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A hybrid heavy truck shutdown control method

A control method and hybrid technology, applied in hybrid vehicles, motor vehicles, transportation and packaging, etc., can solve the problems of high noise and long transmission time, and achieve the effect of reducing fuel consumption and improving dynamic performance.

Active Publication Date: 2021-07-06
DONGFENG COMML VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present application provides a shutdown control method for hybrid heavy trucks, which can solve the problems in the prior art that the gearbox is prone to long duration and loud noise when the engine is turned off until the engine flywheel is completely stopped

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  • A hybrid heavy truck shutdown control method
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Embodiment Construction

[0024] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.

[0025] The embodiment of the present application provides a shutdown control method for a hybrid heavy truck, which can solve the problems in the prior art that the gearbox is prone to long duration and loud noise when the engine is turned off until the engine flywheel is completely stopped.

[0026] figure 1 It is a flow chart of a hy...

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Abstract

The invention discloses a shutdown control method for a hybrid heavy-duty truck, which relates to the technical field of new energy heavy-duty trucks. The control method includes the following steps: S1: acquiring rotational speed information of an engine after the vehicle is stopped; S2: judging whether the rotational speed of the engine is greater than a second fixed value V2, if yes, make the ISG motor enter the energy recovery mode, if not, end; S3: when the ISG motor enters the energy recovery mode, judge whether the speed of the ISG motor is less than the third fixed value V3, if so, make the ISG motor exit the energy recovery mode mode, if not, jump to step S2. The control method can solve the problems of long duration and high noise in the gearbox of the hybrid heavy truck in the prior art when the engine is turned off until the engine flywheel is completely stopped.

Description

technical field [0001] The present application relates to the technical field of new energy heavy trucks, in particular to a shutdown control method for hybrid heavy trucks. Background technique [0002] With the rapid growth of high-horsepower tractors in the industry, environmental protection upgrades and the needs of users to reduce vehicle costs, hybrid tractors have achieved rapid development due to their advantages in reducing fuel consumption and improving power performance. [0003] At present, the hybrid power system configuration in the heavy truck industry generally adopts the P1 and P2 structures, and its ISG can realize the intervening torque increase when the vehicle needs a large torque, and energy recovery under braking conditions. The P1 structure is that the motor is placed in the position of the original flywheel before the rear clutch of the engine; the P2 structure is that the motor is placed in front of the gearbox after the clutch. [0004] Chinese in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W30/18B60W20/00
CPCB60W20/00B60W30/18127B60W2710/0644B60W2710/083
Inventor 廖宜剑李朝富张常武何秀校李国盛蔚连浩敬丹青汤用张光哲赵峰
Owner DONGFENG COMML VEHICLE CO LTD