CN103133161A - Engine ether fuel feeding control system - Google Patents
Engine ether fuel feeding control system Download PDFInfo
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- CN103133161A CN103133161A CN2013100824115A CN201310082411A CN103133161A CN 103133161 A CN103133161 A CN 103133161A CN 2013100824115 A CN2013100824115 A CN 2013100824115A CN 201310082411 A CN201310082411 A CN 201310082411A CN 103133161 A CN103133161 A CN 103133161A
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- operated valve
- fuel
- engine
- mortor operated
- control system
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Abstract
The invention discloses an engine ether fuel feeding control system and belongs to a gas engine fuel feeding system. The control system can provided fuel to an engine continuously and stably. The engine ether fuel feeding control system comprises a fuel tank and a feeding pump. The fuel tank is provided with an inlet and an outlet, the feeding pump is used for communicating the fuel tank with a common rail of the engine, and at least two pressure bottles are provided with material overflowing ports, air inlets, material discharging ports and material feeding ports. The at least two pressure bottles are respectively connected at two ends of the fuel tank (12) in parallel through first electrically operated valves (1) and fourth electrically operated valves (10). The air inlet of each pressure bottle is connected with the feeding pump in parallel through a second electrically operated valve (2). The material discharging port of each pressure bottle (6) is connected with the common rail (8) of the engine in parallel through a third electrically operated valve (7). An air pump and each electrically operated valve are respectively electrically connected with a controller (11). The fuel feeding control system is matched with the ether fuel engine to be used.
Description
Technical field
The present invention relates to a kind of gas engine fuel supply system, relate in particular to a kind of control system that fuel is provided to the ethers motor.
Background technique:Along with the progress of technology, employing dimethyl ether etc. is that the ethers motor of fuel is more and more; At present, the fuel supply system of such motor is made of the plunger pump that is connected between fuel pot and engine common rail usually.Because ethers fuel has that viscosity is low, be the characteristics such as gas, the easy variation with temperature variation of liquid saturation pressure under normal temperature and pressure; Therefore the change of the space tank in greatly when the liquid level in fuel pot is in low level, pressure diminishes, fuel namely can be vaporized, plunger pump easily produced vapour lock or inhaled the phenomenons such as empty this moment, not only can accelerate plunger wear, but also can cause fuel to supply with discontinuous, pressure transient, engine operation is abnormal.
Summary of the invention:In order to overcome the defective that exists in prior art, the present invention aim to provide a kind of can be continuously, the stable motor ethers fuel supply control system that fuel is provided.
To achieve these goals, the present invention by the following technical solutions: it comprises the charging pump that two ends are provided with the fuel pot of charging hole and discharge port, this fuel pot is communicated with engine common rail; The top is provided with at least two pressure bottles that feedback outlet and suction port, bottom be provided with discharge port and charging hole and is connected in parallel on respectively the two ends of fuel pot by the first mortor operated valve and the 4th mortor operated valve, the suction port of each pressure bottle is in parallel with described charging pump by the second mortor operated valve respectively, and the discharge port of each pressure bottle is in parallel with engine common rail by the 3rd mortor operated valve respectively; Charging pump is air pump; This air pump and each described mortor operated valve are electrically connected to controller respectively.
Be provided with the liquid level sensor that is electrically connected to controller in each pressure bottle; The ingress of engine common rail is provided with the pressure transducer that is electrically connected to controller; Be provided with Decompression valves between air pump and the second mortor operated valve and between the import of fuel pot and the first mortor operated valve.
Compared with the prior art, the present invention replaces plunger pump with air pump owing to having adopted technique scheme on the basis of conventional construction, and has increased at least two pressure bottles; Therefore when a pressure bottle during to the engine common rail transfer the fuel, fuel pot can be to remaining pressure bottle postcombustion, thereby can realize a plurality of pressure bottle alternatingly feeds.In addition, because the volume of pressure bottle is far smaller than fuel pot, also can make fast the pressure in pressure bottle raise and fuel is pressed into engine common rail continually even if the liquid level in pressure bottle is in the low level air pump, thereby can guarantee effectively that motor works continuously.The present invention not only can be used for take dimethyl ether etc. as the compression ignition engine of fuel, also can be used for the compression ignition engine of the combustion gas mixing such as ethers fuel and rock gas, coal gas, shale gas.
Description of drawings:
Fig. 1 is structural representation of the present invention.
In figure: the first mortor operated valve 1 second mortor operated valve 2 Decompression valves 3 air pump 4 liquid level sensor 5 pressure bottle 6 the 3rd mortor operated valve 7 engine common rail 8 pressure transducer 9 the 4th mortor operated valve 10 controller 11 fuel pot 12
Embodiment:The invention will be further described below in conjunction with accompanying drawing and specific embodiment:
As shown in Figure 1: the top of fuel pot 12 is provided with import, the bottom is provided with outlet, and the top of pressure bottle 6 is provided with the flash mouth and suction port, bottom are provided with discharge port and material feeding mouth; The flash mouth of two pressure bottles 6 respectively the material feeding mouth of the inlet parallel by first mortor operated valve 1 and fuel pot 12, this two pressure bottle 6 to pass through respectively the 4th mortor operated valve 10 in parallel with the outlet of fuel pot 12, the suction port of two pressure bottles 6 is in parallel with described charging pump by second mortor operated valve 2 respectively, and the discharge port of each pressure bottle 6 is in parallel with engine common rail 8 by the 3rd mortor operated valve 7 respectively; Charging pump is air pump 4, and this air pump, each first mortor operated valve 1, each second mortor operated valve 2, each the 3rd mortor operated valve 7 and each the 4th mortor operated valve 10 are electrically connected to controller 11 respectively.
For the ease of controlling the fuel level in each pressure bottle 6, be provided with the liquid level sensor 5 that is electrically connected to controller 11 in each pressure bottle 6.For the ease of controlling the pressure of fuel, be provided with the pressure transducer 9 that is electrically connected to controller 11 in the ingress of engine common rail 8; When pressure transducer 9 detects the overpressure that enters in engine common rail 8 or constantly too low, controller 11 just sends to air pump 4 and slows down or assisted instruction, thereby guarantees motor stable operation.For the ease of the pressure of pilot pressure bottle 6 and fuel pot 12, be provided with Decompression valves 3 between air pump 4 and each the second mortor operated valve 2 and between the import of fuel pot 12 and each the first mortor operated valve 1.
Working principle: controller 11 compares by the fuel level in 5 pairs of two pressure bottles 6 of liquid level sensor, if the liquid level in right atrial pressure bottle 6 is in a high position, the first mortor operated valve 1 that 11 autoshutdowns of controller are connected with this pressure bottle with the 4th mortor operated valve 10, open the second mortor operated valve 2 and the 3rd mortor operated valve 7 that are connected with this pressure bottle; So air pump 4 just can be pressed into the fuel in this pressure bottle engine common rail 8.Meanwhile, controller 11 automatically open another first mortor operated valve 1 of being connected with left side pressure bottle 6 be connected the 4th mortor operated valve 10, close another second mortor operated valve 2 and the 3rd mortor operated valve 7 that are connected with this pressure bottle; So the fuel in fuel pot 12 just can add in this pressure bottle by described outlet.
When the liquid level in that pressure bottle 6 of right side drops to predetermined low level, liquid level sensor 5 in this pressure bottle just can send signal to controller 11, so the first mortor operated valve 1 that the second mortor operated valve 2 that is connected with this pressure bottle cuts out, is connected with this pressure bottle with the 3rd mortor operated valve 7 and the 4th mortor operated valve 1 are opened; Meanwhile, another first mortor operated valve 1 that is connected with that pressure bottle 6 of left side be connected another second mortor operated valve 2 and the 3rd mortor operated valve 7 that the 4th mortor operated valve 10 cuts out, is connected with this pressure bottle and open; Thereby realize two pressure bottles, 6 alternate supplies fuel.
When the liquid level in two pressure bottles 6 all was in low level, controller 11 sent halt instruction to air pump 4, and closed each the second mortor operated valve 2 and the 3rd mortor operated valve 7, opens each first mortor operated valve 1 and the 4th mortor operated valve 10 postcombustion in each pressure bottle 6.
Claims (5)
1. motor ethers fuel supply control system comprises the charging pump that two ends are provided with the fuel pot of import and outlet, this fuel pot is communicated with engine common rail; It is characterized in that: the top is provided with at least two pressure bottles (6) that flash mouth and suction port, bottom be provided with discharge port and material feeding mouth and is connected in parallel on respectively the two ends of fuel pot (12) by the first mortor operated valve (1) and the 4th mortor operated valve (10), the suction port of each pressure bottle (6) is in parallel with described charging pump by the second mortor operated valve (2) respectively, and the discharge port of each pressure bottle (6) is in parallel with engine common rail (8) by the 3rd mortor operated valve (7) respectively; Charging pump is air pump (4); This air pump and each described mortor operated valve are electrically connected to controller (11) respectively.
2. motor ethers fuel supply control system according to claim 1, is characterized in that: be provided with the liquid level sensor (5) that is electrically connected to controller (11) in each pressure bottle (6).
3. motor ethers fuel supply control system according to claim 1 and 2, it is characterized in that: the ingress of engine common rail (8) is provided with the pressure transducer (9) that is electrically connected to controller (11).
4. motor ethers fuel supply control system according to claim 1 and 2, it is characterized in that: the outlet port of the charging hole of fuel pot (12) and air pump (4) respectively is provided with a Decompression valves (3).
5. motor ethers fuel supply control system according to claim 3, is characterized in that: be provided with Decompression valves (3) between air pump (4) and the second mortor operated valve (2) and between the import of fuel pot (12) and the first mortor operated valve (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100824115A CN103133161A (en) | 2013-03-15 | 2013-03-15 | Engine ether fuel feeding control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100824115A CN103133161A (en) | 2013-03-15 | 2013-03-15 | Engine ether fuel feeding control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103133161A true CN103133161A (en) | 2013-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100824115A Pending CN103133161A (en) | 2013-03-15 | 2013-03-15 | Engine ether fuel feeding control system |
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| CN (1) | CN103133161A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006274997A (en) * | 2005-03-30 | 2006-10-12 | Nissan Diesel Motor Co Ltd | Fuel supply device for engine |
| JP2007120423A (en) * | 2005-10-28 | 2007-05-17 | Isuzu Motors Ltd | Fuel supply device for low boiling point fuel |
| CN101092917A (en) * | 2007-07-21 | 2007-12-26 | 郑国璋 | Automobile fuel supply system |
| JP2008019719A (en) * | 2006-07-10 | 2008-01-31 | Chuo Motor Wheel Co Ltd | Storage device for liquefied gas fuel |
| CN101509417A (en) * | 2009-03-20 | 2009-08-19 | 天津大学 | Dimethyl ether common rail electric-controlling injection system |
| CN102606345A (en) * | 2012-03-20 | 2012-07-25 | 武汉科技大学 | Dimethyl ether fuel injection system |
-
2013
- 2013-03-15 CN CN2013100824115A patent/CN103133161A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006274997A (en) * | 2005-03-30 | 2006-10-12 | Nissan Diesel Motor Co Ltd | Fuel supply device for engine |
| JP2007120423A (en) * | 2005-10-28 | 2007-05-17 | Isuzu Motors Ltd | Fuel supply device for low boiling point fuel |
| JP2008019719A (en) * | 2006-07-10 | 2008-01-31 | Chuo Motor Wheel Co Ltd | Storage device for liquefied gas fuel |
| CN101092917A (en) * | 2007-07-21 | 2007-12-26 | 郑国璋 | Automobile fuel supply system |
| CN101509417A (en) * | 2009-03-20 | 2009-08-19 | 天津大学 | Dimethyl ether common rail electric-controlling injection system |
| CN102606345A (en) * | 2012-03-20 | 2012-07-25 | 武汉科技大学 | Dimethyl ether fuel injection system |
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Application publication date: 20130605 |