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Device for improving transient response of natural gas engine and response method thereof

A transient response, engine technology, applied in engine control, combustion engine, machine/engine, etc., can solve the problems of slow start and acceleration of motor vehicles, poor loading characteristics, etc., achieve optimal matching, short action time, and improve transient The effect of responsive performance

Pending Publication Date: 2018-11-16
WEICHAI XIGANG NEW ENERGY POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) The start and acceleration of motor vehicles using natural gas engines are relatively slow;
[0004] (2) Construction machinery such as excavators and loaders using natural gas engines have poor loading characteristics

Method used

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  • Device for improving transient response of natural gas engine and response method thereof
  • Device for improving transient response of natural gas engine and response method thereof

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Embodiment Construction

[0028] Below in conjunction with accompanying drawing and embodiment, further elaborate the present invention. In the following detailed description, certain exemplary embodiments of the invention are described by way of illustration only. Needless to say, those skilled in the art would realize that the described embodiments can be modified in various different ways, all without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

[0029] Such as figure 1 and figure 2 As shown, the device for improving the transient response of a natural gas engine includes an intake manifold 1 connected to the engine 4, the intake end of the intake manifold 1 is connected with a normal air supply channel, and the normal air supply channel is communicated with a A gas supply pipe, on which a gas injection valve 2 is connected in series, the gas outlet end of the...

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Abstract

The invention discloses a device for improving transient response of a natural gas engine and further discloses a response method of the device. The device comprises a gas inlet header pipe, a normalgas supplying channel, a fuel gas supplying pipe and a fuel gas spraying valve. The normal gas supplying channel further communicates with a transient response gas supplying channel. The device further comprises an accelerator position sensor used for detecting the opening degree of an accelerator pedal and a rotating speed sensor used for detecting the rotating speed of the engine. The normal gassupplying channel, the transient response gas supplying channel, the accelerator position sensor and the rotating speed sensor are connected to an electronic control unit (ECU) of the engine. Fuel gas is supplied to the engine through the normal gas supplying channel, when it is judged that the ECU needs to conduct transient response according to all detecting parameters, and the fuel gas is supplied through the transient response gas supplying channel; and meanwhile an anti-surging valve is opened to discharge air, air supplying is improved, the air inlet amount of the engine is increased quickly within a short time, and the transient response property of the engine is improved.

Description

technical field [0001] The invention relates to a device for improving the transient response of a natural gas engine, and also relates to a specific response method of the device. Background technique [0002] At present, the commonly used natural gas engines are mostly single-point injection and intake pipe mixing. Due to the combustion characteristics of natural gas, it is necessary to control the air-fuel ratio more accurately. The instantaneous multi-injection of natural gas has limited effects and cannot fully compensate for the disadvantages of transient response. Therefore, more air intake is the key to improving the transient response, but due to the influence of supercharging hysteresis, the intake air volume of the engine increases slowly. Compared with diesel engines, the transient response is generally slow. This phenomenon is particularly obvious, and the above phenomenon mainly leads to the following problems: [0003] (1) The start and acceleration of motor ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/00F02B33/44F02D9/04
CPCF02B33/44F02D9/04F02D41/0002F02D41/0027F02D2200/101F02D2200/602
Inventor 刘旭东赵红兵武泽军李德颖
Owner WEICHAI XIGANG NEW ENERGY POWER
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