G4D3CA 204DTD AJ200 Cast Crankshaft for Land Rover Discovery
It is the Jaguar engine Crankshaft. It is a very important part of the engine. It can convert the linear motion of the piston into rotary motion, and convert the gas pressure from the piston and connecting rod into torque and output it to the outside.
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Do you know what is the most expensive and most delicate single component on a car engine?
It is the Jaguar engine Crankshaft. It is a very important part of the engine. It can convert the linear motion of the piston into rotary motion, and convert the gas pressure from the piston and connecting rod into torque and output it to the outside. At the same time, it drives the transmission system of the car and the engine. Valve train and other auxiliary devices.
The force of AJ200 Crankshaft is extremely complicated. It works under the joint action of periodically changing gas pressure, reciprocating inertial force and its moment, and bears huge alternating loads of bending and torsion. At the same time, it is a slender and high-speed rotating part, so strict dynamic balance is required, and bending and twisting are not allowed to exceed a certain value.
Therefore, 204DTD crankshaft needs to be made of very high-quality materials and undergo a strict surface treatment process. Generally, 45, 40Cr, 35Mn2 and other medium carbon steel and medium carbon alloy steel are used for die forging. In recent years, more ductile iron has been used. After forging or casting, in order to improve the fatigue strength of the G4D3CA diesel engine crankshaft and eliminate stress concentration, it is also necessary to carry out shot peening on the surface of the journal, and the rounded corners must be rolled; in order to improve the surface hardness of the journal, it is also necessary to Do high-frequency quenching or nitriding treatment on the surface of the journal, and finally finish machining. The Cast Crankshaft For Land Rover Discovery treated in this way has sufficient fatigue strength and rigidity against bending and torsion, and at the same time, the journal has a sufficiently large pressure-bearing surface and wear resistance.
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