Abstract: A mounting fixture for an engine knock sensor is provided. The fixture includes a base and a support member. The support member is joined to the base with a press fit joint. The base includes an aperture and the support member is inserted in the aperture. The support member can be a bolt or a sleeve. The invention can also include a lip, associated with the support member for retaining a spring washer. The spring washer can be deflected between the support member and a knock sensor component for pressing the knock sensor component against the base.

Abstract: A method and apparatus for converting a sensor designed for use in an open environment to a sensor for use in a closed environment where it is desirable to retain the fluids within the closed environment. The method comprises inserting an elongated portion of the sensor into a spacing member, the elongated portion has a first sensing means being configured to sense movement of a movable item in the closed environment; positioning an O-ring on the elongated portion adjacent to the spacer; and securing the location of the O-ring by placing a retaining member onto the elongated portion after the O-ring has been inserted thereon. The apparatus comprises: a spacing member; an O-ring; and a retaining ring.

Abstract: A mounting fixture for an engine knock sensor is provided. The fixture includes a base and a support member. The support member is joined to the base with a press fit joint. The base includes an aperture and the support member is inserted in the aperture. The support member can be a bolt or a sleeve. The invention can also include a lip, associated with the support member for retaining a spring washer. The spring washer can be deflected between the support member and a knock sensor component for pressing the knock sensor component against the base.

Abstract: A threadless knock sensor (10, 50) includes a sleeve (12, 52) around which a transducer (24, 64) and a load washer (30, 70) are disposed. A frusto-conical disk spring (34, 78) is installed in compression around the sleeve (12, 52) above the transducer (24, 64). The sleeve (12, 52) includes threadless means for holding the disk spring (34, 78) in compression.

Abstract: A vehicle solenoid valve includes a coil case with a plunger housing disposed therein. The plunger housing establishes a first fluid communication path and a second fluid communication path. Reciprocably disposed within the plunger housing is a plunger. The plunger is movable between a de-energized configuration wherein fluid communication through the first fluid communication path is permitted and fluid communication through the second fluid communication path is blocked, an energized configuration, wherein fluid communication through the first fluid communication path is blocked and fluid communication through the second fluid communication path is permitted, and a pressure relief configuration, wherein, while the valve is energized, fluid pressure on the plunger surpasses a predetermined pressure level to overcome an opposing magnetic force on the plunger and permit fluid communication through the first fluid communication path.

Abstract: A vehicle braking system has a self-apply control which is effective to control the vehicle wheels under braking situations, traction control situations and chassis control situations. The self-apply control includes an electronic control unit (ECU) to establish the operation of the brakes. A positive displacement pump is utilized to provide fluid during self-apply operation. The output pressure of the pump is controlled by a variable pressure isolation valve which is controlled by the ECU to establish the maximum pressure required during each situation such that excess fluid pressure is not generated at the pump. the isolation valve has a stepped diameter bore in which a valve spool is disposed. The valve spool and the bore cooperate to form a unique dampening structure. The valve land and the bore wall form a flow restriction to and from a dampening chamber formed by the bore step and the valve land.