Engine on-off control method for mixed power automobile

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...

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 not consider the state of the engine and the power requirements of other components of the vehicle, but controls it

[0005] Therefore, in the traditional idle stop and start control, there are deficiencies such as the idle stop is not smooth, the start time is long, and the stop is too frequent.

Images