Pure electric idling mode quit control method for hybrid power system
A technology for hybrid power system and mode exit, which is applied to the layout of multiple different prime movers of hybrid vehicles and general power plants, power plants, etc., can solve problems such as inability to overcome exit control, and achieve improved fuel saving and emission reduction capabilities Effect
Active Publication Date: 2012-07-11
SAIC MOTOR
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Problems solved by technology
However, none of the technical solutions described in the above patent documents can overcome the above-mentioned shortcomings related to the exit control of the pure electric idle mode.
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[0025] see figure 1 , which schematically shows the composition of a hybrid system on a hybrid vehicle. Such as figure 1 As shown, the hybrid system includes a hybrid system control unit HCU1, an engine 10, an engine controller ECU11, a gearbox 20, a gearbox controller TCU21, a hybrid motor 30, a hybrid motor controller MCU31, a high-voltage battery 40, a low-voltage A battery 60, a high-voltage battery management system BMS41, a high-voltage and low-voltage inverter 50, and an on-vehicle network 70 for connecting and communicating the above various controllers and related components.
[0026] Of course, it should be pointed out and fully understood by those skilled in the art that the above-listed composition situations are only used for exemplary purposes. The hybrid vehicle to which the present invention is applicable may include less or more components than those listed above, for example, the high and low voltage inverter arranged between the low voltage battery and the...
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The invention relates to a pure electric idling mode quit control method for a hybrid power system which comprises a hybrid power motor, a hybrid power system control unit (HCU) and a high-voltage battery. The method comprises the following steps of: acquiring signals from an engine control unit (ECU), a transmission control unit (TCU), a hybrid power motor control unit (MCU) and / or a high-voltage battery management system (BMS) through a vehicle-mounted network; judging that a pure electric idling mode is required to be quit according to the signal from the HCU, and judging whether engine oil supply is required to be recovered in a subsequent working mode of the hybrid power system and whether an engine works normally; if the engine oil supply is required to be recovered, sending an engine oil supply recovery request by the HCU to the ECU, performing rotating speed closed loop control by the hybrid power motor until the engine works normally, and switching a working mode to quit the pure electric idling mode; if engine oil supply is not required to be recovered, sending an engine oil cut-off retaining request by the HCU to the ECU, and directly responding a subsequent working mode torque request by the hybrid power motor to switch the working mode to quit the pure electric idling mode.
Description
【Technical field】 [0001] The invention belongs to the technical field of automobile control, and in particular relates to a control method for exiting a pure electric idle mode of a hybrid power system. 【Background technique】 [0002] With the advancement of science and technology and the continuous enhancement of people's awareness of environmental protection, especially in the face of the reality of the gradual depletion of traditional energy sources, the number of new vehicles using hybrid technology is increasing, and electric energy can be used to achieve pure electric idling function. However, in the prior art, there are still some deficiencies in the exit control for pure electric idling mode, for example, in order to maintain the stability of the system, the fuel cut-off time of the engine will be limited to a certain extent, which is not conducive to improving the fuel consumption of the vehicle, and it is difficult to The engine's refueling process is controlled to...
Claims
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IPC IPC(8): B60W20/00B60W10/06B60W10/08B60W10/26B60W10/105B60K6/42B60W20/15B60W20/16
CPCY02T10/6286Y02T10/62
Inventor 张君鸿周宇星鲁连军王帅宇
Owner SAIC MOTOR