Leakage rate detection method for internal combustion engine fuel injection valve, e.g. for vehicle diesel engine, evaluates hydrocarbon concentration in fuel stream fed through test body on application of given pressure characteristic

摘要

The method involves inserting the fuel injection valve (22) between a fuel supply device (10) and a test body (12), so that the fuel injection valve is filled with fuel and subjected to a given pressure characteristic, with measurement of the hydrocarbon concentration of the fuel stream fed through the test body, e.g. using -a flame ionization detector. An Independent claim is also included for a fuel injection valve leakage rate detection device.