Driving wheel surface output specified power loading detection method

Abstract

The invention discloses a driving wheel surface output specified power loading detection method. Under the rated power speed Ve or maximum torque speed Vm of a vehicle on a chassis power tester of the vehicle, the driving wheel surface output specified power deltae*Pe or deltam*Pm in the standard environment state is converted into a corresponding driving force Fe or Fm in a detected environment state, and after the corresponding driving force is balanced with the system resistance of frame resistance, wheel cylinder frictional resistance and loading force of a power absorption device, the power or exhaust emission or fuel consumption is detected under the working condition of stable speed, so that the unity and the comparability of detection of different vehicles assembled with the same engine are improved.

Description

technical field [0001] The detection method of the specified power output on the surface of the driving wheel is that the vehicle is on the chassis dynamometer, and the driving force corresponding to the specified power output on the surface of the driving wheel is balanced with the force of the stand resistance, the friction resistance of the wheel roller, and the loading resistance of the power absorbing device. The invention relates to a method for detecting power performance, exhaust emission or fuel consumption of a vehicle speed, belonging to the technical field of automobile performance detection. Background technique [0002] Existing technology "Prescribed wheel edge power detection method", Chinese invention patent, patent number: ZL201210110890.2, the so-called automobile specified wheel edge power does not include the friction power of the wheel roller, because the friction resistance between the wheel and the roller is related to the wheel weight (or The greater...

AI Technical Summary

Problems solved by technology

[0002] Existing technology "Prescribed wheel edge power detection method", Chinese invention patent, patent number: ZL201210110890.2, the so-called automobile specified wheel edge power does not include the friction power of the wheel roller, because the friction resistance between the wheel and the roller is related to the wheel weight (or The greater the wheel weight, the greater the friction resistance, and the friction resistance is also proportional to the vehicle speed. The higher the vehicle speed, the greater the friction resistance. The drive shafts of passenger cars, vans, and fender trucks equipped with the same type of engine There is a big difference between the weight and the detected vehicle speed, and the uniformity and comparability of the detection of power, exhaust emissions or fuel consumption at the same specified wheel side are poor

Moreover, this method is only suitable for the detection of the rated power vehicle speed point, not for the detection of the maximum torque vehicle speed point, and it is only suitable for the detection of diesel vehicles, not for the detection of gasoline vehicles.