Why does the brake tester motor suddenly stop working?
The ratio of the inspected tire speed (third roller speed) decrease is called "slip rate". The working principle is as follows: the tires of the inspected vehicle drive the third rollers to rotate, so as to obtain the real-time speed of the tires. When the inspected vehicle is braked, the [...]
What does new energy vehicle testing include in Europe?
In Europe, CITA (International Motor Vehicle Inspection Committee) commissioned the Federal Highway Research Institute (Germany) to carry out a project called "Necessity Analysis of Electric Vehicle Safety Cycle Inspection", and the latter submitted a summary report to CITA in May 2013, for electric vehicles and hybrid vehicles, the annual inspection [...]
What does new energy vehicle testing include in China?
According to the safety requirements for electric vehicles announced by the State Administration for Market Regulation and the National Standardization Administration GB 18384-2020, the annual inspection items for electric vehicles in China generally include the following aspects: 1. Vehicle Inspection Dynamic performance: maximum speed, climbing performance, acceleration performance, etc. Economic [...]
How to test exhaust of diesel vehicles?
In the previous articles, we introduced Why vehicles need to detect exhaust? and How to test the exhaust of gasoline vehicles? while how to test diesel vehicles exhaust? 1、Free acceleration method （1）Filter-Type Smokemeters Mode：When the diesel engine is at idle speed, quickly step the accelerator to the bottom for 4 seconds [...]
How to test the exhaust of gasoline vehicles?
As we mentioned in our last article (Why vehicles need to detect exhaust? ), based on the different fuel properties of the engine, Traditional Fuel Vehicles are divided into PIEV (Positive Ignition Engine Vehicles) and CIEV (Compression Ignition Engine Vehicles). Gasoline powered vehicles, liquefied petroleum gas (LPG) vehicles, natural gas (NG) [...]
Why vehicles need to detect exhaust?
As the global temperature continues to rise, the environmental state is also deteriorating. The main factor leading to global warming is carbon emission. While motor vehicle emissions contains CO (carbon monoxide), CO2 (carbon dioxide), HC (hydrocarbons), NOx (nitrogen oxides) and carbon particles. Therefore, the detection of vehicle emissions is also [...]