Novel automobile emission test road load system

Abstract

The invention discloses a novel automobile emission test road load system. The road load system comprises a first roller set composed of two front rollers connected in series, and a second roller setcomposed of two rear rollers connected in series, and the first roller set and the second roller set are arranged side by side; the first roller set is connected with a motor through a first coupler,a force sensor is arranged on one side of the motor, and a synchronous belt mechanism is arranged on an output shaft of the motor and simultaneously drives the first roller set and the second roller set to move. In the road load system, the motor is adopted for replacing an original eddy current dynamometer, the vehicle simulation inertia can be compensated for in two directions, the equipment mechanism is simplified, the response speed is high, and the simulation precision is high; the first roller set and the second roller set are arranged in parallel, and compared with a traditional seriesconnection mode, the arrangement mode can effectively increase the response speed; the force sensor is adopted for indirectly measuring the system torque; in combination with the arrangement mode, theequipment is shorter, the cost is lower, and promotion is easier.

Description

technical field [0001] The invention relates to the field of motor vehicle chassis dynamometer equipment, in particular to a novel vehicle emission test road load system. Background technique [0002] Due to the increasingly serious environmental pollution situation in the country, the State Environmental Protection Administration will issue more stringent regulations on vehicle exhaust emissions. Vehicle emissions durability testing can be performed on track, road or chassis dynamometers. However, there are two problems on the runway and road: 1) the test cannot be strictly followed the requirements of the test conditions; 2) safety issues cannot be guaranteed during the test. Carrying it out on a chassis dynamometer can not only solve the above two problems, but also be more conducive to large-scale promotion. However, the current emission dynamometers are either backward in technology or cannot meet current needs. [0003] Chassis dynamometers currently include chassis ...

AI Technical Summary

Problems solved by technology

However, there are two problems on the runway and road: 1) The test cannot be strictly followed the requirements of the test conditions; 2) During the test, safety issues cannot be guaranteed

Chassis dynamometers for laboratories are expensive, and usually use a 48-inch or larger single drum, which is not conducive to widespread use, such as vehicle inspection institutes or vehicle factory inspections

The simple chassis dynamometer used in the workshop usually uses the eddy current dynamometer + flywheel mode to simulate the inertia of the vehicle, with a diameter of about 218mm and double drums, slow response speed, and large error in detection data

Images