Trapezoidal piston and connecting rod. 1.9 TDI PD from VAG Group. Family of diesel engines with injection pump-injector

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10/05/2022
Trapezoidal piston and connecting rod. 1.9 TDI PD from VAG Group. Family of diesel engines with injection pump-injector

Trapezoidal piston and connecting rod

 

The piston hub and connecting rod lug have a trapezoidal shape. This ensures high combustion pressure in the 1.9-liter engine.

 

 

 

 

 

Compared to a conventional link in the form of a parallelogram between the piston and the connecting rod, the trapezoidal lug of the connecting rod and the piston hub have a larger contact surface area on the piston pin due to its shape.

 

 

 

 

The combustion process takes place over a larger area, and this relieves the load on the piston pin and connecting rod.

 

 

 

 

Read more about the family of diesel engines with injection pump-injector here .