optional feature of available engine, simultaneously as shown in figure 24, fuel injector 40 can be inserted in this unit.

When engine start, waste gas flows in this chamber 415, with the end 43 according to foregoing mode heated injectors 40 via pipe 402.Waste gas can be full of this chamber 415, but can not leave this chamber 415 through Sealing 412, does not so just have the gas-entered passageway 30 that waste gas enters motor.This waste gas leaves this chamber 415 via pipe 405, and returns flange 400 via the chamfered ends 406 of this pipe 405.Thus, the waste gas of circulation just heats this end 43 according to aforementioned manner, thereby improves the temperature of fuel in this end 43, and when this fuel left nozzle 41, this fuel mode flash distillation promptly as previously mentioned was gaseous state like this.Therefore, this embodiment has possessed the whole advantages that become fuel fume when previous described fuel leaves nozzle 41, can avoid waste gas is offered gas-entered passageway 30 simultaneously, and avoid heating the suction air that is supplied to gas-entered passageway 30 via inlet manifold 32.Owing to do not have this suction air of preheating, do not have waste gas to enter this gas-entered passageway 30 simultaneously yet, thereby can not produce any deleterious effects to exhausting air and engine efficiency.Fuel leaves after the injector nozzle 41, and this fuel will be distributed to as previously mentioned and suck in the air stream, thereby this fuel can be maintained gaseous state, and this fuel fume can not reconfigure basically and is liquid state.Thus, for marching in the way of cylinder 20, guarantee that this fuel maintains gaseous state, might not use preheated air at fuel self-injection device nozzle 41.

Figure 25 represents a kind of distortion embodiment illustrated in fig. 24, the original build-up member that can be used as motor embodiment illustrated in fig. 25, rather than as the optional feature of available engine.In such an embodiment, suction tude 402 is passed the boring in top 16, gas-entered passageway 30 and the inlet manifold 32, thereby is communicated with hole 38, and this boring is schematically represented with reference number 440.Sparger 40 is directly installed in the hole 38 by convention, and Sealing 412 and 413 is used for as previously mentioned the end regions 43 of this sparger 40 is sealed in this hole 38, and defines a chamber 415.Exhaust emission tube 405 also is communicated with a hole (not shown) of passing inlet manifold 32, and this hole is communicated with chamber 415 and is radially relative with hole 440.This suction tude 402 has the chamfered ends 403 that is provided with as shown in figure 25, the waste gas that escapes and enter exhaust passage 14 from cylinder is easy to flow in this pipe 402 like this, this pipe 405 also has a chamfered ends 406, this end 406 deviates from cylinder, the waste gas that flows through this end 406 like this will produce Venturi effect, should manage 405 interior waste gas with sucking-off.Therefore same, but in the waste gas inlet chamber 415, and it is mobile around the exposed end zone 43 of this sparger 40, as previous embodiment, to heat this end regions 43, thereby improve the temperature and pressure of fuel in this end regions 43, when from nozzle 41 ejection fuel, the flash distillation promptly of this fuel is a gaseous state like this.

It is evident that by foregoing description, the end regions 43 of this sparger 40 is identical with aforementioned embodiment, remove common isolation layer around this injector end region, expose this metal end zone 43, thereby can utilize this metal of waste heating according to mode as previously mentioned, and heat the fuel in this end regions 43 further.

Utilization is supplied to the high temperature circulation waste gas of this chamber 415 fuel temperature in the end regions can be heated to 88 ℃ to 220 ℃ scope.This waste gas can reach a higher temperature according to the normal operating conditions of motor, arrives the above optimum temperature of being mentioned in the scope to guarantee the liquid fuel in this end regions.The outer wall of this waste heating injector end region 43, this outer wall heat the fuel of this end regions of flowing through again further.Be supplied to the volume and the temperature of this waste gas of chamber 415 to depend on engine speed and engine load.That is to say that the speed of motor is fast more or load is big more, the temperature of this waste gas is just high more, volume is just big more.When operation motor in specific environment, motor needs more fuel, and this needs again to obtain more heat from high-temp waste gas conversely, generates temperature with the steam of keeping in this end regions 43.Therefore, when motor is in top speed, consider the high transporting velocity of the high rotation speed and the sparger transfer the fuel of motor, be necessary this end regions is heated on described 220 ℃, thereby can be in the quite short time with this end regions in the temperature increase of fuel to sufficient temp, when fuel left sparger, the flash distillation promptly of this fuel was a gaseous state like this.When engine speed is quite low, when for example unloaded, the speed of this sparger transfer the fuel is also quite low without doubt, thereby fuel will stop the long time in end regions 43, lower end regions temperature for example 88 ℃ just can be heated to temperature required by the fuel that this end regions is interior.Thus, in such an embodiment, exhaust gas temperature can fluctuate along with the variation of engine operating condition, thereby carries out heating function according to the required fuel quantity of motor.On the contrary, if engine speed reduces and load reduces, the needed fuel quantity of motor reduces, and this means to be supplied to this end regions to generate the heat of effect also with less in order to heat this fuel to keep previous described steam.Also can utilize a valve member 450 to control the supply of waste gas, this valve member 450 is a bolt, and this bolt is chock tube 405 (or managing 402) partly, flows through the exhaust gas flow of this pipe 402 and 405 with minimizing.Shown in Figure 24 and 25, preferred, waste gas is extracted in the position of as close as possible engine exhaust valve in vent systems.

Should be appreciated that, in Figure 24 and 25 illustrated embodiments and the previous embodiment that the end regions 43 of injector body is heated, be that fuel to the electronic device downstream area that is positioned at this sparger 40 heats, thereby the raising of fuel temperature can not damage electronic device in this sparger 40 in this end regions.In fact, for ease of cooling off this electronic device, the fuel of normal temperature is flowed to this sparger 40, then this fuel of heating in the end regions 43 of sparger.

Because those skilled in the art can easily make various distortion to the present invention under the situation that does not break away from essence of the present invention and scope, thereby should be appreciated that, the present invention is not limited to the above specific embodiment of describing by example forms.

Claims

1. fuel delivery system that is used for internal-combustion engine, described internal-combustion engine have at least one cylinder and in described cylinder pistons reciprocating, described system comprises;

Fuel injector comprises main body and end regions, from described end regions transfer the fuel so that described fuel is flowed to described cylinder;

Fuel channel extends between described fuel injector and the described cylinder, so that fuel is delivered to described cylinder from described conveyor member; And

Heating equipment, end regions to described sparger heats, thereby before described sparger sprays described fuel, heat the fuel in the described end regions, like this when described sparger sprays described fuel, described fuel can be converted to gaseous state, marches in the way of described cylinder from described sparger along described fuel channel at described fuel simultaneously, can keep described fuel and be in gaseous state.

2. fuel delivery system as claimed in claim 1 is characterized in that the end regions of described sparger is heat conduction, thereby can heat the end regions of described sparger, so that heat transfer is arrived in the end regions of described sparger.

3. fuel delivery system as claimed in claim 1, it is characterized in that, described heating equipment comprises the Room around described injector end region, the exhaust gas entrance that is communicated with described chamber, extends to the waste gas supply tube of described exhaust gas entrance and the waste gas outlet that is communicated with described chamber from described exhaust opening of engine, like this, the waste gas that described motor produces can enter described delivery pipe and be full of described chamber, thereby heat the end regions of described sparger, discharge from described waste gas outlet then.

4. system as claimed in claim 3 is characterized in that, a waste gas delivery line extends to the vent systems of vehicle from described waste gas outlet.

5. system as claimed in claim 3, it is characterized in that, utilize a shell, first Sealing and second Sealing to limit described chamber, the end regions of described sparger passes described first Sealing, described first Sealing is sealed in described end regions in the described shell, described second Sealing is away from described first Sealing, and described second Sealing also is sealed in described end regions in the described shell.

6. system as claimed in claim 3, it is characterized in that, utilize first Sealing and second Sealing to limit described chamber, described first Sealing is sealed in the end regions of described sparger in the described in-engine injector holes, described second Sealing is away from described first Sealing and also the end regions of described sparger is sealed in the described hole, like this, just described chamber is limited to described first and second Sealings, between the inner circle wall in described injector end region between described first Sealing and second Sealing and described hole.

7. system as claimed in claim 3 is characterized in that described delivery pipe has a chamfered ends, and directed so described chamfered ends makes and the waste gas that cylinder of the present invention is discharged can be introduced in the end of described flue gas leading.

8. system as claimed in claim 4, it is characterized in that, described recurrent canal has back to the chamfered ends of described cylinder, like this when waste gas passes through the end of described recurrent canal, just produce Venturi effect, Abgasabsaugung is crossed described waste gas supply tube, described chamber and described waste gas recurrent canal.

9. fuel delivery system as claimed in claim 1, it is characterized in that, the device that is used to heat described injector end region comprises exhaust-carrying device, described exhaust-carrying device is used for be delivered to the end regions of described sparger in the described motor by the waste gas that burning generated of fuel and air, to heat the end regions of described sparger.

10. fuel delivery system as claimed in claim 9, it is characterized in that, described exhaust-carrying device guides to waste gas the end regions of described sparger, so that described waste gas closely contacts with the end regions of described sparger, thus the fuel that heats the end regions of described sparger and be positioned at described injector end region.

11. fuel delivery system as claimed in claim 1, it is characterized in that, the device that is used to heat described injector end region comprises a heat conduction supporting member, described supporting member is used to support and contact the end regions of described sparger, described heat conduction supporting member also contacts with the heated portion of described motor, the heat of described like this motor can pass to the end regions of described sparger via described supporting member, to heat the end regions of described sparger.

12. fuel delivery system as claimed in claim 11, it is characterized in that, described supporting member comprises a ring-shaped article, described ring-shaped article has cylindrical outer wall and cylindrical hole, described cylindrical outer wall is contained in the interior hole of described motor heated portion, with with the described ring-shaped article of the heat transferred of described motor, described cylindrical hole has the cylinder shape inner wall that is used to receive described injector end region, described like this end regions just contacts with described cylinder shape inner wall, heat just can pass to described ring-shaped article by described heated portion, and then passes to the end regions of described sparger.

13. fuel delivery system as claimed in claim 1, it is characterized in that, described fuel delivery system comprises a heat exchanger, described heat exchanger has the heat-exchange tube that is arranged in the described engine exhaust passage, one end of described heat-exchange tube is connected with an air supply pipe, the other end is connected with a hot air recurrent canal, described air supply pipe is used to transport the air from air inlet, and described hot air recurrent canal is used for having heated in described heat-exchange tube air is delivered to the end regions of sparger and extends passage between described fuel conveyor member and the described cylinder.

14. fuel delivery system as claimed in claim 12, it is characterized in that, the heated portion of described motor is positioned at the exhaust side of described motor and is positioned near the exhaust header, provide an air to enter pipe, described air enters pipe and is used for the end regions of guiding cool air to described sparger, and the end regions of described like this sparger can be not overheated.

15. fuel delivery system as claimed in claim 12 is characterized in that, described heated portion is positioned at the air approaching side of described motor.

16. fuel delivery system as claimed in claim 15, it is characterized in that, provide one to enter the hole, to allow waste gas to enter described hot air recurrent canal, waste gas and the air described hot air recurrent canal of just flowing through like this, and described waste gas and Air mixing gas delivery are given the end regions and the described passage of described sparger.

17. fuel delivery system as claimed in claim 16 is characterized in that, the described hole that enters is positioned at described heat-exchange tube, and the position that is connected with described air supply pipe near described heat-exchange tube.

18. fuel delivery system as claimed in claim 17, it is characterized in that, described air supply pipe is connected with the idling air supply pipe of described motor, the idling air described supply tube of just flowing through like this, and march to the described passage that extends between described fuel conveyor member and the described cylinder, by making described idling air stream through described heat-exchange tube and make described idling air and enter the waste gas that the hole enters and mix mutually from described, heat described idling air, and described waste gas and AIR MIXTURES be supplied to the end regions of described sparger and extend described passage between described fuel conveyor member and the cylinder.

19. fuel delivery system as claimed in claim 13 is characterized in that, described heat exchanger comprises a pipe, and described pipe is connected between the exhaust header and an outlet pipe of described motor, and described outlet pipe discharges the exhaust in the atmosphere.

20. fuel delivery system as claimed in claim 1 is characterized in that, has a fuel-air delivery pipe in the described passage between described fuel conveyor member and described cylinder, described delivery pipe is provided in the air inlet passage of described motor.

21. fuel delivery system as claimed in claim 20, it is characterized in that, in described fuel-air delivery pipe, a cyclone separator is set, with when the mixture of described air, waste gas and fuel fume when described fuel-air delivery pipe is advanced, make described mixture become the whirlpool shape, thereby mix described air, waste gas and fuel fume fully.

22. fuel delivery system as claimed in claim 13, it is characterized in that, described motor comprises a plurality of fuel injectors, described hot air recurrent canal is connected with a distribution piping, described distribution piping has many discharge tubes, every discharge tube is corresponding to each fuel injector, and the bearing of trend of every discharge tube all is basically perpendicular to the direction from each sparger ejection fuel.

23. fuel delivery system as claimed in claim 13, it is characterized in that, the described passage that is used for transfer the fuel and air is via described exhaust passage and described motor top and arrive described air approaching side, described passage has the inlet in described exhaust passage, so just waste gas can be sucked in the described passage, to mix mutually with the air and the fuel that flow to described cylinder by described passage.

24. fuel delivery system as claimed in claim 23, it is characterized in that, described air supply pipe is through being arranged on the exchanger on the engine exhaust passage, and described heat exchanger is used for the described air of preheating, and described then air will be transported to around described fuel injector.

25. fuel delivery system as claimed in claim 1, it is characterized in that, described passage is arranged in the described inlet manifold, described passage has that the air that stretches in the described inlet manifold enters arm and the waste gas that is connected with the exhaust passage of motor enters arm, one waste gas pipeline extends described waste gas and enters arm and described air and enter between the arm and the described passage of extend through, like this, when described fuel injector sprays into described fuel in the described passage, described fuel will with enter the air that described air enters arm and mix mutually, and in described passage, advance around described waste gas pipeline, thereby with described waste gas pipeline generation heat exchange, to march to air and the fuel in the described passage of heating in the way of cylinder from described sparger at described fuel, the waste gas of described waste gas pipeline of flowing through simultaneously can flow into described air and enter arm, and be drawn in the described passage with enter the air that arm enters in the described passage via described air, to heat the mixture of described air and fuel further.

26. fuel delivery system as claimed in claim 1 is characterized in that, described system comprises the temperature maintenance device, and the exhaust gas temperature that is used for being supplied to described injector end region maintains certain predetermined temperature, and is overheated to prevent described end regions.

27. fuel delivery system as claimed in claim 26 is characterized in that, described temperature maintenance device comprises a valve, and flowing of the cool air that described valve is used for optionally allowing or cut-out and described waste gas mix mutually reduces the temperature of described waste gas thus.

28. fuel delivery system as claimed in claim 27, it is characterized in that, a temperature sensing device is provided near described end regions, be used to monitor the temperature of described waste gas, if described temperature is higher than described predetermined temperature, just opens described valve and flow in the described waste gas to allow cool air.

29. fuel delivery system, be used for oil or Fuel Petroleum are flowed to internal-combustion engine, the piston that described internal-combustion engine has at least one cylinder, move in described cylinder, be used for exhaust passage that air is imported the gas-entered passageway in the described cylinder and is used to discharge waste gas in the described cylinder, described system comprises:

Fuel injector comprises main body and the end regions that is formed by Heat Conduction Material, like this when heating during described end regions, and can be with the fuel in the described injector end region of heat transferred, to heat the fuel in the described injector end region;

One Room, end regions around described sparger, described chamber has an inlet and an outlet, and the part of described injector end region is stretched out described chamber to be communicated with the gas-entered passageway of described motor, seals described chamber so that the gas-entered passageway of described chamber and described motor is isolated; And

One hot fluid feedway, be used for carrying hot fluid to described chamber, described like this hot fluid can flow through described chamber and discharge from described outlet, described hot fluid is used to heat described indoor described injector end region, thereby with the fuel in the described end regions of heat transferred, to heat described fuel, so in a single day described sparger sprays described fuel via described end regions, because the thermal expansion of heating fuel, described fuel will promptly be converted to gaseous state after the ejection of self-injection device.

30. system as claimed in claim 29, it is characterized in that, described hot fluid feedway comprises a waste gas inlet tube, described waste gas inlet tube extends to the inlet of described chamber from the venting gas appliance of described motor, the described outlet of described chamber is communicated with a waste gas recurrent canal, and described waste gas recurrent canal extends to the venting gas appliance of motor from described outlet.

31. system as claimed in claim 29, it is characterized in that, described chamber is limited by first Sealing and second Sealing, described first Sealing is near the end face of the described end regions of the described fuel of ejection, described second Sealing and described first Sealing separate, described first and second Sealings engage with the end regions of a periphery wall and described sparger, thereby limit described chamber.

32. system as claimed in claim 31 is characterized in that, described periphery wall is the inwall in a hole in the described motor, and described hole is used to receive described sparger.

33. system as claimed in claim 31 is characterized in that, described periphery wall is the inwall around a shell of described injector end region, and described shell can be positioned at a hole of described motor.

34. fuel delivery system that is used for internal-combustion engine, the piston that described internal-combustion engine has at least one cylinder, move in described cylinder, be used for exhaust passage that air is imported the gas-entered passageway in the described cylinder and is used to discharge waste gas in the described cylinder, described system comprises:

One shell is used to receive the end regions of described sparger;

First Sealing is used for when described sparger is positioned at described shell, and the end regions of described sparger is sealed in the described shell;

Second Sealing, be used for when described sparger is positioned at described shell, the end regions of described sparger is sealed in the described shell, so just between the end regions of described shell, described first Sealing, described second Sealing and described sparger, defines a Room;

One waste gas pipeline is connected with described shell, and is communicated with formed chamber when described sparger is positioned at described shell;

One waste gas recurrent canal is communicated with formed chamber when described sparger is positioned at described shell, and described waste gas pipeline and waste gas recurrent canal have a waste gas inlet end and a waste gas exhaust end respectively; And

One venting gas appliance flange, be connected with engine's exhaust system, the waste gas inlet end of described waste gas pipeline and the waste gas exhaust end of described waste gas recurrent canal are connected with described venting gas appliance flange respectively, like this when described sparger is positioned at described shell, can enter described waste gas pipeline, the described chamber of flowing through, return described engine's exhaust system via described waste gas recurrent canal then through the waste gas of described venting gas appliance flange, thereby can heat the end regions of described sparger.

35. fuel delivery system that is used for internal-combustion engine, the piston that described internal-combustion engine has at least one cylinder, move in described cylinder, be used for exhaust passage that air is imported the gas-entered passageway in the described cylinder and is used to discharge waste gas in the described cylinder, described system comprises:

Fuel injector comprises main body and end regions, from described end regions transfer the fuel;

, a small channel, the cross-section area of described small channel and volume be all less than the gas-entered passageway that extends between described sparger and described cylinder, and described small channel is used for transfer the fuel and is used to support the required certain share air of engine internal fuel burning under the situation of no-load speed being higher than; And

36. fuel delivery system as claimed in claim 35 is characterized in that, described heating equipment comprises a heat exchanger, is used for before described air is transported to described injector end region, heats described air part.

37. fuel delivery system as claimed in claim 35, it is characterized in that, described air part is mixed mutually with the waste gas of discharging from described cylinder, and to heat described air further, so just the mixture with described heated air and waste gas is supplied to injector end region and described passage.

38. fuel delivery system as claimed in claim 37, it is characterized in that, described air partly is the idling air of described motor supply, described system comprises an idling air supply pipe, described idling air supply Guan Ziyi idle running helix encloses and extends to described heat exchanger, and be connected with a heat-exchange tube in the described heat exchanger, described heat-exchange tube is connected with a hot gas recurrent canal, also comprise the device that makes waste gas enter described hot gas recurrent canal, described like this waste gas just with described idling air mixing to heat described idling air, described recurrent canal is in order to be supplied to described injector end region with described waste gas and idling Air mixing gas, make the described mixed gas that is heated the idling air and waste gas surround described injector end region heating described end regions, and the fuel fume that makes described sparger ejection proceed to described cylinder with the mixed gas of the described idling air and waste gas that is heated via described row of passages.

39. fuel delivery system as claimed in claim 35, it is characterized in that, has a cyclone separator in the described passage, be used to make the mixture of described idling air, waste gas and fuel fume to form the whirlpool shape, thereby proceed to along described row of passages in the way of described cylinder at described mixture, mix described mixture fully.

40. fuel delivery system as claimed in claim 38, it is characterized in that, described hot air recurrent canal is connected with a distribution piping, described distribution piping has a plurality of outlets, each outlet is corresponding to one in a plurality of fuel injectors, described outlet is used for described waste gas and idling Air mixing gas are supplied to described fuel injector, mixes mutually with the fuel fume with described sparger ejection.

41. fuel delivery system as claimed in claim 35 is characterized in that, described passage comprises a pipe that is installed in the engine intake passage, and the cross-section area of described pipe and volume are all less than the cross-section area and the volume of described gas-entered passageway.

42. fuel delivery system as claimed in claim 35 is characterized in that, described fuel injector is arranged in a hole at motor top, and described hole is communicated with described distribution piping and described fuel-air delivery pipe.

43. fuel delivery system as claimed in claim 42 is characterized in that, the top of described pipe and described motor constitutes one, rather than is installed in a single pipe in the described engine intake passage.

44. fuel delivery system as claimed in claim 38, it is characterized in that, provide described idling air by an idling air transfer block that is installed between described idle running spiral winding and the throttle valve body, described block has first duct and second duct, described first duct is communicated with an inlet that is used to carry described idling air, and described second duct is communicated with the channel connection that passes described idle running spiral winding and with described idling air supply pipe.In this device, the idling air that blocks the fly valve downstream side that is positioned at described throttle valve body enters the duct, if so not via described idling air supply pipe, described idling air just can not enter in the motor.

45. fuel delivery system as claimed in claim 36, it is characterized in that described heat exchanger is formed by the described passage of part, in use, described part passage is exposed in the waste gas that described cylinder is discharged, and described passage leads to the gas-entered passageway of described motor via described block.

46. fuel delivery system as claimed in claim 45 is characterized in that, described passage is through a duct, and described duct extends to described gas-entered passageway from the exhaust passage of described motor.

47. fuel delivery system as claimed in claim 46, it is characterized in that described passage is communicated with a spacer block, have a hole in the described spacer block, described Kong Yuyi distribution piping is communicated with, and described distribution piping is communicated with to receive described idling air with described idling air supply pipe.

48. fuel delivery system as claimed in claim 47, it is characterized in that, described sparger is positioned at described distribution piping, and the end regions of described sparger contacts with described distribution piping, thereby heat described end regions, described sparger is sent into fuel in the described hole of described spacer block, and fuel just mixes mutually with described idling air supply pipe air supplied like this, and then enters in the gas-entered passageway and cylinder of motor via described passage.

49. fuel delivery system as claimed in claim 48, it is characterized in that, described distribution piping and described spacer block engage on the exhaust header of motor, described exhaust header provides a kind of quite hot heating source, to heat the end regions of described sparger, described idling air is flowed to described distribution piping not only can provide combustion air, also described end regions is played cooling action, overheated to prevent described end regions.

50. fuel delivery system as claimed in claim 35, it is characterized in that, has a hole in the described passage, described hole allows waste gas to enter in the described passage, be in heating status to keep the described fuel and the air of advancing, so just the fuel of vapor state can be delivered to the gas-entered passageway and the cylinder of motor along described passage.

51. fuel delivery system as claimed in claim 47, it is characterized in that, described distribution piping and described spacer block are isolated mutually, described idling air supply pipe extend through is positioned at the heat exchanger on the engine exhaust collector, be supplied to the air part of described distribution piping with heating, and and then heat the end regions of described sparger.

52. fuel delivery system as claimed in claim 35, it is characterized in that, described passage comprises that a waste gas enters arm, described waste gas enters arm and is communicated with the exhaust passage of motor, also be connected with a flue gas leading that in described passage, extends, described passage also has an air and enters an arm and a fuel delivery end, entering described flue gas leading that arm is connected with described waste gas stretches into described air and enters in the arm, some of advancing via inlet manifold suck air and can enter described air and enter in the arm like this, and mix mutually with waste gas that described flue gas leading is carried, enter then in the described passage, fuel in spraying into described inlet end proceeds to described cylinder along described row of passages, the air and the fuel of flowing through in the waste gas of described flue gas leading and the described passage carry out heat exchange, and described waste gas and the mixture of described air and fuel fume mix mutually and also can keep described fuel fume and be in gaseous state simultaneously.

53. fuel delivery system as claimed in claim 52, it is characterized in that, the outlet end of described flue gas leading is positioned near the dome-shaped deflection plate, so just but deflection is from the waste gas of described flue gas leading discharge, make described waste gas flow through described air and enter arm, and enter the air that flows to described passage in the arm with described air and mix mutually along the direction of air stream.

54. fuel delivery system that is used for internal-combustion engine, the piston that described internal-combustion engine has at least one cylinder, move in described cylinder, be used for exhaust passage that air is imported the gas-entered passageway in the described cylinder and is used to discharge waste gas in the described cylinder, described system comprises:

Article one, passage is separated with described gas-entered passageway, extends between described sparger and described cylinder, is used for fuel and idling air from described sparger are flowed to described cylinder; And

55. fuel delivery system as claimed in claim 54, it is characterized in that, described passage is the part of distance between the described sparger of extend through and the described cylinder only, described passage has near first end of described injector end region and second end that is connected with described gas-entered passageway, fuel fume will at first flow through described small channel like this, and then it is interior to mix mutually with combustion air to enter described gas-entered passageway, and described combustion air is to be drawn in the described gas-entered passageway under the pumping action of motor.

56. fuel delivery system as claimed in claim 54 is characterized in that, described heating equipment comprises a heat exchanger, be used in described idling air is transported to described injector end region and described passage before, heat described idling air.

57. fuel delivery system as claimed in claim 56, it is characterized in that, described idling air mixes mutually with the waste gas of discharging from described cylinder, and to heat described air further, so just the mixture with described heated air and waste gas is supplied to injector end region and described passage.

58. fuel delivery system as claimed in claim 57, it is characterized in that, described system comprises an idling air supply pipe, described idling air supply Guan Ziyi idle running helix encloses and extends to described heat exchanger, and be connected with a heat-exchange tube in the described heat exchanger, described heat-exchange tube is connected with a hot gas recurrent canal, also comprise the device that makes waste gas enter described hot gas recurrent canal, described like this waste gas just with described idling air mixing to heat described idling air, described recurrent canal is in order to be supplied to described fuel conveyor member with described waste gas and idling Air mixing gas, make the described mixed gas that is heated the idling air and waste gas surround described fuel conveyor member heating described fuel conveyor member, and make fuel that described fuel conveyor member carries with the described mixed gas that the is heated the idling air and waste gas described passage of advancing.

59. fuel delivery system as claimed in claim 54, it is characterized in that, has a cyclone separator in the described passage, be used to make the mixture of described idling air, waste gas and fuel to form the whirlpool shape, thereby proceed to along described row of passages in the way of described cylinder at described mixture, mix described mixture fully.

60. fuel delivery system as claimed in claim 58, it is characterized in that, described hot air recurrent canal is connected with a distribution piping, described distribution piping has a plurality of outlets, each outlet is corresponding to one in a plurality of fuel injectors, described outlet is used for described waste gas and/or idling Air mixing gas are supplied to described fuel conveyor member, to mix mutually with described fuel conveyor member supplied fuel.

61. fuel delivery system as claimed in claim 54 is characterized in that, described passage comprises a pipe that is installed in the engine intake passage, and the cross-section area of described pipe and volume are all less than the cross-section area and the volume of described gas-entered passageway.

62. fuel delivery system as claimed in claim 60 is characterized in that, described fuel injector is arranged in a hole at motor top, and described hole is communicated with described distribution piping and described fuel-air delivery pipe.

63. fuel delivery system as claimed in claim 58, it is characterized in that, provide described idling air by an idling air transfer block that is installed between described idle running spiral winding and the throttle valve body, described block has first duct and second duct, described first duct is communicated with an inlet that is used to carry described idling air, and described second duct is communicated with the channel connection that passes described idle running spiral winding and with described idling air supply pipe.In this device, the idling air that blocks the fly valve downstream side that is positioned at described throttle valve body enters the duct, if so not via described idling air supply pipe, described idling air just can not enter in the motor.

64. fuel delivery system as claimed in claim 56, it is characterized in that described heat exchanger is formed by the described passage of part, in use, described part passage is exposed in the waste gas that described cylinder is discharged, and described passage leads to the gas-entered passageway of described motor via described block.

65. fuel delivery system as claimed in claim 54 is characterized in that, described passage is through a duct, and described duct extends to described gas-entered passageway from the exhaust passage of described motor.

66. as the described fuel delivery system of claim 65, it is characterized in that described passage is communicated with a spacer block, have a hole in the described spacer block, described Kong Yuyi distribution piping is communicated with, and described distribution piping is communicated with to receive described idling air with described idling air supply pipe.

67. as the described fuel delivery system of claim 66, it is characterized in that, described sparger is positioned at described distribution piping, and the end regions of described sparger contacts with described distribution piping, thereby heat described end regions, described sparger is sent into fuel in the described hole of described spacer block, and fuel just mixes mutually with described idling air supply pipe air supplied like this, and then enters in the gas-entered passageway and cylinder of motor via described passage.

68. as the described fuel delivery system of claim 66, it is characterized in that, described distribution piping and described spacer block engage on the exhaust header of motor, described exhaust header provides a kind of quite hot heating source, to heat the end regions of described sparger, described idling air is flowed to described distribution piping not only can provide combustion air, also described end regions is played cooling action, overheated to prevent described end regions.

69. fuel delivery system as claimed in claim 54 is characterized in that, has a hole in the described passage, described hole allows waste gas to enter in the described passage, is in heating status to keep the described fuel and the air of advancing along described passage.

70. as the described fuel delivery system of claim 66, it is characterized in that, described distribution piping and described spacer block are isolated mutually, described idling air supply pipe extend through is positioned at the heat exchanger on the engine exhaust collector, be supplied to the air part of described distribution piping with heating, and and then heat the end regions of described sparger.

71. a fuel delivery system that is used for internal-combustion engine, described internal-combustion engine have at least one cylinder and in described cylinder pistons reciprocating, described system comprises;

One sparger is used for fuel is introduced in the described cylinder, described sedimentation of fuel is being positioned on the described piston of cylinder, thereby made that before lighting described fuel described fuel is just gasifiable.

72. as the described fuel delivery system of claim 71, it is characterized in that, before described fuel being sent into described cylinder and being delivered on the described piston, heat described fuel.

73. as the described fuel delivery system of claim 72, it is characterized in that, described heater comprises a heat exchanger, utilize the waste gas of motor to heat described heat exchanger, the one fuel pipe described exhaust gas source of flowing through so just utilizes described waste gas to heat the fuel that flow to described sparger via described fuel pipe.

74., it is characterized in that described sparger is positioned at the sidewall of described cylinder as the described fuel delivery system of claim 71.

75., it is characterized in that having a hole in the described sidewall as the described fuel delivery system of claim 74, a sleeve is arranged in the described hole, described sparger is arranged in the described sleeve.

76., it is characterized in that described sleeve has an exit orifice as the described fuel delivery system of claim 75, described exit orifice extends to the inside of described cylinder from described hole.

77. as the described fuel delivery system of claim 76, it is characterized in that, the sidewall of described cylinder comprises a block part, described cylinder is positioned at described block part, described hole is formed in the wall of described block and partly passes described block wall, described hole is communicated with the hole that a diameter reduces, described hole extends to described cylinder from described hole, described sleeve comprises a hollow pole socket that is arranged in the hole that described diameter reduces, the nozzle of described like this fuel injector can be positioned at described pole socket, fuel sprayed in the described cylinder and to be sprayed onto on the described piston.

78. as the described fuel delivery system of claim 77, it is characterized in that, described sleeve phases down to inner terminal from its outer end, described the inner just is wider than in described like this outer end, thereby the sparger of different size can be arranged in the described sleeve, the end regions of guaranteeing described sparger simultaneously is positioned near the end of close described cylinder interior of described sleeve.

79. as the described fuel delivery system of claim 78, it is characterized in that, by and described cylinder wall or engine block body wall between the heat transmission heat the end regions of described sparger, with when described sparger sprays described fuel, described fuel can promptly gasify.