Quality appraisal of scooters

Scooters, also known as lazy scooters, are a widely used means of transportation and auxiliary tools, designed to provide a convenient way to travel. In China, the definition of mobility scooter is quite broad. It can refer to cars, electric bicycles, electric scooters, two-wheeled self-balancing scooters and single-wheeled balancing scooters. The scooter
refers to in the industry generally refers to electric scooters. Electric bicycles have replaced bicycles in China and become the daily means of transportation for ordinary people. They are small in size and flexible in riding.
In the case of mobility scooter quality appraisal, Zhongke Testing can provide mobility scooter quality appraisal services.

There are roughly two types of car scooters on the market: fuel vehicles and new energy vehicles.

GB 7258-2017 Motor vehicle operation safety technical conditions
GB/T 15766.2-2016 Road motor vehicle light bulbs Performance requirements
GB 15084-2022 Motor vehicles Indirect vision devices Performance and installation requirements
GB 15742-2019 Performance requirements and test methods for motor vehicle horns
GB 11554-2008 Light distribution performance of rear fog lights for motor vehicles and trailers
GB/T 13594-2003 Performance and test methods for anti-lock braking of motor vehicles and trailers
GB/T 15766.1-2008 Road motor vehicle light bulbs Size, photoelectric performance requirements

Wu bought a mobility scooter for his father, but during use, Wu's father repeatedly pointed out to Wu that the mobility scooter had difficulty starting and stalled frequently. Wu went to check and found that it was indeed what his father said, but he could not find the reason. So I complained to the seller, but negotiations failed, and the two parties went to court.
was entrusted by the court to conduct an appraisal and analysis on "whether there are quality problems" with the mobility scooters involved in the case.
appraisal analysis results:
The appraisal analysis expert group discussed the relevant information and on-site investigation of the scooter involved and conducted a comprehensive quality and technical analysis, and made the following suggestions and conclusions:
The scooter is not equipped with a fuel pressure regulating valve, and it is difficult to supply fuel when starting. This is one of the reasons.
Second, the air-fuel ratio of the carburetor is improperly adjusted, which results in the mixture concentration being too low.
The two reasons combined will cause the scooter to be difficult to start and stall frequently.
To sum up, there are defects in the design process of this vehicle, which makes it unable to be used normally.