Startup control method of mixed power automobile

A technology of hybrid electric vehicle and starting request, which is applied in the directions of hybrid electric vehicle, starting of engine, arrangement of multiple different prime movers of general power plant, etc., can solve the problem of long starting time, increasing fuel consumption pollutants, and insufficient starting process Stability and other issues, to achieve the effect of optimizing the performance of the whole vehicle and improving the performance of starting

Active Publication Date: 2009-04-29
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Similarly, when the driver has a request to start the engine, the HCU will enter the start mode, which is the same as a traditional car. The current hybrid car starts the engine by the starter motor installed on the flywheel side of the engine. The star...

Method used

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  • Startup control method of mixed power automobile

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Embodiment 1

[0018] figure 1 It is a system structure diagram of a coaxial parallel hybrid electric vehicle with a driving motor and an engine to which the starting control method of the present invention is applied. Such as figure 1 As shown, the engine 1 and the driving motor (ie ISG motor) 2 are coaxially connected in parallel, and the engine 1 and the driving motor 2 transmit power to the driving wheel 5 through the clutch 3 and the transmission 4 . The inverter 9 converts the current from the high-voltage battery 15 into a three-phase current to drive the ISG motor 2 when driven by the driving motor 2 . When the drive motor 2 is in the state of power generation or regenerative braking, the inverter 9 can rectify the three-phase current into two-phase current and transmit it to the high-voltage battery 15 for storage. The engine controller 6 is responsible for controlling the engine, such as fuel injection and ignition control when starting the engine. The vehicle controller (i.e. H...

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Abstract

The invention aims at providing a start-up control method suitable for a hybrid vehicle among which a drive motor and an engine are of coaxial parallel type; the start-up control method for the hybrid vehicle uses different start-up ways under different conditions; under a permitting condition, the drive motor is preferably used for driving the engine to start up; the start-up control method has the advantages of short start-up time, high start-up rotation speed, smooth start-up process and less pollution emission, can also avoid the damage to the battery, the drive motor, and the like, can improve the start-up performance and achieve the optimization of the whole vehicle performance.

Description

technical field [0001] The invention belongs to the control field of hybrid electric vehicles, and in particular relates to the starting control of hybrid electric vehicles. Background technique [0002] In response to the energy crisis and environmental degradation, energy-saving and environmentally friendly hybrid electric vehicles have been paid more and more attention. Compared with traditional cars, hybrid vehicles require a vehicle controller (referred to as HCU), a drive motor and an energy storage package (usually a high-voltage battery). Among them, the vehicle controller is responsible for judging the driver's intention and the state of the vehicle. When there is a driver's acceleration request, the HCU interprets the power request, and then performs power distribution, requesting power from the engine and the drive motor respectively; when the driver has a deceleration request When requested, the HCU controls the drive motor to enter the regenerative braking stat...

Claims

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Application Information

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IPC IPC(8): B60W10/08B60W10/06B60W20/00B60W10/26F02N11/00B60W20/16B60W20/17B60W20/40
CPCY02T10/6286B60K6/485B60K2006/268B60W10/06B60W10/08B60W20/20B60W2510/0676B60W2510/087B60W2510/244B60W2510/246B60W2530/16F02N11/006F02N11/04F02N11/0814F02N11/0866F02N2200/061F02N2300/2002Y02T10/62
Inventor 杨上东冯超
Owner CHERY AUTOMOBILE CO LTD
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