Who knows how big the valve clearance of Yuchai 6L engine is?

Yuchai's engines are all equipped with engine instructions, which are all mentioned in the instructions. If there is no explanation, it can be adjusted according to the intake of 0.3mm and the exhaust of 0.4 mm, and the valve clearance is briefly described:

1, the valve clearance is set to ensure the normal operation of the valve train of the internal combustion engine, because the valve train is in a high-speed state and the temperature is high when working;

2. Therefore, the valve tappet, valve stem and other parts will be stretched after being heated, and then the valve will be pushed open completely automatically, which makes the valve and valve seat not closed tightly, resulting in air leakage;

3. In order to avoid this phenomenon, when designing the valve train, there is a certain gap between the end of the intake and exhaust valve rod and the adjusting screw on the tappet (or rocker arm), which is the valve clearance.

Note: In 20 10, the sales volume of Yuchai machinery exceeded 550,000 units, and Yuchai heavy-duty engine was the main highlight of its sales growth. 20 1 1 year, Yuchai heavy-duty engine will also be the main force of Yuchai machinery sales growth.

Yuchai Heavy Machinery mainly includes nine series products: YC6A, YC6L, YC6M, YC6MK, YC6T, YC6C and YC8C, among which YC6T, YC6C and YC8C are mainly used in the fields of ships and generator sets. The four series products of YC6A, YC6L, YC6M and YC6MK are suitable for buses, trucks, construction machinery, truck cranes, ships and generator sets.

The advantages of Yuchai heavy machinery resource integration are particularly obvious in the truck sector. YC6A has a displacement of 7.2 liters and a power coverage of 220-260 horsepower. It has obvious advantages of light weight, low fuel consumption, low car purchase cost, low operation cost and low maintenance cost when applied to lightweight vehicles with quasi-heavy trucks.

With a displacement of 8.4 liters and a power coverage of 260-350 HP, YC6L is the first engine with lightweight design technology in China. When applied to heavy trucks and light vehicles, it has the advantages of light weight and low fuel consumption.

YC6M is a new benchmark for 10L displacement heavy-duty engine, with power covering 280-375 horsepower. It is suitable for heavy dump trucks, cement mixers and high-speed and efficient tractors with high torque requirements, and can meet the development needs of modern heavy trucks with small rear axle speed ratio and large tire diameter.