FIELD: proposed method is used for testing forced injection internal combustion engines provided with electric control of fuel delivery without external loading of engine.
SUBSTANCE: proposed method includes measurement of number of free racing cycles during definite period of time. Engine operating at minimum idling revolutions is shifted to free racing mode by abrupt motion of fuel delivery control member to maximum position; fuel delivery is discontinued periodically when high limit crankshaft rotational speed is attained. As soon as rotational speed of engine crankshaft reduces to low limit, fuel delivery is cut-in. The magnitudes thus obtained are compared with standard ones for estimation of state of engine.
EFFECT: enhanced accuracy of testing.
1 dwg
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