FIELD: engine building.
SUBSTANCE: invention discloses methods and systems for detecting leaks in an engine intake manifold. In one of the examples, the method may mean closing all inlet valves of all engine cylinders during engine shutdown in response to negative pressure in the intake manifold. Method can further include indication of leakage in intake manifold in response to variation of degree of vacuum in intake manifold after closing all inlet valves of all cylinders.
EFFECT: invention discloses methods and systems for detecting leaks in an intake manifold.
20 cl, 8 dwg
