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Engine transient air inflow method, device and system

A technology of engine and engine speed, applied in engine control, machine/engine, electrical control, etc., can solve problems such as engine shortage

Active Publication Date: 2020-01-07
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method, device and system for engine transient air intake to realize the transient air intake responsiveness of the engine in various working conditions without adding sensors and other devices, and without changing the mechanical structure of the engine, it solves the problem of The problem of insufficient engine power improves the reliability of the engine

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  • Engine transient air inflow method, device and system
  • Engine transient air inflow method, device and system

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Embodiment Construction

[0040] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0041] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and not necessarily Used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate ci...

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Abstract

The invention provides an engine transient air inflow method, device and system. The method comprises the steps of obtaining working condition value of the rotating speed, the torque and throttle valve front and back pressure parameters of an engine; according to the working condition value of the rotating speed, the torque and the throttle valve front and back pressure parameters of the engine, judging the working condition state type of the engine; according to the working condition state type, adjusting the torque of the engine or configuration value of the closed-loop control feedforward duty ratio of a waste gas bypass-valve to adjust the transient air inflow of the engine; and transient air inflow responsiveness of various working conditions of the engine can be achieved, devices like a sensor do not need to be added, on the premise of not changing the engine mechanical structure, engine power deficiency is solved, and engine work reliability is improved.

Description

technical field [0001] The invention relates to the technical field of vehicle engines, in particular to a method, device and system for transient air intake of an engine. Background technique [0002] Gas vehicles, also known as natural gas vehicles, are mainly divided into liquefied petroleum gas vehicles and compressed natural gas vehicles. Gas vehicles mainly use natural gas as fuel. Compared with gasoline vehicles, its CO emissions are reduced by more than 90%, hydrocarbon emissions are reduced by more than 70%, and nitrogen oxide emissions are reduced by more than 35%. It is a relatively practical low-emission vehicle. [0003] The engine air intake system includes air filters, pipelines, mufflers, air intake control components, intake manifolds, intake valve mechanisms, etc.; the air flows into the air filter through the bleed air pipe to filter out impurities, and then flows through the air flow It enters the intake manifold through the intake hose, mixes with fuel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/00F02D41/14
CPCF02D41/0002F02D41/1401F02D41/1475F02D2041/141F02D2200/1002F02D2200/101F02D2200/04
Inventor 曹石秦涛魏倩雯武迎迎孙龙洋
Owner WEICHAI POWER CO LTD
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