We know that many of the auto parts are gear structures, and these gears are manufactured by powder metallurgy technology. With the development of China's auto industry and the increasing requirements for energy saving and emission reduction, the application of powder metallurgy technology in the auto industry More and more, more and more metal parts will be produced by powder metallurgy technology.
1. VVT powder metallurgy parts
VVT or VCT (Variable Cam Timing System) is to adjust the phase of the engine cam through the equipped control and execution system, so that the opening and closing time of the valve changes with the change of the engine speed to improve the charging efficiency. , A system to increase engine power. The actuator of VVT or VCT system-the core components of the phaser, the sprocket, stator, rotor and end cover, are mostly made of powder metallurgy.
2. Powder metallurgy parts in oil pumps
Currently, engine oil pumps and automatic transmission oil pumps mostly use quantitative oil pumps. Quantitative oil pumps are generally external gear pumps, internal cycloidal pumps, or internal gear pumps. The gears of this type of pump are manufactured by powder metallurgy.
3. Powder metallurgy parts in brake booster vacuum pumps
For vehicles driven by diesel engines, since the engine adopts compression ignition, the same level of vacuum pressure cannot be provided at the intake manifold, so a vacuum pump must be installed to provide a vacuum source. The power of this vacuum pump is obtained directly from the engine. The power drives the powder metallurgy rotor through the powder metallurgy coupling and then drives the plastic valve disc. The rotor and the pump cavity have a certain amount of eccentricity. The rotation of the valve disc produces a vacuum. Dynamic boosting effect.
The above is about the application of powder metallurgy technology in the automobile industry. Whether in terms of weight or number of parts, the proportion of powder metallurgy gears in automobiles and motorcycles is far greater than that of powder metallurgy parts in other fields.