Abstract: A trim system for controlling an equivalence ratio in a fuel system is provided. The fuel system includes an air duct, a mixer disposed in the air duct, and a converter. The mixer has a reference pressure port and an air valve vacuum port. The converter has an outlet port and a bias port. The trim system comprises the mixer, the converter, a balance line, one or more orifices, and first and second trim valves. The outlet port is operably coupled to the mixer to deliver vaporized fuel to the mixer. The balance line is operably coupled to the reference pressure port, the bias port, and the air valve vacuum port. The balance line provides pressure to the bias port. The first and second trim valves are disposed in the balance line and operable such that the equivalence ratio in the fuel system is controlled.

Abstract: A fuel delivery unit for delivering fuel from a fuel container to an internal combustion engine of a motor vehicle, comprising a plurality of components, with the components being a flange for closing an opening in the fuel container, a splash pot which is connected to the flange by means of supporting elements a fuel pump which is arranged in said splash pot, a fuel filter, a pressure regulator, a filling level sensor and a pump pre-filter, and means for connecting each individual component to a ground potential of the motor vehicle. Components through and around which fuel flows are connected to the ground potential by means of at least two electrically conductive connections.

Abstract: An electronic throttle control apparatus includes first and second throttle position sensors that detect an opening of a throttle valve for adjusting an amount of supply air to an internal combustion engine, a throttle control unit that controls to drive the throttle valve, first and second accelerator position sensors that detect an operation amount of an accelerator pedal, and an ECU that calculates control parameters for the internal combustion engine on the basis of internal combustion engine operation information including an accelerator opening and a throttle opening and controls a throttle actuator such that a throttle opening position coincides with a target throttle opening position included in the control parameters. The ECU surely detects an abnormality in a sensor output due to contact failure or the like of the throttle position sensors and the accelerator position sensors.

Abstract: A fuel feed apparatus pumps fuel in a fuel tank to an outside of the fuel tank. The fuel feed apparatus includes a lid member that covers an opening formed in the fuel tank. The lid member includes an outlet passage, through which fuel passes to the outside of the fuel tank. A pump module is accommodated in the fuel tank. The pump module is supported by the lid member. The pump module includes a fuel pump that pumps fuel in the fuel tank to the outside of the fuel tank. A pipe member connects with a pipe connecting portion of the outlet passage and a pipe connecting portion of the pump module. The pipe member introduces fuel discharged from the pump module to the outlet passage. The pipe connecting portion of the outlet passage and the pipe connecting portion of the pump module are substantially perpendicular to an axis of the lid member.

Abstract: A recoil starter for an internal combustion engine has a housing with a pulley carried at least in part for rotation therein. The pulley is arranged in operable communication with a crankshaft of the engine. A pull cord is wound about the pulley with one end of the cord being arranged to be pulled by a user to rotate the pulley. An actuator is carried for rotation in response to rotation of the pulley. A pump is arranged for actuation in response to rotation of the actuator to provide fresh liquid fuel to a carburetor and remove fuel vapor and stale fuel from the carburetor and deliver it to a fuel tank prior to starting the engine.

Abstract: The invention relates to n internal combustion engine and method for controlling a supercharged internal combustion engine, wherein a deviation of the actual lambda value from a calculated lambda value is detected. The value for the exhaust back pressure is corrected subject to the detected deviation for the event of a valve overlap, when the gas exchange valves of the burner head are simultaneously open. The corrected value for the exhaust back pressure is used to determine the air volume in the cylinder.

Abstract: An air control module comprises a canister purge valve, a vapor blocking valve, a canister vent valve and a housing, wherein at least a portion of the canister purge valve, the vapor blocking valve, and the canister vent valve are disposed within the housing. The housing may optionally include three ports fluidly coupled to the canister purge valve, the vapor blocking valve, and the canister vent valve respectively. The canister purge valve may be fluidly coupled to an atmospheric vent and an evaporation canister (which may be mechanically coupled to the housing of the air control module) for controlling the passage of fuel vapor from the evaporator canister to an engine. The vapor blocking valve may be fluidly coupled to a fuel tank and the evaporation canister, while the canister vent valve may be fluidly coupled to an engine and the evaporation canister. The housing may optionally include an air filter fluidly coupled to the canister vent valve.

Abstract: A fuel filling port structure of a fuel tank is provided in which a lid housed in the port structure is biased towards a closed position when a fuel supply nozzle is not inserted, and moved to an open position when the fuel supply nozzle is inserted. Lid locking mechanisms are disposed in the port structure which lock the lid in the closed position or unlock the lid so as to be movable to the open position corresponding to the insertion of the fuel supply nozzle.

Abstract: A fuel injector for a fuel system is disclosed. The fuel injector has a nozzle member and a needle valve member slidingly disposed with the nozzle member. The nozzle member has a tip portion, at least one orifice disposed at the tip portion, a base portion, and a female conical seating surface disposed at the base portion. The needle valve member has a tip end configured to selectively restrict fuel flow through the at least one orifice, a base end, and a male conical seating surface disposed between the tip end and the base end. The male conical seating surface is configured to engage the female conical seating surface to restrict fuel flow through the at least one orifice and has a hydraulic surface area greater than a hydraulic surface area of the base end of the needle valve member.

Abstract: An isolated fuel delivery system for an internal combustion engine includes a fuel rail with a clamping method operable to retain an isolating member with respect to the fuel rail. The isolating member operates to isolate the vibratory motion of the fuel delivery system form the attachment point or points. The attachment point is typically a cylinder head of the internal combustion engine. Additionally, an isolating ring assembly is provided having a first and second stiffening member with an isolating ring member disposed therebetween. The isolating ring assembly is disposed between a fuel injector of the isolated fuel delivery system and the cylinder head. The isolating ring member operates to isolate the vibratory motion of the fuel injector from the internal combustion engine.

Abstract: In a fuel injection system, a fuel tank is disposed below an electronically controlled fuel injection apparatus. A fuel reservoir chamber for supplying fuel from the fuel tank is disposed above the electronically controlled fuel injection apparatus, and the fuel stored in the fuel reservoir chamber is supplied to the electronically controlled fuel injection apparatus via a fuel supply passage. The fuel reservoir chamber and the fuel tank are connected by a first fuel return passage through which vapor is ejected and fuel in the fuel reservoir chamber overflows. A second fuel return passage for returning surplus fuel from the electronically controlled fuel injection apparatus is connected to either of the fuel reservoir chamber and the first fuel return passage at the position above the connecting position at which the fuel reservoir chamber connects with the first fuel return passage.

Abstract: A spark plug circuit for, and a method of, reducing or preventing the corrosion of a spark plug electrodes in an internal combustion engine. The circuit and method provide a positive voltage across the center electrode/ground electrode gap, which repels positively charged corrosion mechanisms, such as calcium and phosphorus ions.

Abstract: A sensor is used to sense a property relating to each one of a plurality of different elevational locations within a vertical plane that is normal to a length of an aircraft. The vertical plane passes through the doorway of the aircraft, and at least some of the plurality of different elevational locations are disposed outside a known surface boundary of the aircraft. A variation in the sensed property between two elevational locations is detected, the variation indicative of an elevational position of the known surface boundary. An elevational position of the doorway of the aircraft is determined based upon a known relationship between the known surface boundary and the doorway, and based upon the indicated elevational position of the known surface boundary. The determined elevational position of the doorway is used to guide an aircraft engaging portion of the movable bridge into elevational alignment with the said doorway.

Abstract: In a procedure for the functional diagnosis of an activateable fuel tank ventilation valve of the fuel tank system of an internal combustion engine, especially of a motor vehicle, whereby in specifiable time intervals when the fuel tank ventilation valve is activated to open, regeneration gas is added to the air drawn into the combustion chamber, whereby fuel is delivered to the combustion chamber, whereby the fuel, the air, respectively the fuel, the air and the regeneration gas are combusted in the combustion chamber and whereby by comparison of at least one operating parameter, which characterizes the combustion of fuel and intake air with the corresponding operating parameter, which characterizes the combustion of fuel, intake air and regeneration gas, inference can be made about the functional capability of the fuel tank ventilation valve, the HC-concentration of the regeneration gas is specifically affected by changing the regeneration gas stream.

Abstract: The high-pressure pump has at least one pump element with a pump piston driven in a reciprocating motion and guided displaceably in a cylinder bore of a pump housing part which piston defines a pump work chamber that can be filled with fuel from a fuel inlet via a suction valve in the intake stroke. The suction valve has a pistonlike valve member which has a cylindrical shaft and a head of larger cross section at least the shaft is guided displaceably in a guide bore of a valve housing. The head of the valve member is also guided displaceably in a bore of the valve housing, via guide portions embodied on the valve member and spaced apart from one another in the circumferential direction; between the guide portions, flowthrough portions of reduced cross section compared to the guide portions provide for fuel flow out of the fuel inlet into the pump work chamber.

Abstract: A boat has an outboard motor that is mounted to a hull and has a fuel system. The outboard motor has a cowling housing an engine. The fuel system includes a fuel pump disposed within a sealed container. The sealed container provides a physical and thermal barrier to seawater and engine heat that may otherwise degrade fuel pump operation. The sealed container can also include an internal insulator.

Abstract: A high pressure fuel supply system includes: a high pressure fuel pump having a normally closed electromagnetic valve; and a controller for calculating a valve open signal and a valve close signal for the electromagnetic valve in accordance with a state amount of an engine, and supplying a drive current to the electromagnetic valve, wherein the controller applies and the valve close signal having a time duration shorter than a valve close response time during a valve open period of the electromagnetic valve, the valve close response time being a time taken to close the electromagnetic valve after the valve close signal is applied. The controller applies alternately and periodically the valve close signal and valve open signal during the valve open period of the electromagnetic valve.

Abstract: A method for operating an internal combustion engine having a fuel pump with a drive shaft is provided, the fuel pump conveying fuel into at least one fuel-collection line, the fuel being subsequently conveyed to at least one combustion chamber via at least one fuel-injection device. In the method, a quantity of the fuel conveyed by the fuel pump into the fuel-collection line is set by means of a valve device. The valve device is configured to selectively connect a discharge side of the fuel pump to a low-pressure region of the fuel pump (during deactivation phase), and selectively disconnect the discharge side from the low-pressure region (during supply phase). In supplying the quantity of fuel, a supply rate, defined as the number of supply phases of the fuel pump per rotation of the drive shaft, is determined as a function of at least one operating parameter of the internal combustion engine.

Abstract: An apparatus and method for controlling charge motion in the air intake manifold includes a barrel-style valve rotatably mounted in the lower air intake manifold between the linearly arranged set of air inlets and the first and second sets of laterally offset air outlets which branch to the first and second cylinder banks, respectively. The barrel valve includes a plurality of openings and is rotatable between a fully open position wherein the plurality of openings are in alignment with the respective air inlets and outlets in the lower manifold allowing substantially unimpeded airflow therethrough, and fully closed position wherein the plurality of openings are substantially fully out of alignment with the respective air inlets and outlets substantially preventing air flow therethrough while allowing air flow through an air bypass formed adjacent to each air inlet and outlet pair.

Abstract: An ECU feedback controls a discharge amount of a high-pressure pump in such a manner that a detected fuel pressure is consistent with a target fuel pressure. The ECU determines whether engine shut sown is imminent. When the ECU determines that engine shut down is imminent, the target fuel pressure is established lower than a normal fuel pressure. Since the engine is shut down in a condition where the fuel pressure is decreased, a fuel leakage from a fuel injector is unlikely.