초록 ▼

An improvement for diesel engine emergency shutoff devices and method for intake air-flow shutoff valves. The device includes tubing connecting the engine's exhaust manifold with the intake manifold at a location down stream from the shutoff valve with a check valve which prevents exhaust gas from e

An improvement for diesel engine emergency shutoff devices and method for intake air-flow shutoff valves. The device includes tubing connecting the engine's exhaust manifold with the intake manifold at a location down stream from the shutoff valve with a check valve which prevents exhaust gas from entering the intake manifold until vacuum within the intake manifold reaches a desired level. When the emergency shutoff device operates, intake manifold vacuum opens the check valve and allows oxygen deficient exhaust gas to enter the intake manifold preventing a sudden damaging vacuum while also allowing the shutoff device to completely shutdown the engine.

대표청구항 ▼

[ I claim:] [1.] An improvement for diesel engine air induction shutdown devices wherein the diesel engine is equipped with an exhaust manifold and an air intake manifold wherein the shutdown device is equipped with a valve member which blocks the flow of air into the air intake manifold when the en

[ I claim:] [1.] An improvement for diesel engine air induction shutdown devices wherein the diesel engine is equipped with an exhaust manifold and an air intake manifold wherein the shutdown device is equipped with a valve member which blocks the flow of air into the air intake manifold when the engine overrevs, the improvement comprising:a) a means including a tube for delivering exhaust gases from the exhaust manifold to the intake manifold at a point on the intake manifold between the shutdown device and the engine,b) a means for preventing the flow of exhaust gas from the exhaust manifold to the intake manifold through the tube until a desired vacuum level exist in the intake manifold.