Natural gas engine plateau power loss compensation control method

A technology of power loss and compensation control, applied in engine control, electrical automatic control, electrical control, etc., can solve problems such as lack of relevant corrections, large engine power loss, and insufficient power, so as to improve market recognition and competitiveness, and ensure Power and economy, the effect of meeting the application environment

Active Publication Date: 2019-01-15
WEICHAI XIGANG NEW ENERGY POWER
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Problems solved by technology

[0003] However, due to the structural difference between the natural gas engine and the diesel engine, when it is in use, the fuel injection is mainly controlled by the intake air volume. Due to the influence of the high altitude on the turbocharger capacity, it is easy to cause problems such as large engine power loss and insufficient power. Thus affecting the performance and application promotion

Method used

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  • Natural gas engine plateau power loss compensation control method

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0034] Such as figure 1 As shown, a natural gas engine plateau power loss compensation control method includes the following steps:

[0035] Step S1, obtain the atmospheric pressure value collected by the atmospheric pressure sensor; in this example, the signal collected by the atmospheric pressure sensor is read by the ECU, and ECU is (English abbreviation for Electronic Control Unit) which means electronic control unit in Chinese. After the atmospheric pressure sensor collects the real-time atmospheric pressure, it is converted into a voltage signal and transmitted to the ECU.

[0036] Step S2....

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Abstract

The invention discloses a natural gas engine plateau power loss compensation control method. The method comprises a step of determining the altitude range of engine working and obtaining an engine running state through an obtained atmospheric pressure value, a step of obtaining a real-time torque required by the engine according to an engine running state signal and obtaining a corresponding powerloss ratio according to the real-time torque and the altitude range, and a step of generating a corresponding power compensation signal according to the power loss ratio and controlling intake air pressure correction, controlling air-fuel ratio correction or/and controlling ignition advance correction according to the power compensation signal such that the lack of power of the engine is avoided.It can be seen that different ignition advance angle, air intake pressure and air-fuel ratio control is used in different environments of the engine to optimize the overall performance of the engine,the power is ensured, only the setting of a supercharger and an atmospheric pressure sensor is needed, various application environments are satisfied, and the product promotion is expanded.

Description

technical field [0001] The invention relates to the technical field of natural gas engines, in particular to a method for compensating and controlling natural gas engine plateau power loss. Background technique [0002] With the shortage of energy and people's higher and higher requirements for the performance of vehicle engines, the requirements for the economy and power of natural gas engines are getting higher and higher, and the environment in which natural gas engines operate is becoming more and more extensive. Natural gas engines are gradually being used in high-altitude areas more and more. Natural gas is mainly composed of gaseous low-molecular hydrocarbons and non-hydrocarbon gases. The combustion products are mainly carbon dioxide and water vapor. The substances produced are extremely harmful to the health of the human respiratory system. Little, almost no solid residue. Moreover, natural gas is a gas at atmospheric temperature, and its specific gravity is lighte...

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Application Information

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IPC IPC(8): F02D41/00F02D41/24F02P5/15
CPCF02D41/0007F02D41/2451F02D2200/1002F02D2200/703F02P5/1502
Inventor 周伟伟韩雨
Owner WEICHAI XIGANG NEW ENERGY POWER
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