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Pneumatic control system and control method of plug-in hybrid electric bus

A hybrid power and air pressure control technology, applied in the direction of brakes, brake components, vehicle components, etc., can solve the problems of affecting braking performance, safety hazards, condensate water cannot be discharged, etc., and achieve the effect of improving safety and reliability

Pending Publication Date: 2019-01-11
ZHONGTONG BUS HLDG
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Problems solved by technology

The dryer cannot be unloaded, and the condensed water adsorbed by the molecular sieve cannot be discharged, which will affect the braking performance and cause potential safety hazards

Method used

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  • Pneumatic control system and control method of plug-in hybrid electric bus
  • Pneumatic control system and control method of plug-in hybrid electric bus

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[0035] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0036] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0037] A kind of air pressure control system of plug-in hybrid electric passenger car of the present invention, ...

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Abstract

The invention discloses a pneumatic control system and control method of a plug-in hybrid electric bus. The pneumatic control system of the plug-in hybrid electric bus comprises a normally open unloading induction switch which is installed on a dryer, wherein when the dryer is unloaded, the normally open unloading induction switch is closed, and the effective unloading signal of the dryer is output and transmitted to the vehicle controller; a vehicle controller is configured to receive two air pressure values in a dual loop pneumatic brake system; the two air pressure values are compared withthe first pressure threshold value respectively, and when either air pressure value is lower than the first pressure threshold value, the engine is immediately controlled to start so as to pump air tothe pipeline; when the engine is started and the unloading signal of the dryer is valid, the two air pressure values are compared with the second pressure threshold value respectively; and when the two air pressure values are higher than the second pressure threshold value, the engine is controlled to delay the preset running time and continue to pump air for the pipeline so that the dryer is continuously unloaded and the adsorbed water of the molecular sieve is fully discharged.

Description

technical field [0001] The invention belongs to the control field of new energy passenger cars, and in particular relates to an air pressure control system and a control method of a plug-in hybrid electric passenger car. Background technique [0002] At present, the braking system of passenger cars generally adopts a double-circuit air braking system. Plug-in hybrid electric buses are generally not equipped with an electric air pump. The compressed air comes from the mechanical air pump that comes with the engine body. , During the unloading process, the condensed water adsorbed by the molecular sieve is discharged from the pipeline, so as to avoid the decrease of braking performance or failure of the brake due to freezing of the pipeline in winter. [0003] Usually, when the plug-in hybrid electric bus is running in pure electric mode, if the air pressure is lower than the set value, the vehicle controller will control the engine to start and pump up air to ensure that the...

Claims

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Application Information

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IPC IPC(8): B60T17/00
CPCB60T17/004
Inventor 赵佳黄建刚郭达张福顺吴洪亭赵浩
Owner ZHONGTONG BUS HLDG
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