What does BJ4 15B engine mean?

Beiqi Yinxiang BJ4 15B 1.5L engine is a naturally aspirated engine independently developed by imitating Toyota 5A-Fe engine technology. VVT is a continuously variable valve timing technology.

BJ4 15B means: Jing Ji (BJ), 4 cylinders (4), 1.5 displacement (15), type 2 (b). The 5A-Fe of 1.5 is the sixth generation (1987- 199 1), the seventh generation (1991-kloc-0/995), and the first generation. Toyota 5A engine with 1.5L was the most fuel-efficient and the lowest maintenance cost among the mainstream engines at that time.

Extended data

Maintenance of engine

1, remove throttling sludge.

There are many reasons for fouling at the throttle, some of which are carbon deposits formed by the exhaust gas from fuel combustion at the throttle; Then, impurities that are not filtered by the air cleaner will remain on the throttle. Too much sludge will cause air resistance and increase fuel consumption.

2. Clean the carbon deposit on the fuel injector.

Because the combustion chamber is easy to produce carbon deposit, it is difficult to start; Carbon deposition in the fuel nozzle will also lead to oil blockage, gasoline injection deformation, poor atomization, and fuel consumption will naturally increase.

For the cleaning of the combustion chamber, a special carbon remover can be used to soften the carbon deposits on the combustion chamber and the fuel nozzle and separate them from the surface of the parts, and then remove the softened carbon deposits. This method of removing carbon has a good effect. Compared with the previous direct wiping, it has the advantage of not damaging the surface of parts, and the efficiency of removing carbon has also been greatly improved.