Abstract: A three plenum air distribution manifold for intake air to internal combustion engine with long, narrow runners leading from first and second spaced side plenums for delivery of air and recirculating exhaust gases into corresponding combustion chambers of the engine. One end of the spaced side plenums are connected by an acoustically balanced cross over passage selectively closed by a manifold tuning valve for improving engine output torque during low engine speed. A third plenum is positioned intermediate the two side plenums to communicate with the combustion chambers in bypass relation to the side plenums thereby directly supplying air to the combustion chambers through short runners which are selectively opened by valves to optimize engine torque over a higher range of engine speeds. The manifold tuning valve and short runner valves are controlled by an onboard electronic controller responsive to signals from the engine corresponding to parameters such as engine speed.

Abstract: A valve spool (70) for an oil pump assembly (10) that includes a pilot pressure relief valve (80) to provide pilot pressure relief that increases the stability of the pump assembly (10) and eliminates the delay between the change in the discharge pressure and the associated response to the pilot pressure. The valve spool (70) operates in response to the pilot pressure to increase or decrease the pump discharge pressure during vehicle operation. A chamber (72) within the valve spool (70) is in fluid communication with the discharge flow and pressure at one end and the pilot pressure at the other end. When the pilot pressure exceeds the discharge pressure, the relief valve (80) opens, allowing the discharge pressure and the pilot pressure to equalize.

Abstract: A method for actuating an onboard refueling vapor recovery (ORVR) valve to selectively enable passage of fuel vapor from a fuel tank to a collection canister for the fuel vapor. The method includes determining whether a filling event is occurring and determining a fuel level within the fuel tank. The ORVR valve is selectively opened and closed in connection with whether a fueling event occurs and whether the fuel tank is full.

Abstract: A lubrication system is provided, including a pressure control valve for regulating oil pressure in an internal combustion engine of a motor vehicle. An oil pump for circulating oil through the lubrication system is connected in flow communication with an engine lubrication circuit and a sump. A control valve in the oil pump is slidably movable in response to a control oil pressure. As oil pressure increases, the control valve functions to recirculate some of the oil back into the oil pump. By recirculating the oil, the control valve controls the flow of oil from the oil pump, and thereby regulating oil pressure in the lubrication system. During a cold engine start, the pressure control valve is actuated using a combined oil pressure, where a check valve is used to blend a first pressure prevailing at the outlet of said oil pump and a second pressure prevailing at or near the end of the lubrication circuit and.

Abstract: An exterior mirror for a motor vehicle has a housing received within a recess in a vehicle body. A mirror support is mounted in the housing for angular movement between a deployed position and a stowed position in which the mirror support is contained within the housing.