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On-line recognition device and method of diesel engine power performance

A technology of power performance and diesel engine, applied in the direction of machine/engine, mechanical equipment, engine control, etc., can solve the problems of difficulty in output torque, unable to quantitatively identify the power performance of diesel engine, etc., to achieve the effect of simple structure, improved maintenance quality and efficiency

Inactive Publication Date: 2014-08-06
CHINA NORTH ENGINE INST TIANJIN
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AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problem that it is difficult to obtain the output torque online of the diesel engine and the power performance of the diesel engine cannot be quantitatively identified, the invention provides an online identification method for the power performance of the diesel engine

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  • On-line recognition device and method of diesel engine power performance

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Embodiment Construction

[0013] An on-line identification device for the power performance of a diesel engine, comprising a vehicle speed sensor, an engine speed sensor, a diesel engine throttle gear rod position sensor, an ECU and an alarm; the vehicle speed sensor, the engine speed sensor and the diesel engine throttle gear rod position sensor are installed on the diesel engine, and They are respectively connected to the ECU; the ECU stores an environment correction Map and a standard torque Map, and is characterized in that: the ECU calculates the driving force of the whole vehicle according to the vehicle speed, the engine speed and the position data of the accelerator gear rod, and determines the driving force according to the driving force. The actual output torque of the diesel engine; then correct the actual output torque according to the environmental correction Map to obtain the corrected torque; compare the corrected torque with the standard torque Map to see if the corrected torque meets the...

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Abstract

The invention discloses an on-line recognition device and method of diesel engine power performance. The on-line recognition device comprises a vehicle speed sensor, an engine speed sensor, a diesel engine accelerograph rack position sensor, an ECU and an alarm device. The vehicle speed sensor, the engine speed sensor and the diesel engine accelerograph rack position sensor are connected with the ECU respectively. The circumstance revising Map and the standard torque Map are stored in the ECU. The ECU compares the revised torque with the standard torque Map, and if revised torque does not meet the requirement of the standard torque Map, the alarm device is notified to conduct alarm prompt. The on-line recognition device is simple in structure, the vehicle driving force is worked out by collecting the revolving speed, the accelerograph position and the speed of a vehicle, the diesel engine output torque is further obtained, the diesel engine power performance can be recognized in a quantitative mode through the comparison with the standard torque in the ECU, the diesel engine output torque can be measured directly under the condition of vehicle loading, the diesel engine state can be monitored, and reliability of diesel engine operation is improved.

Description

technical field [0001] The invention belongs to the technical field of diesel engines, and in particular relates to an online identification method for the power performance of a diesel engine. Background technique [0002] With the continuous improvement of diesel engine power requirements and increasingly stringent emission regulations, the structure of diesel engines is becoming more and more complex, and the probability of diesel engine failure is increasing, making maintenance more and more difficult, directly affecting vehicle guarantee and use. Therefore, in order to minimize the failure of diesel engines and ensure the integrity of equipment, higher technical requirements are put forward for the condition monitoring of diesel engines. [0003] Crankshaft output torque is one of the important parameters to characterize the technical condition of diesel engine. With the increase of service life, the output torque of the crankshaft will decrease under the same oil quan...

Claims

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Application Information

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IPC IPC(8): F02D28/00
Inventor 刘艳利李耀宗赵春生李亚芬黄树和
Owner CHINA NORTH ENGINE INST TIANJIN
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