Determining the characteristics of control valve in a common rail injection system of a combustion engine

In the work an attempt was made to replace the conventional system of controlling the dose and angle of advance of fuel injection by an electronically controlled system, which was implemented by attaching a fuel container to the conventional high-pressure fuel system, and an electronically controlled, electro-hydraulic fuel-dosage valve. It was assumed that by controlling the current impulse of the electro-hydraulic valve it would be possible to model the dose of fuel injected into the combustion chamber and to control injection time. There has been presented a method of determining the force indispensable for shifting the armature and slide of the control valve and the flow of fuel through the valve at the slide’s „bottom – top” reverse movement.