Abstract: A system is disclosed for modifying fuel pressure in a high-pressure fuel injection system of an internal combustion engine for subsequent fuel system leak testing. The fuel pressure in a fuel collection unit of the fuel injection system is increased to a fuel pressure near a maximum allowable fuel collection unit fuel pressure value while maintaining low engine load.

Abstract: A CPU (30) sets a plurality of stages in which a plurality of opposing characters which are to become opponents in a battle become able to appear, and causes a player to advance to a next stage after having won over respective opposing characters in a certain stage, thereby increasing the number of cards available in a battle.

Abstract: A booster unit is provided in an injector of a fuel injection system. The booster unit comprises a booster piston accommodated in a pressure chamber, and a discharge valve capable of discharging fuel in a backpressure chamber. A controller has an indication-value setting step of setting an indication value of a target pressure in a common rail in correspondence to an engine operation state, a determination step of determining whether or not the indication value of the pressure in the common rail is in a direction of reduction to be lower in comparison to a previously set indication value, and a step of prolonging an open time of a discharge valve of the booster unit when the determination step has determined that the indication value is in the direction of reduction.

Abstract: A fuel vapor purge control assembly includes an intake passage, a vapor purge passage in fluid communication with the intake passage, a port between and in fluid communication with the intake passage and the vapor purge passage; a closing member movably mounted in the intake passage and an actuator assembly received in the receptacle and connected to the closing member. The closing member has a first position where the closing member closes the port and blocks fluid communication between the intake passage and the vapor purge passage and is outside of a fluid stream of the intake passage when fluid is flowing through the intake passage. The closing member has a second position where the closing member opens the port and allows fluid communication between the intake passage and the vapor purge passage and extends into the fluid stream of the intake passage when fluid is flowing through the intake passage. The actuator assembly drives the closing member between the first and second positions.

Abstract: Fuel injection equipment is provided which realizes characteristics of fuel injection proper for all over the operation range of an engine, can further reduce nitrogen oxide(NOx) emission, and is high in mechanical durability. The fuel injection equipment for an internal combustion engine comprises an injection pump having a plunger part and a fuel passage equipped with a main electromagnetic valve, a fuel supply part for supplying the fuel to the fuel injection pump, a fuel injection pipe for sending the fuel to an injection nozzle part, and a secondary electromagnetic valve attached to an overflow pipe for returning to said fuel supply part the redundant fuel not to be injected from said unit injector, wherein an orifice is attached to said overflow pipe.

Abstract: A fuel injection device includes an injection valve connected in an injection line for the fuel and having a nozzle chamber and a control chamber that are both connected to the injection line, an on-off valve for switching back and forth between a lower injection pressure and a higher injection pressure, and a valve device for controlling the pressure prevailing in the control chamber. A shared actuator is provided for the valve device and the on-off valve, wherein the actuation distance of the shared actuator required to open the on-off valve is greater than the actuation distance required to open the valve device.

Abstract: A ground cable between an engine and a body frame has an advantage against vibrations and for increasing the universality in use and further improve the flexibility in coupling to a vehicle body. An engine case and a vehicle body frame are connected to each other by a cable to ground the engine. The cable has a diameter set substantially equal to one of the other cables that has the greatest wire diameter wiring lines, that is, a wiring line cable between a battery and the engine and wiring line cables and between the battery and a starter motor.

Abstract: A fuel injection system for internal combustion engines, having a fuel injector that can be acted upon by a high-pressure fuel source includes a pressure booster, which contains a movable boosting element dividing a work chamber which can be made to communicate with the high-pressure source via a high-pressure line from a high-pressure chamber that acts on the fuel injector. The high-pressure from chamber is variable by filling and evacuating a differential pressure chamber of the pressure booster. A filter element is received in a line portion that branches off from the high-pressure line and is upstream of flow connections for filling the differential and high pressure chambers.

Abstract: In a diagnostic apparatus for an evaporative emission control system having a fuel tank is hermetically sealed under negative pressure on the basis of target inner pressure, and leak of the evaporative emission control system is judged when a diagnosis value based on a pressure variation amount after the hermetical sealing under at least negative pressure is larger than a judgment value, ECU estimates an evaporated fuel generated amount on the basis of a tank inner pressure value at the start time of a diagnosis. When the evaporated fuel generated amount thus estimated is large, target inner pressure Pteb is set to a high value, and when the evaporated fuel generated amount thus estimated is small, the target inner pressure Pteb is set to a low value.

Abstract: A general-purpose engine includes a canister for adsorbing fuel vapor that has evaporated within a fuel tank. The fuel vapor, which has desorbed from the canister, is guided to an intake system communicating with an engine main body. A housing recess is formed in a base of the fuel tank, recesses toward the interior of the fuel tank, and houses the canister. Thus, an external impact to the canister can be avoided while also avoiding any increase in the dimensions of the general-purpose engine.

Abstract: A purge valve is in fluid communication between a fuel vapor collection canister and an intake manifold of an internal combustion engine. The purge valve includes a body, a seat, a head, and a solenoid. The body defines a fuel vapor flow path between a first port is in fluid communication with the fuel vapor collection canister, and a second port is in fluid communication with the intake manifold. The seat defines an aperture through which the fluid flow passes in an open configuration of the purge valve. The head includes a permanent magnet, and is attracted to the seat and occludes the aperture in a closed configuration of the purge valve. The solenoid repels the head toward the open configuration when the solenoid is energized, and the head occludes the aperture due to the magnetic attraction with the seat when the solenoid is de-energized.

Abstract: A power module for a fuel injection unit is shown and described. The power module includes a housing that has a plurality of first and second housing portions spaced apart along a first axis. Each of the first housing portions is formed to enclose each of a plurality electromagnetic coil subassemblies spaced apart along the first axis. Each of the second housing portions connects the plurality of first housing portions together along the first axis and includes a wall with at least one inflection portion with respect to the first axis. A fuel injector module is also shown and described. The fuel injector module includes the power module and a plurality of valve group subassemblies. Each of the valve group subassemblies is disposed in respective first housing portions of the module and secured thereto via a securement. Various methods relating to the power module and fuel injector module are described.

Abstract: The method for controlling an idle stop-and-go system is based on one or more engine control modes, including a starting mode wherein an engine control unit (ECU) starts an engine by an engine stop release signal received from a starter/generator control unit (SCU), a normal mode for normally operating the engine, and an after-run mode wherein the ECU stops the engine based on an engine stop signal received from the SCU. Initially, it is determined whether a present engine control mode is the normal mode. Thereafter, it is determined whether an engine stop signal is received from the SCU. The engine control mode is then changed to the after-run mode whern the present engine control mode is the normal mode and an engine stop signal is received from the SCU. Finally, the engine warning lamp is blocked from illuminating.

Abstract: A fuel injection pump includes a camshaft, an eccentric cam, a cam ring, a housing and plungers. The camshaft is rotated by an engine. The cam is provided separately from the camshaft and is formed with a connecting portion connected with the main shaft. The cam rotates with the camshaft. The cam ring revolves around the camshaft so that the cam ring rotates with respect to the cam along an outer periphery of the cam. The housing rotatably houses the cam and the cam ring and is formed with fuel pressurizing chambers. The plungers reciprocate in accordance with the revolution of the cam ring to pressurize and to pressure-feed fuel drawn into the fuel pressurizing chambers. Strength of the connecting portion is set to a value lower than damage strength of the housing.

Abstract: A hybrid fuel injection system which allows electronic control over the injection processes, wherein selective rate shaping and multiplicity of injections is possible. The hybrid fuel injection system consists of an add-on common rail system (CRS) which provides supplemental fuel injections with respect to the main fuel injections provided by a unit pump system (UPS). Additionally, the CRS can serve to provide fuel injections as necessary to effect a “limp-home” mode of engine operation in the event of a failure of the UPS. Both the CRS and the UPS use common fuel supply, return, injector, and electronic controller.

Abstract: A return fuel temperature control module is adapted for use in controlling the temperature of fuel diverted away from an engine and returned to a fuel tank. The module includes a housing formed to include passageways and a flow controller to control flow of fuel through the passageways.

Abstract: A fuel injection valve with a valve body that contains a bore delimited at its end oriented toward the combustion chamber by a valve seat and whose end region oriented toward the combustion chamber has at least one injection opening. A piston-shaped valve needle is contained in the bore in a longitudinally sliding fashion and has an essentially conical valve sealing surface by means of which the valve needle cooperates with the valve seat in order to control the at least one injection opening. The valve seat has a first conical partial surface and a second conical partial surface wherein the second conical partial surface is disposed downstream of the first conical partial surface and is raised in relation to it.

Abstract: A variable purge orifice assembly for an evaporative emission system of a vehicle includes a housing for fluid connection to a vapor canister and a purge solenoid of the evaporative emission system. The housing has a purge orifice therein. The variable purge orifice assembly also includes a regulating device connected to the housing and for connection to an engine of the vehicle. The regulating device is actuated by manifold vacuum from the engine to vary flow of fuel vapor through the purge orifice from the vapor canister to the purge solenoid.

Abstract: Fuel injection system having a feed pump by which fuel is pumped out of a fuel tank to the intake side of a high-pressure pump pumps fuel into a reservoir as a function of engine operating parameters. A fuel metering device is provided for adjusting the fuel quantity pumped into the reservoir by the high-pressure pump. An electrically actuated blocking valve is disposed between the feed pump and the high-pressure pump, and by means of this valve the high-pressure pump can be disconnected completely from the feed pump. By means of the blocking valve, it can still be attained that no fuel is pumped by the high-pressure pump even if the fuel metering device does not provide complete sealing.

Abstract: An engine ECU executes a program including the steps of, when it is necessary to calculate an integral term, employing an integral term for use when two pumps are operating for calculation of a duty when the number of operating pumps is 2 and storing the calculated integral term in a memory as the one for use in the case of two pumps operating, and employing an integral term for use when one pump is operating for calculation of a duty when the number of operating pumps is not 2 and storing the calculated integral term in the memory as the one for use in the case of one pump operating.