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Low temperature auxiliary starting system for alcohol fuel vehicle

A technology of starting system and alcohol fuel, which is applied in charging system, combustion engine, fuel injection control and other directions to achieve the effect of solving low temperature startability and emission performance, small changes to the whole vehicle, and easy realization.

Inactive Publication Date: 2009-12-09
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a low-temperature auxiliary starting system for alcohol-fueled vehicles, which solves the problem of cold-starting high-proportion ethanol-gasoline vehicles at relatively low temperatures and satisfies the normal driving requirements of the entire vehicle

Method used

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  • Low temperature auxiliary starting system for alcohol fuel vehicle

Examples

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Effect test

Embodiment 1

[0014] Example 1, such as figure 1 As shown, a low-temperature auxiliary starting system for an alcohol-fueled vehicle includes a vehicle fuel supply system and an engine electronic control unit (ECU) 7 . The vehicle fuel supply system includes a main fuel tank 8, a main fuel pump 10 and a fuel injector 11 connected to the intake pipe of the engine. The ECU7 is electrically connected to and controls the main oil pump 10 . A cold start gasoline tank 3 and a cold start oil pump 4 are set and pipelines are connected to the cold start injection joint 6 arranged at the front end of the intake pipe 9 of the engine 1; a water temperature sensor 2 is also set at the engine water channel and is electrically connected to the ECU7. The ECU7 is also electrically connected to and controls the cold start oil pump 4 .

Embodiment 2

[0015] Example 2, such as figure 1 As shown, a low-temperature auxiliary starting system for alcohol fuel vehicles, in order to further safely control the cold start oil pump 4, a solenoid valve 5 is also set between the cold start oil pump 4 and the connecting pipeline of the cold start injection joint 6, and the described The solenoid valve 5 is electrically connected to the ECU 7 . All the other are with embodiment 1.

[0016] The core of the present invention is that the ECU of the whole vehicle judges whether to use the gasoline auxiliary start system according to the water temperature. When the system judges that the ethanol vehicle needs to be started by using the cold start system, it controls the opening and closing of the cold start solenoid valve by controlling the operation of the main and cold start oil pumps. Time to control the amount of gasoline injection to ensure a smooth engine start. When certain conditions are met, turn off the auxiliary oil supply syste...

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Abstract

The invention discloses a low temperature auxiliary starting system for an alcohol fuel vehicle, which comprises an entire vehicle fuel oil feed system and an engine electric control unit (ECU), wherein the entire vehicle fuel oil feed system comprises a main oil tank, a main oil pump and an oil injector which is in pipeline connection with the inside of an engine air intake pipe; and the ECU is electrically connected with the main oil pump and controls the main oil pump. The low temperature auxiliary starting system is characterized in that: a cold start gasoline tank and a cold start oil pump are arranged and are in pipeline connection with a cold start injection connector arranged at the front end of the engine air intake pipe; an engine water channel (a water outlet of a cylinder cover of an engine) is provided with a water temperature sensor which is electrically connected with the ECU; the ECU is electrically connected with the cold start oil pump and controls the cold start oil pump; and an electromagnetic valve is arranged between connecting pipelines of the cold start oil pump and the cold start injection connector, and the electromagnetic valve is electrically connected with the ECU. Because additional gasoline injection is only adopted to improve the cold start performance, the low temperature auxiliary starting system has few modification on an entire vehicle, simple structure, easy realization, reliable performance and low cost, can effectively solve the problems of low temperature start and emission performance of the entire vehicle.

Description

technical field [0001] The invention relates to an engine fuel supply system, in particular to a low-temperature auxiliary starting system for an alcohol fuel vehicle. Background technique [0002] At present, the promotion of ethanol gasoline in China, the United States, Brazil and other countries and regions has gradually formed a scale, especially in Brazil, where the promotion is more extensive and mature, and the proportion of ethanol is also relatively high (up to E100). The promotion of ethanol gasoline can effectively alleviate the shortage of petroleum energy and better protect the environment. However, due to the characteristics of ethanol fuel itself, cold start is poor, especially when high-proportion ethanol gasoline is at a lower temperature, it is more difficult to start, so the cold start problem needs to be solved. Contents of the invention [0003] The purpose of the present invention is to provide a low-temperature auxiliary starting system for alcohol-...

Claims

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Application Information

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IPC IPC(8): F02D41/06F02M21/04
CPCY02T10/32Y02T10/30
Inventor 张小彬
Owner CHERY AUTOMOBILE CO LTD
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