WO2010074354A1

WO2010074354A1 - Fuel consumption improvement device for internal combustion engine

Info

Publication number: WO2010074354A1
Application number: PCT/JP2009/071925
Authority: WO
Inventors: 智英中村; 高蔵高橋
Original assignee: 小林　郁夫
Priority date: 2008-12-26
Filing date: 2009-12-28
Publication date: 2010-07-01
Also published as: JP2010169087A

Abstract

Focusing on the fact that fuel consumption can be improved by heating the fuel, provided is a fuel consumption improvement device for an internal combustion engine, said device increasing the efficiency of heat exchange from a fuel source to a fuel pipe which heats or cools fuel by changing the shape of the pipe, and thus achieving improved fuel consumption with a simple construction. The fuel consumption improvement device for an internal combustion engine is interposed in a fuel supply path between a fuel tank and the combustion part of the engine, regulates the temperature of fuel pumped from the fuel tank, and then supplies the fuel to the combustion part of the engine to improve fuel consumption for the engine. A portion of a fuel pipe that has good thermal conductivity and that passes through the interior of the fuel consumption improvement device is formed in a crushed shape, and the device is equipped with a temperature control means which heats or cools the vicinity of the portion with the crushed shape.

Description

Fuel efficiency improvement device for internal combustion engine

The present invention relates to an internal combustion engine, and in particular, is interposed in a fuel supply line between a fuel tank and a combustion portion of the engine, and adjusts the temperature of the fuel pumped from the fuel tank and supplies it to the combustion portion of the engine. It is the fuel consumption improvement apparatus in the internal combustion engine for aiming at the fuel consumption improvement of.

Conventionally, in order to improve the fuel efficiency of internal combustion engines mounted on traveling vehicles, various improvements such as vehicle weight reduction, engine hybridization, improvement of fuel itself, use of various additives, combustion control of internal combustion engines, etc. Measures have been taken.

Among them, there are several inventions related to the temperature of the fuel supplied to the engine as a measure for controlling the combustion of the internal combustion engine. For example, Patent Document 1 discloses an invention of “a diesel knock prevention device for an engine characterized in that a fuel in a fuel pressure feed path connecting a fuel injection pump and a fuel injection nozzle can be heated by a heating device”. Has been. In the detailed explanation of the invention, “This injected fuel is hot, so it quickly evaporates in the combustion chamber and becomes easy to burn, so the ignition delay is short, diesel knock does not occur, and complete combustion occurs. "It is easy, the combustion efficiency is increased, the engine output is increased, the combustion consumption rate is improved, and the amount of unburned harmful components in the exhaust gas is reduced."

Patent Document 2 states that “an internal combustion engine operating system that includes a heating unit that heats at least a part of the fuel to a predetermined temperature before being sent to the combustion system of the engine. , An operation system including a fuel system is disclosed wherein the temperature is lower than the vaporization temperature of the fuel under the fuel supply pressure, but is equal to or higher than the vaporization temperature of the fuel under the pressure of the combustion system. .

According to the present invention, in a test facility, a standard VWGolf 2000cc engine (2002) mounted on an automobile was operated with an engine output rating of 15 kW under the conditions described in Tables I to V.

As a result, as can be easily seen from Tables I to V, when fuel is preheated and the excess air ratio is increased, fuel consumption is reduced by 14% to 16%, and carbon monoxide, hydrocarbons, and NOX emissions are released. It is stated that the level has been significantly reduced.

JP-A-53-059129

JP-T-2005-53727

The above-mentioned Patent Documents 1 and 2 suggest that the fuel supplied to the combustion part of the engine can be heated or heated in advance to improve the fuel efficiency. Many mention heat sources and heating methods. In other words, exhaust gas or radiator cooling water is used as a heat source, or in the case where engine oil heated by running is used as a heat source, the fuel is heated by arranging a coiled pipe inside the oil pan. However, many of the fuel pipes accommodated in the heating device use ordinary cylindrical pipes, and there is a problem in efficient heat exchange.

Further, in Patent Document 2, in order to form and heat a lean fuel / air mixture, a fuel injector and an air inlet port are provided in the preheater housing of the heating means, and the fuel and air inlet supplied from the fuel injector are provided. Production cost is reduced with a complicated structure such as injecting a lean mixture with air injected from the port and heating the fuel in the heating part, and further providing a nozzle, rotor, and screen arrangement between the air inlet port and the heating part. This is expected to take a considerable amount.

The present invention focuses on the knowledge that fuel efficiency can be improved by heating the fuel, and by changing the shape of the fuel pipe that heats or cools the fuel, the heat exchange efficiency from the heat source to the pipe is improved, and the fuel efficiency is improved with a simple structure. An apparatus for improving fuel consumption of an internal combustion engine that can be improved is provided.

As a result of intensive studies in view of the above, the present inventor has solved this problem by the following means.
(1) To improve the fuel consumption of the engine by interposing a fuel supply line between the fuel tank and the combustion section of the engine, adjusting the temperature of the fuel pumped from the fuel tank and supplying it to the combustion section of the engine A fuel efficiency improvement device for an internal combustion engine of the above, wherein a part of a fuel pipe having good heat conductivity penetrating through the fuel efficiency improvement device is formed in a crushed shape, and the vicinity of the portion of the crushed shape is formed. An apparatus for improving fuel consumption in an internal combustion engine, comprising temperature control means for heating or cooling.

(2) The fuel efficiency improving device for an internal combustion engine according to (1) above, wherein the crushed portions are formed at a plurality of locations at equal intervals or at arbitrary intervals in the axial direction of the fuel pipe. .
(3) The fuel consumption in the internal combustion engine according to (1) or (2) above, wherein the crushed portion is formed in a spiral shape along the axial direction of the fuel pipe. Improvement device.

(4) The cross-section of the crushed shape portion is oval or elliptical, and the short diameter is formed to be in the range of 1/2 to 1/20 of the inner diameter of the fuel pipe. The fuel efficiency improving apparatus for an internal combustion engine according to any one of (1) to (3) above.
(5) Any one of the above items (1) to (4), wherein the crushed shape portion is formed with a narrowed portion serving as a nozzle-like injection port at the axial center portion thereof. Mileage improvement device in an internal combustion engine.

(6) The fuel pipe having the crushed shape portion includes a temperature sensor on the pipe wall, and the temperature control means so that the temperature value detected by the temperature sensor is in the range of 50 ° C to 100 ° C. 6. The fuel efficiency improving apparatus for an internal combustion engine according to any one of the above items (1) to (5), characterized in that the temperature is controlled by the above.

(7) In any one of the preceding items (1) to (6), the temperature control means is based on on / off of an electric heater wound around the fuel pipe or current control. The fuel consumption improvement apparatus in the internal combustion engine of description.
(8) The fuel efficiency improving apparatus for an internal combustion engine according to any one of (1) to (7), wherein the temperature control means is configured to be capable of being heated and cooled by a Peltier element.

(9) The fuel efficiency improvement device stores an arbitrary length portion of both ends of the fuel pipe penetrating through the fuel efficiency improvement device outside, and is stored on both side walls from which the end portions of the fuel pipe protrude from the combustion portion. In order to take in and discharge the warm air, and the wall temperature of the fuel pipe is controlled within a predetermined temperature range by the warm air blown from one side of the air vent. The fuel efficiency improving device for an internal combustion engine according to any one of the above items (1) to (8), characterized in that:

(10) The fuel efficiency improvement device stores an arbitrary length portion of both ends of the fuel pipe penetrating through the fuel efficiency improvement device outside and stores the fuel pipe on both side walls from which the end portions of the fuel pipe protrude. A case provided with two ventilation holes for taking in and discharging warm air, and a cylindrical body provided surrounding the fuel pipe in the case for passing warm air from the combustion section between the two ventilation holes And a heat insulating material filled in a gap between the cylindrical body and the case wall surface, and the wall temperature of the pipe falls within a predetermined temperature range due to warm air blown from one side of the ventilation port. 10. The fuel efficiency improving device for a combustion section according to any one of the above items (1) to (9), wherein

(11) The fuel efficiency improving device may be any one of the temperature control unit using the electric heater according to (7) and the temperature control unit using warm air blown from the ventilation port according to (9) or (10). A fuel efficiency improving device for an internal combustion engine characterized by being able to be used together.
(12) The fuel efficiency improvement device may be configured such that the temperature control means using the Peltier element according to (8) above and the temperature control means using warm air blown from the ventilation port according to (9) or (10) above. A fuel consumption improvement device for an internal combustion engine, characterized by being able to be used in combination.

(13) The fuel efficiency improvement device includes an ambient temperature sensor that detects a temperature around the fuel efficiency improvement device on the case, and an ambient temperature value measured by the ambient temperature sensor and a temperature provided on a pipe wall of the fuel pipe. Either one of the temperature control means which compares the measured temperature value of the sensor and enables the combined use of the electric heater or the Peltier element described in the preceding item (11) and the warm air blown into the ventilation port described in the preceding item (12) That is, the temperature control is performed by energizing the electric heater or the Peltier element, or the temperature control is performed by blowing the warm air of the combustion section into the ventilation port, thereby enabling switching. A fuel consumption improvement device for an internal combustion engine.

(14) A space in which a cylindrical body that surrounds the fuel pipe in the case to allow warm air from the combustion section to pass between the two ventilation openings vents warm air along the wall of the cylindrical body The heat storage material surrounding the fuel pipe is filled, leaving a predetermined temperature for a long time by the heat storage material, and the operating time of each temperature control means can be shortened. (10) The fuel efficiency improvement device for an internal combustion engine according to any one of (13) to (13).

According to the present invention, the following effects are exhibited.
(1) According to the first and second aspects of the present invention, the temperature of the fuel pumped from the fuel tank is adjusted and supplied to the combustion portion of the engine by being interposed in the fuel supply line between the fuel tank and the combustion portion of the engine. Then, a fuel efficiency improvement device that can be placed in an internal combustion engine for improving the fuel efficiency of the engine, and a part of a fuel pipe with good heat conduction that penetrates the fuel efficiency improvement device is formed in a crushed shape, Since the temperature control means for heating or cooling the vicinity of the portion of the crushed shape is provided, the fuel pumped / supplied by the fuel pump mounted inside or outside the fuel tank is crushed in the shape of the fuel pipe. The heat exchange efficiency is further increased by heating or cooling in the vicinity of the portion of the gas pipe and passing through a plurality of crushed shape portions, and the wall temperature of the fuel pipe is quickly increased. It can be controlled to a temperature within a predetermined temperature range in cost, thereby the fuel efficiency of the internal combustion engine.
Further, the fuel efficiency improving apparatus of the present invention can be easily and easily attached to a fuel supply line between a fuel tank of an existing internal combustion engine and a combustion portion of the engine.

(2) According to the invention of claim 3, in addition to the effect of the previous item (1), the crushed portion is formed to be spiral along the axial direction of the fuel pipe. The fuel pumped / supplied by the fuel pump installed inside or outside the fuel tank is swirled in the crushed shape of the fuel pipe, so that it is applied to the tube wall heated or cooled by the temperature control means. The temperature of the pipe wall of the fuel pipe and thus the temperature of the fuel can be controlled to a predetermined temperature more rapidly and efficiently, so that the fuel efficiency of the internal combustion engine can be improved at a higher level.

(3) According to the invention of claim 4, in addition to the effects of the preceding items (1) and (2), the crushed portion has a cross section of an oval shape or an oval shape, and its short diameter is the length of the fuel pipe. Since it is formed to be in the range of 1/2 to 1/20 of the inner diameter, the short diameter of the crushed portion can be selected according to the fuel consumption of the internal combustion engine, A suitable fuel efficiency improvement device can be provided.

(4) According to the invention of claim 5, in addition to the effects of (1) to (3) above, the squeezed shape portion further has a constricted portion serving as a nozzle-like injection port at the axial center portion thereof. Since the fuel pipe is formed, the fuel pipe pumped and supplied from the fuel pump by the crushed portion of the fuel pipe formed so as to be spiral along the axial direction and the nozzle-like injection port, the nozzle-like injection port The fuel is injected into the pipe-shaped space of the fuel pipe while being swirled and accelerated, and the fuel becomes granular or mist and is efficiently heat-exchanged at the predetermined temperature by the tube wall heated or cooled by the temperature control means. In addition, fuel consumption can be improved for each internal combustion engine.

(5) According to the invention of claim 6, in addition to the effects of (1) to (4) above, the fuel pipe having the crushed portion further includes a temperature sensor on its tube wall, The temperature is controlled by the temperature control means so that the detected temperature value of the temperature sensor is in the range of 50 ° C. to 100 ° C. Therefore, the temperature of the fuel is necessary for improving the fuel consumption from the start of the internal combustion engine to the operation. It is possible to always maintain a stable and reliable temperature within a predetermined temperature range.

(6) According to the invention of claim 7, in addition to the effects of (1) to (5) above, the temperature control means is based on on / off of an electric heater wound around the fuel pipe or current control. Therefore, even when the external temperature is low, such as when the internal combustion engine is started or in the winter, the fuel temperature can be rapidly heated to a predetermined temperature range necessary for improving fuel efficiency. Can be maintained stably and reliably.

(7) According to the invention of claim 8, in addition to the effects of (1) to (6), the temperature control means enables heating and cooling by a Peltier element. When the outside temperature is low, such as at the start or in winter, the fuel temperature can be rapidly heated to the predetermined temperature range required for improving fuel economy, and even if the internal combustion engine temperature rises above the predetermined temperature range Since the temperature can be returned to the predetermined temperature range by the cooling action, the temperature of the fuel can always be stably and reliably maintained within the predetermined temperature range necessary for improving the fuel consumption.

(8) According to the ninth aspect of the invention, in addition to the effects of (1) to (7) above, the fuel economy improving device has an outside of an arbitrary length portion at both ends of the fuel pipe passing through the fuel efficiency improving device. In which both ends of the fuel pipe are protruded, and two ventilation holes are provided on both side walls projecting from the end of the fuel pipe to take in and discharge warm air from the combustion section, and either one of the ventilation openings. The temperature of the pipe wall of the fuel pipe is controlled within a predetermined temperature range by the warm air blown from, so that the temperature of the fuel can be improved by a device having a simple structure without using the electric heater or the Peltier element. Thus, it is possible to provide a fuel efficiency improving device that can always be stably and reliably maintained within a predetermined temperature range required for the fuel economy and is excellent in economy.

(9) According to the invention of claim 10, in addition to the effects of (1) to (8) above, the fuel economy improving device is provided with an arbitrary length portion at both ends of the fuel pipe penetrating the fuel economy improving device outside. A case in which two ventilation openings are provided on both side walls from which the end of the fuel pipe protrudes to take in and discharge warm air from the combustion section, and the combustion section between the two ventilation openings. A cylindrical body that surrounds the fuel pipe in the case so as to allow warm air from passing therethrough, and a heat insulating material filled in a gap between the cylindrical body and the case wall surface. As a result, the warm air blown from one side of the ventilation port is concentrated on the outer periphery of the fuel pipe and heat exchange efficiency is improved, and heat dissipation can be prevented from the fuel pipe warmed within a predetermined temperature range by the heat insulating material. Improved equipment installed It becomes less susceptible to changes in the ambient temperature of the internal combustion engine or the environmental temperature, and without using the electric heater or the Peltier element, the temperature of the fuel is set to a predetermined level required for improving the fuel consumption without using a simple structure device. It is possible to provide a fuel efficiency improving device that can always be stably and reliably maintained within a temperature range and is excellent in economy.

(10) According to the invention of claim 11, the fuel efficiency improvement device includes: a temperature control means using an electric heater according to claim 7; and a temperature control means using warm air blown from a ventilation opening according to claim 9 or 10. Because it can be used in combination with either one, when the outside temperature is low, such as at the start of the internal combustion engine or in the winter, the temperature of the fuel is rapidly heated to the predetermined temperature range required for improving fuel consumption by the electric heater, When the temperature in the internal combustion engine rises, it can be switched to temperature control by warm-up of the internal combustion engine, which has the effects of the previous items (6) and (8) or the effects of the previous items (6) and (9). A more economical and efficient fuel efficiency improvement device can be provided.

(11) According to a twelfth aspect of the invention, the fuel efficiency improving device is a temperature control unit using the Peltier element according to the eighth aspect, and the temperature control by the warm air blown from the ventilation port according to the ninth or tenth aspect. Because it can be used in combination with either one of the means, the temperature of the fuel is rapidly increased to the predetermined temperature range required for improving fuel economy by the heating action of the Peltier element when the external temperature is low such as at the start of the internal combustion engine or in winter. After heating and the temperature of the internal combustion engine rises, switch to temperature control by warm-up of the internal combustion engine, and when the fuel temperature rises above a predetermined temperature range, switch to the cooling action of temperature control of the Peltier element to switch to the predetermined temperature A more economical and effective fuel efficiency improvement device that can return to the range and has the effects of the preceding items (7) to (8) or the effects of the preceding items (7) and (9) Can be provided.

(12) According to the invention of claim 13, in addition to the effects of (10) and (11) above, the fuel efficiency improving device includes a peripheral temperature sensor for detecting the temperature around the fuel efficiency improving device on the case. The ambient temperature value measured by the ambient temperature sensor is compared with the measured temperature value of the temperature sensor provided on the pipe wall of the fuel pipe, and the electric heater or Peltier element according to claim 11 and 12, Either one of the temperature control means that can be used together with the warm air blown into the ventilation port, that is, the temperature is controlled by energizing the electric heater or Peltier element, or the warm air of the previous combustion part is blown into the ventilation port. Since either one of the temperature control is determined and switching is possible, the temperature value measured by the ambient temperature sensor is compared with the measured temperature value of the pipe temperature sensor. If the ambient temperature is low and the pipe temperature is low, the fuel pipe is heated by controlling the electric heater or Peltier element to be energized by the control mechanism, and the energization is stopped when the pipe temperature reaches a predetermined value. Alternatively, current control can be performed to maintain a predetermined temperature, and fuel consumption can be improved.

Further, when the warm-up operation of the internal combustion engine advances and the ambient temperature sensor reaches a predetermined temperature value as the temperature of the combustion section rises, the control mechanism sends out the warm air of the combustion section to the air vent even when the pipe temperature is low. The fuel pipe is heated by warm air so that the fuel pipe reaches a predetermined temperature, the electric heater or Peltier element is de-energized to suppress battery consumption, and the fuel temperature is improved by constantly controlling the temperature within the predetermined temperature range. Can be planned.

(13) According to the invention of claim 14, in addition to the effects of (9) to (12), the fuel pipe in the case is provided to allow warm air from the combustion section to pass between the two ventilation openings. The cylindrical body provided in an enclosed manner is filled with a heat storage material that surrounds the fuel pipe leaving a space for passing warm air along the cylindrical body wall. The temperature of the fuel is maintained at a predetermined temperature for a long time, and the fuel efficiency improvement effect does not decrease.

FIG. 1 is a conceptual diagram of an internal combustion engine provided with a fuel efficiency improvement device 1 of the present invention.
a is a perspective view of a fuel pipe formed such that a crushed shape portion of the present invention is spiral along an axial direction.
b is a cross-sectional perspective view of a crushed shape portion of the present invention.
FIG. 3 is a cross-sectional view of a fuel efficiency improving apparatus according to Embodiment 1 of the present invention.
FIG. 4 is a cross-sectional view of a fuel efficiency improving apparatus according to Embodiment 2 of the present invention.
FIG. 5 is a cross-sectional view of a fuel efficiency improving apparatus according to Embodiment 3 of the present invention.

The best mode for carrying out the present invention will be described in detail with reference to the drawings.
FIG. 1 is a conceptual diagram of an internal combustion engine provided with a fuel efficiency improvement device of the present invention.
FIG. 2A is a perspective view of a fuel pipe formed so that the crushed portion of the present invention is spiral along the axial direction.
FIG. 2B is a cross-sectional perspective view of the crushed shape portion of the present invention.
FIG. 3 is a cross-sectional view of the fuel efficiency improving apparatus of Embodiment 1 of the present invention.
FIG. 4 is a cross-sectional view of a fuel efficiency improving apparatus according to Embodiment 2 of the present invention.
FIG. 5 is a cross-sectional view of the fuel efficiency improving apparatus of Embodiment 3 of the present invention.
In the figure, 1 is a fuel efficiency improvement device, 2 is an internal combustion engine, 3 is a fuel tank, 4 is a fuel pump, 5 is a fuel supply line, 6 is a case, 7 is a fuel pipe, 8 is a temperature control means, 9 is a combustion section, 10 is a pipe temperature sensor, 11 is an ambient temperature sensor, 12 is a joint, 13 is a crushed shape part, 14 is a nozzle-like injection port, 15 is a ventilation port, 16 is an electric heater, 17 is a cylindrical body, 18 is a heat insulating material , 19 is a heat storage material.

This invention pays attention to the knowledge that the fuel consumption improvement of an internal combustion engine can be aimed at by heating liquid fuels, such as gasoline or light oil, and the fuel consumption improvement apparatus interposed in the fuel supply line between a fuel tank and the combustion part of an engine A fuel efficiency improving device for an internal combustion engine having a simple structure in which the heat exchange efficiency from the heat source to the pipe is improved by changing the shape of the fuel pipe penetrating inside.

As shown in the conceptual diagram of FIG. 1, the internal combustion engine 2 equipped with the fuel efficiency improvement device of the present invention has a joint 12 connected to the fuel supply line 5 between the fuel tank 3 and the combustion portion 9 of the engine. , 12 and is configured so that the temperature of the fuel taken out from the fuel tank 3 can be adjusted and supplied to the combustion section 9 of the engine.

That is, liquid fuel such as gasoline or light oil accommodated in the fuel tank 3 is absorbed by the fuel pump 4 and pumped and supplied to the fuel supply line 5 through a filter (not shown). Then, the fuel pipe 7 is supplied to a fuel pipe 7 having a good thermal conductivity penetrating through the fuel efficiency improving device 1 and having a shape in which at least a part of the tube wall is crushed. In addition, a temperature control means 8 for heating or cooling the fuel pipe 7 is provided in the case 6 of the fuel efficiency improving device 1 and is adjusted to a temperature within a predetermined temperature range by being heated or cooled by the temperature control means 8. The fuel thus supplied is supplied to the combustion section 9 of the engine and injected into the combustion chamber through a fuel injection nozzle (not shown).

As shown in FIG. 2, the fuel pipe 7 penetrating the fuel efficiency improving device 1 is partially crushed, and the crushed portion 13 extends along the axial direction of the fuel pipe 7. It is preferable to be formed in a spiral shape, and it is also preferable that the fuel pipe 7 is formed at equal intervals or at arbitrary intervals. The short diameter of the cross section of the fuel pipe 7 that has become oval or elliptical by being crushed is 1/2 to 1/20, preferably 1/3 to 1/10 of the inner diameter of the cylindrical portion of the fuel pipe 7. It is good to form so that it may become a range.

Furthermore, in the cross-sectional perspective view of the AA ′ portion of FIG. 2 (b) shown in FIG. 2 (b), a narrowed portion that becomes the nozzle-like injection port 14 is provided at the axial center portion of the crushed portion 13. It is also preferable that the fuel pumped / supplied by the fuel pump 4 is accelerated from the nozzle-like injection port 14 and injected into the remaining space of the fuel pipe 7 without being crushed.

The fuel pumped and supplied from the fuel pump 4 by the spirally formed and crushed portion 13 and the nozzle-like injection port 14 remained without being crushed from the nozzle-like injection port 14 of the fuel pipe 7. The fuel is sprayed into the space of the part while being swirled and accelerated, so that the fuel becomes fine granular or mist, and is heated or cooled by the temperature control means 8 between the pipe wall of the fuel pipe 7. Thus, heat exchange is performed efficiently and maintained within a predetermined temperature range.

As shown in FIG. 3, the first embodiment of the fuel efficiency improving device 1 of the present invention is configured such that the combustion improving device 1 has an arbitrary length portion at both ends of the fuel pipe 7 penetrating through the fuel efficiency improving device 1. And a case 6 having

ventilation openings

15 and 15 for taking in warm air from a radiator or the like (not shown) of the combustion section 9 facing and storing in the axial direction of the fuel pipe 7, and wound around the fuel pipe 7. A Peltier element mounted on the fuel pipe 7 with a metal fin (not shown), an ambient temperature sensor 11 on the case 6, and a pipe temperature sensor mounted on the pipe wall of the fuel pipe 7. 10 and temperature control means 8.

Further, in the second embodiment of FIG. 4, the fuel efficiency improvement device 1 stores the fuel pipe 7 with the arbitrary length portions at both ends of the fuel pipe 7 penetrating the inside of the fuel efficiency improvement device 1 left outside, and the axial direction of the fuel pipe 7. And the case 6 having the

vents

15 and 15 for taking in and discharging warm air from a radiator (not shown) of the first-stage combustion unit 9 facing each other, and for passing warm air from the combustion unit 9 between the

vents

15 and 15. The cylindrical body 17 surrounding the fuel pipe 7, the thermal insulation from the ambient temperature of the previous combustion part 9 filled between the cylindrical body 17 and the case 6, and the thermal insulation 18 for keeping the fuel pipe 7 warm, and the above-mentioned An electric heater 16 wound around the fuel pipe 7 or a Peltier element mounted with a metal fin (not shown) on the fuel pipe 7, an ambient temperature sensor 11 on the case 6, and the fuel The pipe temperature sensor 10 mounted on the pipe wall of the pipe 7, is constituted by a temperature control unit 8.

In the figure, the fuel pipe 7 is provided with a temperature sensor on its tube wall, and the temperature value detected by the temperature sensor is 50 ° C. to 100 ° C., preferably 70 ° C. to 85 ° C. as a predetermined temperature. It is preferable to control the temperature with the temperature control means 8.

The temperature control means 8 maintains a predetermined temperature by turning on / off or current controlling the electric heater 16 wound around the fuel pipe 7.

Further, a metal fin (not shown) is provided in the fuel pipe 7, a Peltier element is attached to the metal fin in place of the electric heater 16, and the energization direction is controlled by the temperature control means 8 to heat and cool to maintain a predetermined temperature. You may make it do.

A control mechanism that can control the combustion improving apparatus 1 by comparing the temperature value measured by the ambient temperature sensor 11 with the measured temperature value of the pipe temperature sensor 10 is added to the temperature control means 8. Whether the temperature control means 8 controls the energization temperature of the electric heater 16 or the Peltier element based on the respective predetermined temperatures, or whether the warm air of the combustion section 9 is sent to and discharged from the

passage openings

15, 15. The predetermined temperature is determined and controlled by the control mechanism to maintain a predetermined temperature.

That is, the temperature control unit 8 automatically or manually measures the temperature value measured by the ambient temperature sensor 11 when the pipe temperature sensor 10 is lower than a predetermined temperature when the combustion unit 9 is started, and the measurement of the pipe temperature sensor 10. When the ambient temperature is low and the pipe temperature is low, the fuel pipe 7 is heated by the control mechanism so that the electric heater 16 or the Peltier element is energized and the pipe temperature is predetermined. When the value is reached, the fuel consumption can be improved by stopping energization or controlling the current to maintain a predetermined temperature.

Further, when the warming-up operation of the internal combustion engine 2 progresses and the ambient temperature sensor 11 reaches a predetermined temperature value as the temperature of the combustion unit 9 rises, the control mechanism allows the warming of the combustion unit 9 to be transferred to the ventilation port even when the pipe temperature is low. 15 and 15 so that the fuel pipe 7 reaches a predetermined temperature and is heated by warm air from the radiator of the combustion section 9 and the electric heater 16
Alternatively, energization of the Peltier element can be stopped to suppress battery consumption, and fuel consumption can be improved by always controlling the temperature within a predetermined temperature range.

In Example 3 of FIG. 5, the fuel efficiency improving device 1 ventilates warm air in a cylindrical body 17 surrounding the fuel pipe 7 for allowing warm air from the combustion section 9 to pass between the vent holes 15 and 15. Since the heat storage material 19 is provided to surround the fuel pipe 7 while leaving a space, the temperature control device 8 is stopped after the heat storage material 19 is heated or cooled by the temperature control device 8 and reaches a predetermined temperature. Even if the temperature is maintained at a predetermined temperature for a long time, heat exchange with the fuel in the fuel pipe 7 can be performed, so that fuel consumption can be improved.
Other configurations and operations are the same as those in the first and second embodiments.

As another control example of the temperature control means 8, if the temperature control means 8 is mounted on the fuel pipe 7 with a bimetal capable of operating at 85 ° C. and turning off the circuit so that the electric heater 16 can be controlled on and off, A simpler fuel efficiency improving apparatus 1 can be configured, for example, the pipe temperature sensor 10 can be omitted.

Further, in order to further simplify, in Example I, instead of the two

vent holes

15 and 15 provided for taking in and discharging the warm air of the case 6, the case 6 may be a net-like metal case, or the case 6 A ventilation port may be provided on the bottom surface or the like, and the fuel efficiency improving apparatus 1 having such a structure may be installed in the vicinity of the combustion unit 9 so that the fuel pipe 7 is heated by the ambient temperature of the combustion unit 9.

It is preferable to use a non-ferrous metal pipe that has a high thermal conductivity such as copper and aluminum and that can be surface-processed such as rust-proof, as the fuel pipe with good thermal conductivity.

The heat insulating material 18 filled between the cylindrical body 17 and the case 6 is preferably made of a non-flammable material having heat resistance such as a nonwoven fabric of glass fiber or ceramics that can be processed and formed.

The heat storage material 19 is preferably a combustible material obtained by mixing clay, sand, etc., kneading with pure water, and combusting.

A fuel supply line between the fuel tank and the combustion section of the engine is installed to improve the fuel consumption of the engine by adjusting the temperature of the fuel pumped from the fuel tank and supplying the fuel to the combustion section of the engine. A fuel efficiency improvement device for an internal combustion engine, wherein a part of a fuel pipe having good heat conductivity passing through the fuel efficiency improvement device is formed into a crushed shape, and the crushed shape portion is a fuel Since it is equipped with temperature control means that heats or cools in the vicinity of the crushed shape formed at multiple locations at equal intervals or at arbitrary intervals in the axial direction of the pipe, it is mounted inside or outside the fuel tank The fuel pumped and supplied by the fuel pump is heated or cooled in the vicinity of the crushed shape portion of the fuel pipe, and further passes through the crushed shape portion at multiple locations, so that the heat exchange effect Can be controlled to a predetermined temperature enhanced, can improve fuel consumption of various internal combustion engines.
Further, the fuel efficiency improving apparatus of the present invention can be easily attached to a fuel supply line between a fuel tank of various existing internal combustion engines and a combustion portion of the engine.

1: Fuel efficiency improvement device 2: Internal combustion engine 3: Fuel tank 4: Fuel pump 5: Fuel supply line 6: Case 7: Fuel pipe 8: Temperature control means 9: Combustion unit 10: Pipe temperature sensor 11: Ambient temperature sensor 12 : Joint 13: Crushed shape portion 14: Nozzle-shaped injection port 15: Ventilation port 16: Electric heater 17: Cylindrical body 18: Insulating material 19: Heat storage material

Claims

An internal combustion engine interposed in a fuel supply line between the fuel tank and the combustion portion of the engine to improve the fuel consumption of the engine by adjusting the temperature of the fuel pumped from the fuel tank and supplying it to the combustion portion of the engine In the fuel efficiency improvement device, a part of the fuel pipe having good heat conductivity passing through the fuel efficiency improvement device is formed in a crushed shape, and the vicinity of the portion of the crushed shape is heated or cooled. A fuel efficiency improving apparatus for an internal combustion engine, characterized by comprising temperature control means for performing the operation.
2. The fuel efficiency improving apparatus for an internal combustion engine according to claim 1, wherein the crushed portions are formed at a plurality of locations at equal intervals or at arbitrary intervals in the axial direction of the fuel pipe.
3. The fuel efficiency improving apparatus for an internal combustion engine according to claim 1 or 2, wherein the crushed portion is formed in a spiral shape along the axial direction of the fuel pipe.
The cross-section of the crushed portion is oval or elliptical, and the minor axis is formed to be in the range of 1/2 to 1/20 of the inner diameter of the fuel pipe. Item 4. The fuel efficiency improving device for an internal combustion engine according to any one of Items 1 to 3.
The fuel efficiency improvement in the internal combustion engine according to any one of claims 1 to 4, wherein the crushed portion is formed with a constricted portion serving as a nozzle injection port at a central portion of the shaft. apparatus.
The fuel pipe having the crushed shape portion is provided with a temperature sensor on the pipe wall, and the temperature control means controls the temperature value detected by the temperature sensor to be in the range of 50 ° C. to 100 ° C. 6. The fuel efficiency improving device for an internal combustion engine according to claim 1, wherein the temperature is controlled.
7. The fuel consumption in the internal combustion engine according to claim 1, wherein the temperature control means is based on on / off of an electric heater wound around the fuel pipe or current control. Improvement device.
The fuel efficiency improving apparatus for an internal combustion engine according to any one of claims 1 to 7, wherein the temperature control means can be heated and cooled by a Peltier element.
The fuel efficiency improvement device stores an arbitrary length portion of both ends of the fuel pipe penetrating the fuel efficiency improvement device outside, and stores warm air from the combustion portion on both side walls from which the end portions of the fuel pipe protrude. It is provided with a case provided with two ventilation holes for intake and discharge, and the wall temperature of the fuel pipe is controlled within a predetermined temperature range by warm air blown from one side of the ventilation holes. 9. The fuel efficiency improving apparatus for an internal combustion engine according to claim 1, wherein:
The fuel efficiency improvement device stores an arbitrary length portion of both ends of the fuel pipe penetrating the fuel efficiency improvement device outside, and stores warm air from the combustion portion on both side walls from which the end portions of the fuel pipe protrude. A case provided with two ventilation openings for intake and discharge, and a cylindrical body provided surrounding the fuel pipe in the case for passing warm air from the combustion section between the two ventilation openings. The pipe wall temperature of the pipe is controlled within a predetermined temperature range by the warm air blown from one side of the ventilation port. 10. The fuel efficiency improving device in a combustion part according to claim 1, wherein
Either the temperature control means by the electric heater according to claim 7 or the temperature control means by warm air blown from one of the two ventilation openings according to claim 9 or claim A fuel efficiency improving device for an internal combustion engine, characterized in that it can be used in combination with the other.
The fuel efficiency improving device is any one of a temperature control unit using a Peltier element according to claim 8 and a temperature control unit using warm air blown from one of the two ventilation ports according to claim 9 and claim 10. A fuel efficiency improving device for an internal combustion engine, characterized in that it can be used in combination with the other.
The fuel efficiency improvement device is provided with an ambient temperature sensor for detecting the temperature around the fuel efficiency improvement device on the case, and the ambient temperature value measured by the ambient temperature and the temperature measured by the temperature sensor provided on the pipe wall of the fuel pipe The electric heater according to claim 11 and claim 12 or any one of temperature control means enabling the combined use of the Peltier element and warm air blown into the ventilation port, that is, an electric heater or Fuel consumption in an internal combustion engine, wherein either temperature control is performed by energizing a Peltier element or temperature control is performed by blowing warm air from the combustion section into the ventilation port and switching is possible. Improvement device.
A cylindrical body that surrounds the fuel pipe in the case to allow warm air from the combustion section to pass between the two ventilation openings, leaving a space for the warm air to flow along the cylindrical body wall. The heat storage material surrounding the pipe is filled, and a predetermined temperature is maintained for a long time by the heat storage material, and the operating time of each temperature control means can be shortened. The fuel efficiency improvement apparatus in the internal combustion engine of any one of these.