Shaft leakage arresting system for a gas management valve

A gas management pintle valve having a system for preventing pintle shaft leakage of gas from the body of the valve into the actuator thereof, comprising:

• a) a valve body having a chamber having a first port defining a valve seat, a bore opposite said first port, and an axial shaft bearing disposed in said bore;
• b) a valve head disposed in said chamber for mating with said valve seat to open and close said first port;
• c) a first portion of a pintle shaft connected at a first end to said valve head, extending through said bearing, and terminating at a second end;
• d) a gas arrestor disposed on said first portion of said pintle shaft near said second end;
• and
• e) a solenoid actuator attached to said valve body and having a second portion of the pintle shaft disposed within and extending from said actuator and being axially operative by said actuator against said second end of said first pintle shaft portion to axially displace said first shaft portion to open and close said valve.

An internal combustion engine, comprising;

• a) an intake manifold;
• b) an exhaust manifold;
• and
• c) an exhaust gas recirculation valve connected to controllably pass exhaust gas from said exhaust manifold to said intake manifold, said valve including
• i) a valve body having a chamber having a first port defining a valve seat, a bore opposite said first port, and an axial shaft bearing disposed in said bore;
• ii) a valve head disposed in said chamber for mating with said valve seat to open and close said first port;
• iii) a first portion of a pintle shaft connected at a first end to said valve head, extending through said bearing, and terminating at a second end;
• iv) a gas arrestor disposed on said first portion of said pintle shaft near said second end;
• and
• v) a solenoid actuator attached to said valve body and having a second portion of a pintle shaft disposed within and extending from said actuator and being axially operative by said actuator against said second end of said first pintle shaft portion to axially displace said first shaft portion to open and close said valve.