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Engine cylinder tightness detection device

An engine cylinder and tightness detection technology, which is applied in the application of electrical devices to test fluid tightness and other directions, can solve problems such as the decrease of cylinder tightness, and achieve the effects of improving work reliability, avoiding hidden dangers and low production costs.

Inactive Publication Date: 2018-01-12
CHINA NORTH ENGINE INST TIANJIN
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Problems solved by technology

[0003] In view of this, the present invention aims to propose a device for checking the tightness of the engine cylinder to solve the problem that the decline in the tightness of the cylinder is difficult to detect in time

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Embodiment Construction

[0015] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0016] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0017] A device for checking the tightness of an engine cylinder, such as figure 1 As shown, it includes a sensor 1, a signal acquisition unit 2, a feature analysis unit 3 and a comparison unit 4, the signal acquisition unit 2 is connected to the sensor 1 signal, starts the engine (without fuel injection) process, and the signal acquisition unit 2 collects the data of the sensor 1 Information; the characteristic analysis unit 3 is connected with the signal acquisition unit 2, receives the data of the signal acquisition unit 2, and the characteristic analysis unit 3 calculates and analyzes the received data, obtains the sealing characteristic parameters of each cylinder of the engine, and...

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Abstract

The invention provides an engine cylinder tightness detection device, which comprises a sensor, a signal acquisition unit, a characteristic analysis unit, an ECU unit and a display unit, wherein the signal acquisition unit is in signal connection with the sensor, and acquires data information of the sensor in the process of starting an engine (non-oil-injecting); the characteristic analysis unit is connected with the data acquisition unit, and is used for calculating and analyzing original signal data, so as to obtain tightness characterization parameters of each cylinder of the engine; the ECU unit is connected with the characteristic analysis unit, receives data from the characteristic analysis unit compares the data with threshold data pre-stored in the ECU unit, and evaluates tightnessof each cylinder; and the display unit is connected with the ECU unit, and output and displays a detection result. The engine cylinder tightness detection device has the beneficial effects of grasping tightness states of each cylinder timely before the engine operates, avoiding the problems that the engine undergoes performance reduction and even is severely damaged due to abnormal wear of a piston ring and cylinder sleeves, and improving the reliability of a diesel engine.

Description

technical field [0001] The invention belongs to the field of engine testing, in particular to an engine cylinder sealing performance detection device. Background technique [0002] During the working process of the engine, the piston motion is high-speed reciprocating motion. Due to various reasons, abnormal wear and tear will inevitably occur between the cylinder liner, piston ring and piston, which will directly cause the performance of the engine to decline, and even cause major damage. The existing technology mainly uses oil spectrum analysis and ferrography analysis technology to detect the engine wear state. Since the metal concentration in the oil is a gradual process, the test period is long and the cost is high. In the prior art, there is a lack of fast and effective means for checking the sealing state of the cylinder, which brings hidden dangers to the safe operation of the engine and seriously affects its reliability. Contents of the invention [0003] In view...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/40
Inventor 赵春生刘艳利丁技峰曹杰
Owner CHINA NORTH ENGINE INST TIANJIN
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