Abstract: A vapor management system (10) includes a fuel tank (12), a canister (14), a pressure control valve (16) between the tank and canister and defining a high pressure side (34) and a low pressure side (32), a vacuum source (18), a purge valve (19) between the canister and vacuum source, a leak detection valve (20) connected with the canister and including a processor (30). A pressure sensor (24) and a temperature sensor (26) are disposed in a fuel vapor cavity of the fuel tank, with signals from the sensors being received by the processor. Based on an absolute temperature measured by the temperature sensor, the processor compares a predicted pressure in the fuel tank to the measured absolute pressure, and identifies a leak on the high pressure side if the predicted pressure is outside a tolerance range, while maintaining pressure in the fuel tank.

Abstract: A method adjusts a pulse width of a signal. The method provides a fixed voltage input trigger pulse (34), of a certain pulse width, to a pulse width generator circuit (10) and provides an output pulse (52) from the pulse width generator circuit such that a pulse width of the output pulse is longer than the certain pulse width, without changing a voltage or frequency of the input trigger pulse. The method is used to drive an injector of a diesel reductant delivery system to inject fluid into an exhaust flow path.

Abstract: An example key fob assembly includes a circuit board having a plurality of circuits in the keypad having a plurality of coupled buttons closing the plurality of circuits. A reinforcement member secures to a key fob housing between the circuit board and the keypad. The circuit board abuts the reinforcement member.

Abstract: A fuel pressure damper (10) includes a housing (14) defining an inlet (40) for receiving fuel from a fuel rail. A cover (12) is coupled to the housing to define an interior space (15). A flexible diaphragm (30) has a periphery (32) secured to at least the housing or the cover and has a freely movable central portion (28) that divides the interior space into first and second isolated chambers (42, 44). The diaphragm has a shaped feature (48) such that the central portion can be displaced over a distance. The inlet communicates with the second chamber (44). A spring cup (26) is in the first chamber (42) and is engaged with the central portion of the diaphragm. A variable rate compression spring (18) is in the first chamber and is disposed between the spring cup and the cover. The central portion of the diaphragm and spring are constructed and arranged to dampen low to high magnitude fuel pressure pulsations in the second chamber.

Abstract: A reductant delivery unit (10?) for selective catalytic reduction (SCR) after-treatment for vehicles includes a fluid injector (12) having a fluid inlet (24) and a fluid outlet (25) with the fluid inlet receiving a source of urea solution to be sent through the fluid outlet. Movable inlet cup structure (16?) communicates with the inlet of the fluid injector. A shield (18?) is fixed with respect to the fluid injector and surrounds at least portions of the fluid injector and the inlet cup structure. A spring (26) is engaged between a portion of the inlet cup structure and the shield. When the urea solution freezes in the fluid injector and expands near the fluid inlet of the injector, the inlet cup structure moves toward the injector inlet to accommodate the frozen urea solution, with the spring returning the inlet cup structure to an initial position once the frozen urea solution melts.

Abstract: A flow control valve (15) for a direct injection pump (10) has an inlet end (12), an inlet valve (26), a compression chamber (48), a pump piston (14), and an outlet (13). The valve (15) has a housing (16) and a non-electrically operated control plunger (22) movable within the housing. The control plunger engages with and disengages from the inlet valve to control opening and closing of the inlet valve. A spring (28) biases the control plunger away from the inlet valve. The pump and housing define port structure (38, 44) fluidly connecting the outlet with a volume (42) that communicates with the control plunger such that when fluid pressure at the outlet is greater than a certain value, the fluid pressure in the volume alone causes the control plunger to move against the spring and engage the inlet valve to hold the inlet valve in an open position.

Abstract: An injector (10) includes a valve body (16) having an interior portion (18) and a seat (32). An armature tube (20) is in the interior portion. A spring (28) biases a valve member (24) into engagement with the seat. A movable armature (40) is coupled to the armature tube. A calibration member (36) is engaged with the valve member and engaged with the spring. A stator (52) is coupled to an inlet tube (41) and has an end surface spaced from an end surface of the armature in the closed position of the injector, thereby defining an air gap (54) between the end surfaces. A coil (56) is disposed about a portion of the inlet tube. A housing (64) surrounds at least a portion of the coil. Magnetic flux causes the armature and armature tube to push the valve member off the seat.

Abstract: An injector (10) includes a valve body (16), an armature tube (20) in the valve body, a seal disk (24) carried by the armature tube, a spring (30) associated with the seal disk, a seat (34) defining an outlet. The seat includes a seat surface (38) engaged with the seal disk that is biased by the spring, when the injector is in a closed position, preventing fuel from exiting the outlet. A movable armature (42) is coupled to an end of the armature tube. An adjusting tube (48) engages an end of the spring. An inlet tube (50) defining an inlet has an end surface that is spaced from the periphery of the armature in the closed position. An electromagnetic coil (58) is disposed about a portion of the inlet tube. A flux member (60) is associated with the coil. A housing (62) covers at least a portion of coil.

Abstract: A compact fuel pressure regulator (10) includes a housing (12) with an interior (13) communicating and inlet opening (16) and an outlet opening (20). The housing defines a valve seat surface (26) in the interior. A cover (22) is provided at an end of the housing and is disposed in the interior. The cover includes a through-hole (24) therein that communicates the outlet opening with the interior. A valve structure (28) is movable within the interior to control fuel flow between the inlet opening and outlet opening. A spring (30) is engaged between the valve structure and the cover so that when pressure of fuel at the inlet opening is greater than a force of the spring, the fuel pushes the valve structure against the bias of the spring and away from the valve seat surface so that fuel flows around a periphery of the valve structure to the outlet opening.

Abstract: A fuel injector (10) has an inlet (12), an outlet (14), and a passageway (16) providing a fuel flow conduit from the inlet to the outlet. A valve structure (22, 24) is movable in the passageway between first and second positions. A seat (26) is provided at the outlet and has at least one seat passage (28) in communication with the passageway. Movement of the valve structure between the first and second positions controls the flow of fuel through the seat passages. The seat includes an outer tip surface (30) through which the least one seat passage extends. A catalytic coating (32) is provided on at least a portion of the outer tip surface. The coating causes oxidation of fuel on the coating to occur at a temperature lower than if the coating was not provided.

Abstract: A fuel supply system (10) for a vehicle includes a fuel tank (12) for holding fuel therein. A pump (14) pumps fuel from the tank. A filter (16) filters fuel. A fuel rail (20) receives filtered fuel originating from the pump. A pressure regulator (18) controls pressure of fuel received by the fuel rail. Fuel injectors (24) inject fuel, received from the fuel rail, into an internal combustion engine. A fuel detection system (28) in in the fuel supply system and includes a plurality of detectors (30, 30?). Each detector is constructed and arranged to be exposed to fuel to detect a distinct chemical element or compound in the fuel.

Abstract: A reductant delivery unit (10) includes a fluid injector (12) and a flange (20) coupled with the fluid injector. An exhaust boss (28) has a surface (39) defining a through-hole (40) that communicates with a vehicle's exhaust flow path. The flange is coupled to a mounting surface such that the outlet of the fluid injector communicates with the exhaust flow path so as to control injection of urea solution into the exhaust gas flow path. A gasket (32) is sandwiched between the flange and the mounting surface. The gasket has a surface (37) defining a through-hole (38) therein that communicates with the through-hole in the exhaust boss to permit the urea solution to pass from the fluid outlet to the exhaust flow path. Gasket shielding structure (44) covers the surface defining the through-hole in the gasket to prevent the urea solution from contacting the gasket.

Abstract: A determination is made as to whether a frame to be transmitted according to a first protocol is susceptible to being incorrectly interpreted by a receiver in a vehicle as being transmitted according to a second protocol. When the frame is determined to be susceptible to an incorrect interpretation, an internal value of the frame is adjusted, and the adjustment is effective to prevent an incorrect interpretation of the frame being transmitted from the tire pressure monitor to the receiver. The adjusted frame can then be transmitted.

Abstract: A receiver device is tuned to monitor for first transmissions at a first time according to a first criterion and to monitor for second transmissions at a second time according to a second criterion. When the receiver device initially recognizes one of the first transmissions being transmitted according to the first criterion or the second transmissions being transmitted according to the second criterion, the recognized transmission is verified as being valid. When the transmission is recognized as valid, a transmission apparatus is activated to transmit an indication to a receiver so that a localization process can be executed.

Abstract: An apparatus for transmitting tire pressure signals includes a transmission buffer and a transmitter. The transmission buffer is configured to store tire pressure monitoring data. The transmitter is configured to transmit a signal including the tire pressure monitoring data. The signal includes a burst that includes plurality of frames and each of the frames includes the tire pressure monitoring information. A plurality of pause spaces is disposed between at least some of the frames in the burst.

Abstract: Tire pressure information is sensed. The sensed tire pressure information is stored in a transmission buffer. A control program is executed to transmit the tire pressure information from the transmission buffer to an external receiver device according to each of a plurality of communications formats incorporated into the control program and not according to a manufacturers' code.

Abstract: A fuel delivery system for a vehicle includes a fuel injector that meters fuel flow and provides for pre-heating fuel to aid combustion. A control circuit including a synthetic inductor drives a heated element within the fuel flow.

Abstract: A valve structure (20?) is provided for insertion into a boss (22?). The boss includes a threaded bore (46) and at least one key slot (48) therein. The valve structure includes a valve (26) constructed and arranged to control fluid flow, a fitting (24) surrounding at least a portion of the valve with the fitting having external threads (28) for mating with the threaded bore, and anti-rotate structure (34) between the valve and the fitting. The anti-rotate structure is constructed arranged such that when the fitting is rotated into threaded engagement with the boss, at least a portion of the anti-rotate structure engages a surface defining the key slot in the boss, thereby preventing rotation of the valve, with the fitting clamping on the anti-rotate structure and thus the valve.

Abstract: A dosing valve assembly is disclosed for administering a reducing agent into an exhaust stream from an internal combustion engine upstream of a catalytic converter and diesel particulate filter. The dosing valve assembly includes a control valve coupled to a source of reducing agent, a delivery valve constructed and arranged for coupling to the exhaust stream to enable a quantity of reducing agent to be administered into the exhaust stream, and an elongated conduit connecting the control valve and delivery valve for fluidly communicating reducing agent from the control valve to the fuel delivery valve. The disclosed arrangement enables the control valve to be displaced from the delivery valve and thus away from the high temperature environment proximal to the exhaust stream.

Abstract: A solenoid device includes a solenoid assembly (30) including a stator (42, 32, 38) and a coil (36) for generating a magnetic field. An armature structure (14, 16) can move with respect to the solenoid assembly from a closed position, defining a working gap area (62) between the coil and a portion of the armature structure, to an open position in response to the magnetic field generated by the coil. Seal structure (22) is coupled with a proximal end of the armature structure and has a sealing edge (28) to seal with a component when the armature structure is in the closed position thereof. A spring (44) biases the armature structure to the closed position. Under certain operating conditions of the device, pressure is balanced between the working gap area and an area defined adjacent to 1) the sealing edge, and 2) a distal end of the armature structure.