Abstract: A vehicle utilizes an internal combustion powertrain to propel front wheels and an Electric Rear Axle Drive (ERAD) to propel rear wheels. In some circumstances, a controller may need to limit motor torque in the ERAD to avoid overheating the motor, which reduces fuel efficiency. To reduce the likelihood of needing to limit motor torque, refrigerant from the vehicle air conditioning system is circulated through the motor housing. In response to commands from a controller, a valve routes the refrigerant either through the air conditioning system evaporator or through the motor housing.

Abstract: A vehicle utilizes an internal combustion powertrain to propel front wheels and an Electric Rear Axle Drive (ERAD) to propel rear wheels. In some circumstances, a controller may need to limit motor torque in the ERAD to avoid overheating the motor, which reduces fuel efficiency. To reduce the likelihood of needing to limit motor torque, refrigerant from the vehicle air conditioning system is circulated through the motor housing. In response to commands from a controller, a valve routes the refrigerant either through the air conditioning system evaporator or through the motor housing.

Abstract: A fuel system including a high pressure fuel pump with a quite fuel metering valve is disclosed. In one example, the quite fuel metering valve may be driven via a rotating motor. The fuel system may reduce engine noise and may provide improved fuel pressure control.

Abstract: A fuel system including a high pressure fuel pump with a quiet fuel metering valve is disclosed. In one example, the quiet fuel metering valve may be cam driven. The fuel system may reduce engine noise and may provide operating modes that are different from other fuel systems.

Abstract: A method for operating a fuel pump is provided. The method may include decreasing a pump chamber pressure, passively opening a metering valve coupled to a pump chamber in response to the decreasing, and while the metering valve is open, generating a rotational output via a motor, transferring the rotational output into an actuation force applied to the metering valve via a metering valve actuation device, and inhibiting the metering valve from closing via sustaining application of the actuation force.

Abstract: A high pressure fuel pump for use with an internal combustion engine and a method of operation of a high pressure fuel pump are disclosed. The high pressure fuel pump may include a supply chamber and a pump chamber separated by a passage in sealing arrangement with a disk. The disk may have one or more holes therethrough and be rotatable in order to place the holes in the disk in varying degrees of alignment with the passage to allow respective, varying amounts of fuel to flow through the passage.

Abstract: A method for operating a fuel pump is provided. The method may include decreasing a pump chamber pressure, passively opening a metering valve coupled to a pump chamber in response to the decreasing, and while the metering valve is open, generating a rotational output via a motor, transferring the rotational output into an actuation force applied to the metering valve via a metering valve actuation device, and inhibiting the metering valve from closing via sustaining application of the actuation force.

Abstract: A high pressure fuel pump for use with an internal combustion engine and a method of operation of a high pressure fuel pump are disclosed. The high pressure fuel pump may include a supply chamber and a pump chamber separated by a passage in sealing arrangement with a disk. The disk may have one or more holes therethrough and be rotatable in order to place the holes in the disk in varying degrees of alignment with the passage to allow respective, varying amounts of fuel to flow through the passage.

Abstract: A fuel system including a high pressure fuel pump with a quite fuel metering valve is disclosed. In one example, the quite fuel metering valve may be cam driven. The fuel system may reduce engine noise and may provide operating modes that are different from other fuel systems.

Abstract: A fuel system including a high pressure fuel pump with a quite fuel metering valve is disclosed. In one example, the quite fuel metering valve may be driven via a rotating motor. The fuel system may reduce engine noise and may provide improved fuel pressure control.

Abstract: A fuel system including a high pressure fuel pump with a quite fuel metering valve is disclosed. In one example, the quite fuel metering valve may include a fuel volume control plate. The fuel system may reduce engine noise and may provide improved fuel pressure control.