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Power control method suitable for hybrid commercial vehicle

A power control and hybrid technology, applied in the field of new energy vehicles, can solve the problem of high fuel consumption rate, and achieve the effect of reducing the proportion of idling fuel consumption, reducing fuel consumption, and reducing fuel consumption

Pending Publication Date: 2021-02-12
DAYUN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to solve the problems of the existing hybrid vehicle control scheme for commercial vehicles, such as frequent start-stop and low-speed driving, high fuel consumption rate, etc., the present invention provides a power control method suitable for hybrid commercial vehicles

Method used

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  • Power control method suitable for hybrid commercial vehicle
  • Power control method suitable for hybrid commercial vehicle
  • Power control method suitable for hybrid commercial vehicle

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Embodiment Construction

[0028] combine figure 2 and image 3 Describe this embodiment, a power control method suitable for hybrid commercial vehicles. When the vehicle is started, the flow chart of the hybrid driving state is as follows figure 1 , make the engine work in the economical range as much as possible according to the vehicle state based on different power sources.

[0029] A: Motor-based driving state

[0030] When the vehicle speed is lower than 20km / h (can be calibrated), the whole vehicle is in the motor-based driving state, and the torque driven by the motor changes with the accelerator opening and speed.

[0031] Under the condition of engine idling speed, the whole vehicle has the following two working states according to the depth of the accelerator pedal:

[0032] a: If throttle depth > 90%,

[0033] Then the engine and the motor will output torque together, the motor is the main and the engine is the auxiliary;

[0034] b: If the throttle depth ≤ 90%,

[0035] Then the engi...

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Abstract

The invention discloses a power control method suitable for a hybrid commercial vehicle, relates to the field of new energy vehicles, and solves the problems that according to an existing hybrid powervehicle control scheme of the commercial vehicle, due to the working conditions of frequent starting and stopping, low-speed driving and the like, the fuel consumption rate is high and the like. According to the method, motor driving is adopted in working conditions such as starting and low-speed low accelerator. In high-speed large accelerator working condition, an engine and a motor are jointlyadopted for driving, and through a reasonable energy recovery strategy, oil consumption is obviously reduced compared with an existing control scheme. The fuel consumption is effectively reduced by reasonably controlling the start and stop of the engine. Starting and stopping are reasonably controlled by detecting the SOC of a power battery, the vehicle speed, the air pressure of a brake air chamber, the voltage of a storage battery and other relevant parameters of starting and stopping of an engine, and the idling oil consumption ratio is reduced on the premise that the dynamic property andsafety of the whole vehicle are guaranteed. According to the method, by reasonably distributing the power source, the fuel consumption rate during starting and low speed is reduced.

Description

technical field [0001] The invention relates to the field of new energy vehicles, in particular to a power control method suitable for hybrid commercial vehicles. Background technique [0002] Hybrid vehicles are an important development direction of new energy vehicles. In recent years, the key components and vehicle assembly technologies of hybrid electric vehicles have been developing rapidly. As the core control technology of hybrid electric vehicles, the power control strategy of hybrid electric vehicles affects the dynamic performance, fuel efficiency and driving experience of the whole vehicle, and is an important part of the whole vehicle control technology of hybrid electric vehicles. [0003] The research and application of domestic hybrid electric vehicles has been going on for many years, and various solutions have been proposed for the components of the hybrid electric system, but there are few researches on the power control methods of hybrid electric commerci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/15B60W10/06B60W10/08B60W40/105B60W40/00
CPCB60W20/15B60W10/06B60W10/08B60W40/105B60W40/00Y02T10/62
Inventor 张学锋杨维刚杨志超
Owner DAYUN AUTOMOBILE CO LTD
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