Quick wheel rim power scanning and exhaust determining method

A wheel-side power and emission testing technology, applied in the measurement of vehicle traction/propulsion power, measuring devices, instruments, etc., can solve problems such as splashing, safety and reliability test effects, and test vehicle bumps, and reduce full load conditions. Time, test results are authentic and reliable, and the effect of improving test security

Inactive Publication Date: 2006-03-01
DRIVEWAY SHANDONG DETECTION TECH
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Problems solved by technology

At present, when these two process tests are carried out in China, the duration is generally long, and 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, which affect the service life of the engine. The driving operator feels unsafe about this, and the car owner feels disgusted by 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

[0019] The technical solution adopted in the present invention is: use the torque adjustment and speed adjustment of the MAHA chassis dynamometer to control the wheel side power scanning and the smoke test process respectively, and firstly use the set torque adjustment step and speed stabilization time. Wheel side power scan, after the wheel side power scan, switch to the smoke test interface and use the speed adjustment method to perform three-point smoke test.

[0020] refer to figure 1 , the vehicle under test drives on the chassis dynamometer, in step 1, conduct vehicle pre-inspection and enter the information of the vehicle under test, in step 2, set a small load that has a linear relationship with the vehicle speed and the vehicle speed is 70 km / h Wheel power, and the ratio of the drum speed at the end of the power scan to the vehicle speed corresponding to the actual maximum power point, and determine whether the capacity of the chassis dynamometer can meet the test req...

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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 measuring device and a measuring method, in particular to a fast wheel power scanning and smoke testing method for a diesel vehicle. Background technique [0002] During the smoke emission test of diesel vehicles under loading and deceleration conditions, wheel power scanning and smoke testing are the two most important processes, and the engine is always under full load during these two processes. At present, when these two process tests are carried out in China, the duration is generally long, and 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, which affect the service life of the engine. The driving operator feels insecure about this, and the car owner feels disgusted by it, which affect...

Claims

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Application Information

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Patent Type & Authority Patents(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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