Ethanol engine cold-starting device and method

A technology for cold start and engine, applied in the directions of engine start, engine components, engine control, etc., can solve the problems of poor cold start performance and difficult cold start of ethanol gasoline, improve cold start performance, and promote emission and economy. Effect

Active Publication Date: 2008-03-19
CHERY AUTOMOBILE CO LTD
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  • Description
  • Claims
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Problems solved by technology

[0002] At present, ethanol vehicles on the market mostly use low-proportion ethanol and gasoline for mixed combustion, and there is no obvious problem of cold start difficulty
However, as the proporti

Method used

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  • Ethanol engine cold-starting device and method

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[0017] This application will now be further explained in conjunction with the drawings.

[0018] As shown in FIG. 2, the cold start heater is installed in the combustion chamber of the cylinder head 9 near the spark plug 10. As shown in Figure 1, the battery 1, the key switch 2, the cold start signal light 3, the solenoid valve 4, and the heater 5 are connected in series in a circuit. The heater temperature sensor and the water temperature sensor are connected to the engine electronic control unit ECU8.

[0019] The engine electronic control unit ECU8 uses the temperature feedback from the water temperature sensor 7 to determine whether the device needs to be activated. When the temperature fed back by the water temperature sensor is below -15°C, the ECU 8 will turn on the solenoid valve. When the key switch 2 is turned off (that is, the key is turned to the ignition position), the circuit is turned on, and the heater 5 uses the power of the battery 1 for 10 seconds. Within the be...

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Abstract

The invention discloses an ethanol cold starting device and a cold starting method. The device comprises an engine cylinder cover, a heater, a cold starting signal lamp, a solenoid valve, a water sensor and a heater temperature sensor, wherein, the heater is installed at the position near to the spark plug in the cylinder cover combustion chamber; the heater, the solenoid valve, the cold starting signal lamp and the battery as well as the key switch are connected in a circuit in series, the engine electric controlling unit ECU judges whether to use the device through the temperature fed back by the water temperature sensor. When the temperature fed back by the water temperature sensor is below-15degrees below zero centigrade, the ECU can switch on the solenoid valve. When the key switch is closed, the circuit is switched on, and the heater can heat the self temperature to more than 700 centigrade within 10 seconds through the electricity of the battery and heat the air in the cylinder, to reach the purpose of smooth ignition under low temperature. Through the above device and method, the problem of the cold starting of high proportion ethanol gasoline is well solved, and thereby to promote the emission and the economical efficiency to be improved.

Description

Technical field [0001] The invention relates to the technical field of engines, in particular to an ethanol engine cold start device and method. Background technique [0002] At present, ethanol cars on the market mostly use low-proportion ethanol and gasoline mixed combustion, and there is no obvious cold start difficulty. However, as the proportion of ethanol increases, the cold start performance of ethanol gasoline will get worse and worse. At this time, a special cold start system is needed to realize the cold start of ethanol cars. Summary of the invention [0003] The purpose of the present invention is to provide an ethanol engine cold start device and method. The air in the cylinder is heated by the heater to achieve the purpose of smooth ignition at low temperature. [0004] The technical scheme of the present invention is as follows: [0005] An ethanol engine cold start device, including an engine cylinder head, a heater, a cold start signal lamp, a solenoid valve, a ...

Claims

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Application Information

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IPC IPC(8): F02N17/06F02N19/02F02N19/10
CPCF02D41/0025F02N19/10F02D41/064
Inventor 项发青
Owner CHERY AUTOMOBILE CO LTD
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