F - Mech Eng,Light,Heat,Weapons – 02 – M
Patent
F - Mech Eng,Light,Heat,Weapons
02
M
123/62
F02M 3/07 (2006.01) F16D 7/10 (2006.01) F02M 3/06 (2006.01)
Patent
CA 1318197
ABSTRACT Idle control valve (10) for use with a throttle assembly of an internal combustion engine includes a valve body (22), and a valve spool (32) mounted within the valve body (22) so as to be rotatable in opposite directions about an axis (26) common to the valve spool (32) and body (22). The valve spool (32) includes a valve port (36) defining an effective area which establishes the amount of air flow through the valve body (22) between the air inlet (28) and outlet (30) thereof. Upon rotation of the valve spool (32) by suitable drive structure (as by a DC motor (42) receiving command signals from an engine control unit (44)), the effective area of the valve port (36) will be altered thereby responsively controllably altering the amount of air flowing through the valve body (22) between its inlet (28) and outlet (30). A clutch assembly (70) precludes the transmission of torque to the valve spool (32) above a predetermined threshold level (as by the valve spool (32) reaching maximum or minimum positions) so that relative slippage occurs between the valve spool (32) and the structure (42, 46, 48) driving same.
576944
Borden Ladner Gervais Llp
Siemens Automotive L.p.
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