Quick wheel rim power scanning and exhaust determining method

A wheel power and emission testing technology, which is applied in the direction of measuring the traction/propulsion power of the vehicle, measuring devices, instruments, etc., can solve the problems of the tested vehicle bumping, the influence of the safety and reliability test, and the impact on the service life of the engine, so as to ensure the vehicle Work smoothly, the detection results are authentic and reliable, and the effect of improving detection safety

Inactive Publication Date: 2004-02-04
DRIVEWAY SHANDONG DETECTION TECH
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AI Technical Summary

Problems solved by technology

[0002] During the smoke emission test process of diesel vehicles under loading and deceleration conditions, wheel power scanning and smoke test are the two most important processes. During these two processes, the engine is always under full load. , the duration is generally long, the tested vehicle has violent bumps, and even drives out of the chassis dynamometer, which hinders the normal progress of the test and has a great impact on the safety and reliability of the test; at the same time, the engine overheats rapidly, the coolant overflows, and even splashes , affect the service life of the engine, the driving operator has a sense of insecurity about it, and the car owner has an aversion to it, which affects the implementation of the smoke emission detection system under loading and deceleration conditions

Method used

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  • Quick wheel rim power scanning and exhaust determining method
  • Quick wheel rim power scanning and exhaust determining method

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Embodiment Construction

[0010] exist figure 1 In the test vehicle, drive the chassis dynamometer, carry out vehicle pre-inspection and input the information of the tested vehicle, set the wheel power with a small load when the vehicle speed is 70km / h in a linear relationship, and set The ratio of the drum speed to the actual maximum power point corresponding to the vehicle speed, and automatically determine whether the capacity of the chassis dynamometer can meet the test requirements. If the capacity of the chassis dynamometer can meet the test requirements, start wheel power scanning, otherwise the tested vehicle Exit the test; use the torque adjustment method to scan the wheel power, record the maximum wheel power and its corresponding vehicle speed; when the ratio of the wheel power scan to the drum speed and the corresponding vehicle speed of the maximum power point obtained by scanning reaches the set value, the end During the power scanning process, it automatically switches to the smoke test ...

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Abstract

A testing method used to test smoke discharge at working condition of diesel oil vehicle speeding up and down can realize quick hub power scanning by setting reasonable torque adjusting step size and stable time speed. Switching to smoke testing boundary surface, smoke discharge text of speed point corresponding to 100%, 90% and 80% maximum power can be quickly carried on by setting reasonable adjusting speed rate and stable time of speed. No operator is required at test apparation, but accuracy test result on standard requirement can be obtained by the method.

Description

Technical field [0001] The invention relates to a method for fast wheelside power scanning and smoke testing, in particular to a method for fast wheelside power scanning and smoke testing of a vehicle under inspection in the diesel vehicle loading and deceleration working condition smoke emission test. Background technique [0002] During the smoke emission test process of diesel vehicles under loading and deceleration conditions, wheel power scanning and smoke test are the two most important processes. During these two processes, the engine is always under full load. , the duration is generally long, the tested vehicle has violent bumps, and even drives out of the chassis dynamometer, which hinders the normal progress of the test and has a great impact on the safety and reliability of the test; at the same time, the engine overheats rapidly, the coolant overflows, and even splashes , affecting the service life of the engine, the driving operator has a sense of insecurity, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D21/02G01L5/13G01N21/00
Inventor 刘伯年齐志权胡剑威马岳峰
Owner DRIVEWAY SHANDONG DETECTION TECH
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