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Testing device and method for starting neutral position protection of engine

A technology of engine starting and testing equipment, which is applied in the direction of engine control, machine/engine, mechanical equipment, etc., can solve problems such as high cost and safety accidents, achieve high safety, avoid purchase costs, and avoid safety problems.

Pending Publication Date: 2021-12-03
DONGFENG COMML VEHICLE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, such a test method is not only costly, but also has a certain test risk, which is likely to cause safety accidents

Method used

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  • Testing device and method for starting neutral position protection of engine
  • Testing device and method for starting neutral position protection of engine

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Embodiment Construction

[0035] 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.

[0036] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0037] The principle of EECU's engine start neutral protection function is: EECU checks the current state of the vehicle. The inspection process is divided into two parts, namely, the initial condition c...

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Abstract

The invention relates to the technical field of EECU testing, in particular to a testing device and method for starting neutral position protection of an engine. The testing device comprises a gearbox signal simulation circuit, a starting power-on signal simulation circuit and a controlled simulation engine assembly. The gearbox signal simulation circuit is used for generating a gear signal and inputting the gear signal into an EECU; the starting power-on signal simulation circuit is used for generating a starting power-on signal and inputting the starting power-on signal into the EECU; and the controlled simulation engine assembly is used for acquiring a control signal generated by the EECU according to the gear signal and the starting power-on signal, and controlling whether the controlled simulation engine assembly is started or not according to the control signal so as to judge whether the function of starting neutral position protection of the engine of the EECU is effective or not. The problems that in the prior art, adopted testing equipment is a real testing vehicle, the starting operation is executed in a non-neutral-position state, the mode of observing whether an engine is normally started or not is high in cost, testing risks exist, and safety accidents are likely to be caused can be solved.

Description

technical field [0001] The invention relates to the technical field of EECU testing, in particular to a testing device and method for engine starting neutral gear protection. Background technique [0002] Engine neutral start protection means that the engine will not turn when the start operation is performed in a non-neutral state. Only when the engine is in neutral, the engine will turn when the start operation is performed to ensure the safety of the vehicle when starting. EECU (Engine Electronic Control Unit) is an important part of the engine neutral start protection function for the vehicle inspection process, that is, when the vehicle is in a non-neutral state, in order to prevent the vehicle from driving forward suddenly and protect the driver's personal safety, at this time, EECU It is forbidden to send the activation signal of the starting relay to realize the starting neutral protection function. [0003] For the engine start neutral protection function test, the...

Claims

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Application Information

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IPC IPC(8): F02D41/06F02D45/00G06F30/20
CPCF02D41/062F02D45/00G06F30/20Y02T10/40
Inventor 李栋文龙祥蔡西徐丹刘振华赵毅吕婷婷王磊周杰敏张衡
Owner DONGFENG COMML VEHICLE CO LTD
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