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An engine start-stop control method based on engine water temperature and battery SOC hybrid vehicle

A technology for engine water temperature, start-stop control, applied to motor vehicles, combustion engines, internal combustion piston engines, etc., can solve the problems of inability to perform air conditioning in the car, battery power usage, etc. reliable effect

Active Publication Date: 2019-02-05
HARBIN DONGAN AUTOMOTIVE ENGINE MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the hybrid vehicle cannot use the air conditioner and battery power in the vehicle under the standby condition, and further provide an engine start-stop control method based on the engine water temperature and battery SOC of the hybrid vehicle

Method used

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  • An engine start-stop control method based on engine water temperature and battery SOC hybrid vehicle
  • An engine start-stop control method based on engine water temperature and battery SOC hybrid vehicle

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specific Embodiment approach 1

[0021] Specific implementation mode one: combine figure 1 with figure 2 Describe this embodiment. This embodiment provides an engine start-stop control method based on engine water temperature and battery SOC for a hybrid vehicle. The control system includes an air conditioner controller, a battery management system, a hybrid control unit and an electrode control unit, the hybrid control unit is connected to the air-conditioning controller, and the hybrid control unit can accept the air-conditioning request sent by the air-conditioning controller and the difference ΔT between the driver’s demand temperature and the actual temperature of the cab; the hybrid The control unit is also connected with the battery management system, and the hybrid power control unit can receive the battery status issued by the battery management system; the hybrid power unit can make the engine control unit execute the engine start request command, target idle torque command and target idle torque c...

Embodiment 2

[0023] combined with figure 1 with figure 2 Introduce the engine start and stop control method based on the driver's heater request and battery SOC:

[0024] 1. First of all, regardless of whether the heater is turned on or not, after the vehicle enters standby mode, the hybrid power control unit determines the starting and stopping of the engine according to the battery status fed back by the battery management system. The idle speed and torque are determined by the hybrid power control unit, determined as the required charging speed n1 and torque T1, and the vehicle starts the generator with negative torque to generate electricity.

[0025] 2. After the warm air is turned on, the hybrid power control unit determines the engine shutdown water temperature threshold X°C according to the difference ΔT between the driver's demanded temperature and the actual temperature of the cab. Inside the engine control unit there is an ignition control graph of ΔT and X, and the value of ...

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Abstract

The invention relates to a start-stop strategy of an engine under the standby working condition of a hybrid electric vehicle, and belongs to the technical field of hybrid electric engine control. The invention aims to solve the problem that the hybrid electric vehicle cannot use the air conditioner in the vehicle and the power of the storage battery under the standby working condition. The technical solution adopted by the present invention to achieve the above object includes the following steps: the first step is to establish the control relationship between the heater for controlling the engine and the state requirements of the battery; the second step is to control the start and stop of the engine according to the feedback state of the battery management system ; The third step is to determine the working condition of the engine shutdown; the present invention achieves the optimal purpose of precisely controlling the engine water temperature and battery SOC and satisfying comfort and fuel economy.

Description

technical field [0001] The invention relates to a start-stop strategy of an engine under the standby working condition of a hybrid electric vehicle, and belongs to the technical field of hybrid electric engine control. Background technique [0002] At present, with the serious problem of environmental pollution and stricter fuel consumption regulations, more and more attention has been paid to environmentally friendly vehicles. Among them, hybrid vehicles are vehicles with thermal power sources (generated by traditional gasoline engines or diesel engines) and electric power sources (batteries and electric motors). This type of vehicle uses a motor on a hybrid vehicle so that the power system can be flexibly adjusted according to the actual operating conditions of the vehicle, while the engine keeps working in the area with the best overall performance, thereby reducing fuel consumption and emissions, but the hybrid The engine is generally in a shutdown state when the vehicle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W20/10B60W10/06B60W10/08
CPCB60W10/06B60W10/08B60W20/10B60W2510/0676B60W2510/244B60W2710/065B60W2710/0666B60W2710/083Y02T10/40Y02T10/62
Inventor 王建勋郝美刚辛海霞王琦方立辉沙洲郭凤男齐特兰昊朱玺睿张鹏于福嘉丁帮伟丁麟赵志旭王惠闫立君赵长明贾林娜
Owner HARBIN DONGAN AUTOMOTIVE ENGINE MFG CO LTD