Range extender starting control method and system

A technology of starting control and range extender, which is applied in the direction of controlling drive, control device, motor vehicle, etc., can solve the problem of inability to start the engine quickly, and achieve the effect of large starting torque

Active Publication Date: 2020-03-24
DONGFENG MOTOR CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a method and system for controlling the start of a range extender to solve the technical problem that the existing range extender starts with only the speed control variable and cannot quickly start the engine. The inventi

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  • Range extender starting control method and system
  • Range extender starting control method and system
  • Range extender starting control method and system

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Embodiment Construction

[0058] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0059] See figure 1 , a preferred embodiment of the present invention provides a method for controlling the start of a range extender, comprising the following steps:

[0060] S101. Detect the actual rotational speed and actual current of the generator, and obtain the target rotational speed and target current of the generator according to the received starting control request;

[0061] S102. Calculate and obtain the output torque of the generator according to the...

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Abstract

The invention discloses a range extender starting control method, which comprises the following steps of: detecting the actual rotating speed and the actual current of a generator, and obtaining the target rotating speed and the target current of the generator according to a received starting control request; calculating and obtaining the output torque of the generator according to the target rotating speed and the actual rotating speed; calculating and obtaining the correction torque of the generator according to the target current and the actual current; performing weighting processing on the output torque and the correction torque to obtain a final output torque of the generator; and controlling and adjusting the torque of the generator by taking the final output torque as a target torque. Starting control of the range extender can be optimized, the starting efficiency of the generator is improved, and the starting time of the range extender is shortened, so that the electric advantages are brought into full play, and the purpose of quickly starting the engine is achieved.

Description

technical field [0001] The invention relates to the technical field of automobile control, in particular to a method and system for controlling the start of a range extender. Background technique [0002] The range extender carried by the existing range-extended electric vehicle is composed of a generator and an engine, and the generator and the engine are connected through a set of single-stage reducer, and the generator and the engine are mechanically connected. In this electromechanical system, the stable power generation is obtained through the closed-loop control of the generator speed and the closed-loop control of the engine torque. When the range extender needs to be started, the target speed command is sent to the generator. After the generator drives the engine to reach the target speed, the engine injects fuel and ignites to complete the start. However, the inventors of the present invention have found in their research that during the start-up process, since the...

Claims

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Application Information

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IPC IPC(8): B60L15/20B60L50/62
CPCB60L15/20B60L2240/421B60L2240/423B60L2240/429B60L50/62Y02T10/62Y02T10/70Y02T10/72
Inventor 赖长禄李沛东
Owner DONGFENG MOTOR CO LTD
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