A method, device and system for determining a common working area of ​​an engine

An engine and working area technology, which is applied in the field of measuring the common working area of ​​the engine, can solve the problems of low measurement accuracy and slow response speed, and achieve the effect of improving accuracy and fast measurement response speed

Active Publication Date: 2016-03-30
WEICHAI POWER CO LTD
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Problems solved by technology

[0004] In view of this, the main purpose of the present invention is to provide a method, device and system for measuring the common working area of ​​the engine, so as to solve the problem of calculating the common working area of ​​the engine by measuring the pressure after boosting in the prior art, the response speed is slow, and the measurement is accurate. lower degree problem

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  • A method, device and system for determining a common working area of ​​an engine
  • A method, device and system for determining a common working area of ​​an engine

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[0044] In order to make the above objects, features and advantages of the present invention more comprehensible, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0045] A method for measuring the common working area of ​​the engine provided by the present invention is aimed at the problems in the prior art that the common working area of ​​the engine is calculated by measuring the pressure after boosting, the response speed is slow, and the measurement accuracy is low. The emission of nitrogen oxides (NOx) is calculated to calculate the actual torque of the engine, and then the common working area of ​​the engine is determined according to the actual speed and actual torque of the vehicle.

[0046] Based on the above ideas, see figure 1 Shown, the present invention measures the method for engine common work area, comprises the following steps:

[0047] Step 1...

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Abstract

The invention discloses a method for determine a common working area of an engine, which is used for obtaining the common working area of the engine quickly and accurately. The method includes the following steps: collecting the discharge capacity of nitrogen oxides and corrected parameters at different rotational speed and under different torque conditions of the engine during the rack testing of the engine; storing the corresponding relation between the rotational speed, the torque and the corrected parameters of the engine and the discharge capacity of nitrogen oxides of the engine; collecting the actual rotational speed, the actual discharge capacity of nitrogen oxides and the actual corrected parameters of the engine during the actual operation of a vehicle; then inquiring the corresponding relation between the rotational speed, the torque and the corrected parameters of the engine and the discharge capacity of nitrogen oxides of the engine to obtain the actual torque of the engine during the actual operation of the vehicle; and determining the common working area of the engine as per the actual rotational speed and the actual torque of the engine. The invention further discloses a system and a device for determining the common working area of the engine.

Description

technical field [0001] The invention relates to the technical field of automobile engines, in particular to a method, device and system for measuring the common working area of ​​an engine. Background technique [0002] At present, the society is becoming more and more aware of energy saving and emission reduction. How to reduce fuel consumption more effectively while meeting automobile exhaust emission standards and regulations poses increasingly severe challenges to automobile engine technology. Therefore, it is necessary to analyze the common working area of ​​the engine. The common working area of ​​the engine refers to the main operating conditions of the engine when matching the vehicle, that is, the working area corresponding to different speeds and torques. According to the obtained common working area, it can provide a basis for optimizing the performance of the engine, select the optimal engine configuration to determine the direction of optimization, guide the opt...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M15/00
Inventor 范振勇孙永亮王秀雷马雁
Owner WEICHAI POWER CO LTD
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