Daf Trucks N.v.

Jasper Den Dopper

A combustion engine comprises a suction valve system for discharging blow-by gas from the crankcase into an air inlet channel for the cylinders. The suction valve system is driven by an electromotor which is connected to a power source. The system comprises a rev counter which measures the rpm of the suction valve system, as well as a control unit which is connected to the power source, the rev counter and the engine management system. The control unit can set predefined engine conditions as well as the power flowing to the suction valve system to have this system rotate at a predefined speed. The value of the set power is a measurement for the blow-by. In lieu of regulating the power flowing to the suction valve system, the control unit can also set the power flowing to the suction valve system to a predefined value. The rev counter then measures the rpm of the suction valve system, which is a measurement for the blow-by.

System and method for monitoring blow-by in a combustion engine

A disc for a disc stack separator for a breathing system of a crankcase space of a combustion engine of a vehicle has an annular conical section and a central part located therein and having a plurality of openings. The conical section is provided on one side with ribs which are curved from the inner periphery of the conical section to the outer circumference of the conical section.

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Hooge Zwaluwe, Netherlands

Jasper Den Dopper