Engine on-off control method for mixed power automobile

A hybrid electric vehicle, start-stop control technology, applied in the direction of engine control, hybrid electric vehicles, the layout of multiple different prime movers of general power plants, etc., can solve the problems of long start-up time, non-smooth idle stop, frequent stop, etc. , to achieve the effect of ensuring output power, realizing quick start and improving emission performance

Inactive Publication Date: 2007-06-27
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing engine stop/start control, due to the use of traditional starter motors, the start-up time is too long, especially when the engine is frequently stopped/started, the start is not smooth, and it is easy to cause traffic jams;
[0004] In addition, the existing idle stop control does

Method used

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  • Engine on-off control method for mixed power automobile

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Embodiment Construction

[0022] Several possibilities that the engine provided by the present invention enters automatic shutdown are:

[0023] Clutch 30 is closed and the vehicle is in neutral; this is the most conservative situation requiring a definite restart time.

[0024] Step on the brake when the clutch 30 is disengaged; in this case, when the driver steps on the brake pedal, the control method judges that the driver has the intention to stop the engine, and the ECU only obtains the signal of stepping on the brake pedal from the driver. Of course, the engine Restart time also needs to take into account the time it takes for the driver's foot to move from the brake pedal to the accelerator pedal.

[0025] The clutch 30 is disengaged, and the vehicle is in neutral; when the driver does not want to stop the engine by stepping on the brake, for example, the vehicle is stopped by the handbrake.

[0026] Fig. 1 has provided the hybrid power system that the present invention applies, and the present...

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PUM

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Abstract

The present invention relates to engine on-off control method for mixed power automobile. In condition of engine coolant temperature higher than preset value, automobile speed lower than the preset idle speed, air conditioner in off state, no treading on the accelerator pedal, auxiliary braking vacuum pump with certain vacuum degree, etc., the engine will be in idle stop state and may be re-started only after the EMS receiving starting signal. The present invention realizes the idle stop of the engine by means of the EMS, controls the fast starting of the engine with the EMS to control the motor, and makes the engine to jet oil and ignite after the motor drives the engine to certain rotation speed. The said control method can start the engine fast and raise the starting exhaust performance of the engine.

Description

technical field [0001] The invention relates to a control method for engine start / stop of a hybrid vehicle, and also relates to idle-stop control of a traditional vehicle engine, and is especially suitable for engine start-stop control with a large torque starter motor . Background technique [0002] When the engine is idling and the vehicle stops, the engine works at a lower speed, which not only makes it difficult to control emissions, but also increases fuel consumption. On a traditional car, an idle speed control device can be added. When the device detects that the vehicle is in a stopped state, it controls the engine to stop to realize the control of fuel consumption and emissions. When the idle speed control device detects that the vehicle needs power, such as when the air conditioner is turned on, the driver presses the accelerator pedal or puts in gear, the system will automatically start the engine without having to receive a signal from the start key again. [0...

Claims

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Application Information

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IPC IPC(8): B60W10/06B60W10/08B60W20/00F02D29/00B60K6/02B60K6/20B60W20/15B60W20/16
CPCY02T10/6286Y02T10/62
Inventor 马建新朱东
Owner CHERY AUTOMOBILE CO LTD
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