Abstract: A fuel vapor storage and recovery apparatus for a fuel system of a motor vehicle including an internal combustion engine with an exhaust pipe and a fuel tank containing a fuel vapor/air mixture above a liquid fuel, the exhaust pipe being close to the fuel tank. The apparatus includes a vapor storage canister including a fuel vapor adsorbent material therein, a thermal insulation mechanism for thermally insulating at least a portion of the fuel tank from the heat generated by the exhaust pipe, and a beat exchanger. The heat exchanger is configured to heat to a purge temperature air guided there through by absorbing heat from the thermal insulation mechanism.

Abstract: A check valve includes a body defining a passageway through which fuel flows in a first fuel-flow direction during pump operation. The check valve also includes a seat, a seal member, and a biasing member biasing the seal member toward the seat. The seal member is movable between a first seated position in which the seal member is engaged with the seat and the pressure in the fuel rail is substantially equal to the operating pressure, and a second seated position in which the seal member is engaged with the seat and a residual pressure in the fuel rail is substantially less than the operating pressure. The seal member and the seat define a leak path between the fuel pump and the fuel rail permitting fuel to flow in a second fuel-flow direction opposite the first fuel-flow direction when the seal member is in the second seated position.

Abstract: The invention relates to a shape of a combustion chamber for a direct-injection diesel engine, in which a mixture in, particularly, an expansion stroke is promoted by optimally designing the shape of the combustion chamber, and further, the compatibility between PM reduction and NOx reduction can be achieved by improving a retardation limit and speeding up combustion at a high EGR. The inside of a combustion chamber 12 formed at a top of a piston is formed in such a manner that a vertically cross-sectional shape passing a center axis O2 inside of the combustion chamber is symmetric with respect to the center axis. Furthermore, an opening 18 at an upper end of the combustion chamber 12 is formed into a substantially polygonal shape in combination of round portions 21 and straight portions 22.

Abstract: A method of controlling an internal combustion engine system. The method comprises supplying a first amount of electric energy to heat to an upstream sensor located in an exhaust gas passage upstream of an exhaust gas after-treatment device and adjusting an air-fuel mixture supplied to the internal combustion engine based on an output of the upstream sensor during a first engine operating condition, and supplying a second amount of electric energy, which is smaller than the first amount, to heat the upstream sensor and adjusting the air-fuel mixture based on an output of a downstream sensor located in the exhaust gas passage and downstream of the exhaust gas after-treatment device during a second engine operating condition.

Abstract: A method and system for controlling fuel flow in a fuel metering system that includes a metering valve and a proportional bypass valve that produces a differential pressure error across the metering valve includes supplying a first fraction of fuel through the metering valve. A second fraction of the fuel is directed through the proportional bypass valve. The differential pressure error produced by the bypass valve is determined, and fuel flow through the supply line is controlled by adjusting the metering valve based at least in part on the determined differential pressure error, and by adjusting the proportional bypass valve to maintain a substantially constant metering valve differential pressure across the metering valve.

Abstract: A fuel tank assembly includes a fuel tank having a plurality of side walls spaced apart by a floor. A flange extends downward from one of the plurality of side walls at an angle toward the floor. A fuel pump extends from the flange; the fuel pump and flange are arranged to fixedly position at least one inlet connected to the fuel pump at or in close proximity to the floor of the fuel tank. A fuel dam extends away from the floor and has at least one passage formed therein. The fuel dam is positioned so as to create an accumulated area of the fuel tank surrounding the at least one inlet. Fuel enters the accumulated area through the at least one passage and is received by the at least one inlet.

Abstract: A stator core of a motor arrangement includes six cores, which are arranged one after another in a circumferential direction. A bobbin, which is made of dielectric resin, is fitted to each core. Each coil is formed such that a winding is wound around the bobbin through a concentrated winding technique. Dielectric resin is filled between each circumferentially adjacent two teeth to cover each coil. Furthermore, the dielectric resin is molded to form clearances, each of which is formed between the corresponding circumferentially adjacent two teeth on a rotor side. Fuel, which is pressurized by a pump arrangement, passes an interior of the motor arrangement through a fuel passage, which is a gap between an inner peripheral surface of the stator core and an outer peripheral surface of the rotor, and also through the clearances.

Abstract: A fuel delivery system in accordance with the present invention comprises a fuel rail having an outlet opening and an outlet cup that is insertable into the outlet opening. The cup includes a flange. The flange includes at least one tab extending therefrom. The cup further defines a vertical axis extending therethrough. The system further includes a fuel injector with an inlet insertable within the cup. The system still further includes a retention clip. The clip includes an inner peripheral surface, at least a portion of which is configured for engagement with the injector when the clip and injector are assembled together. The clip further includes at least one arm, the arm further including a finger configured for spring engagement with the tab of the cup. The clip is operative to limit the movement of the fuel injector when it is assembled with the clip and inserted in the cup.

Abstract: An outboard motor can comprise a cowling for covering an engine, a high pressure fuel supply system, and a low pressure fuel supply system. The high pressure fuel supply system can have a vapor separator tank and a high pressure fuel pump. The low pressure fuel supply system can have a low pressure fuel pump. A heat insulating chamber, defined from a space for accommodating the engine, can be formed within the cowling. The heat insulating chamber houses the low pressure fuel pump and the fuel filter.

Abstract: A fuel control device for a combustion engine capable of running on any one of a plurality of fuels has a fuel selection module with a plurality of fuel type settings for selecting a specific fuel type whereupon the fuel control device controls the outlet pressure of the chosen fuel to a desired fuel pressure corresponding to the calorific properties of the chosen fuel. The fuel selection module preferably operates a plurality of fuel flow circuits each designated for a specific fuel type, and each having a biased closed inlet valve and a biased closed outlet valve. Located preferably between each inlet and outlet valve is a pressure regulator designated for the specific fuel type and controlling the outlet fuel pressure. The device preferably includes a fuel metering apparatus and a shutoff valve that communicate with, and control in part, fuel flow through the fuel flow circuits.

Abstract: A fuel pump module has a fuel pump with an outlet located within a fuel reservoir, a fuel filter casing within which a fuel filter receives fuel from the fuel pump fuel outlet. A fuel discharge housing attaches to the fuel filter casing such that fuel passing from the filter and into the discharge casing then discharges from either a casing fuel outlet or a bleed orifice. The casing fuel outlet leads to the engine while the bleed orifice discharges fuel into a sump formed into the reservoir's bottom wall under the bleed orifice. The sump retains a quantity of fuel so that during low fuel levels within the reservoir, when the engine is off, the fuel filter maintains its prime condition from fuel in the sump to lessen the filter prime time during engine starting. Selective placement of fuel valves also decreases fuel system prime times.

Abstract: A power tool is driven by a two-stroke engine. The two-stroke engine has a cylinder and a piston reciprocating within the cylinder. The cylinder has a combustion chamber delimited by the piston. The two-stroke engine has a crankcase and a crankshaft rotatably supported in the crankcase and driven by the piston with a connecting rod. The two-stroke engine has one or more transfer passages connecting the crankcase to the combustion chamber in at least one position of the piston. The two-stroke engine has a mixture passage that is connected to a piston-controlled mixture intake provided at the cylinder and supplies a fuel/air mixture. The combustion chamber has an exhaust port provided within the cylinder. The two-stroke engine has a transverse plane dividing the cylinder parallel to and along the longitudinal cylinder axis. The exhaust port and the mixture intake are arranged on the same side of the transverse plane.

Abstract: The invention relates to a monolith retainer for a fuel canister. The retainer has a head portion for retaining a monolith within a chamber of the fuel canister and a plurality of resiliently biased leg members, which extend from the head portion along a length of the monolith being retained. The legs are resiliently biased toward the inner wall of the chamber such that, when the monolith resides within the chamber, contact feet of the resiliently biased leg members abut against the monolith. A support ridge is also provided for preventing the monolith from traveling too far into the canister.

Abstract: A fuel feed apparatus is provided to a fuel tank. The fuel feed apparatus includes a lid member, a pump module, and an electric connector. The lid member plugs an opening of the fuel tank. The pump module is accommodated in the fuel tank for pumping fuel from the fuel tank. The electric connector is provided to the lid member. The electric connector includes at least one terminal and at least one sheath. The at least one terminal electrically connects with the pump module. The at least one sheath covers the at least one terminal partially on a side of the pump module. The at least one sheath has an outer periphery that is surrounded by a recess. The at least one sheath has an end on an opposite side of the pump module. The recess is concaved from the end of the at least one sheath toward the pump module.

Abstract: A housing 11 accommodates a pleated filter element 14. A fuel adsorbent member 16 is arranged in the housing 11 at a position downstream from the filter element 14. The fuel adsorbent member 16 adsorbs evaporative fuel leaking from an engine. The fuel adsorbent member 16 includes holding pleats 16g. Each of the holding pleats 16g is received in the space between an adjacent pair of the element pleats 14a of the filter element 14. This maintains the interval between the element pleats 14a. The holding pleats 16g are formed by folding the fuel adsorbent member 16.

Abstract: A fuel delivery system in accordance with the present invention comprises a fuel rail having an outlet opening and an outlet cup that is insertable into the outlet opening. The cup includes a flange. The flange includes at least one tab extending therefrom. The cup further defines a vertical axis extending therethrough. The system further includes a fuel injector with an inlet insertable within the cup. The system still further includes a retention clip. The clip includes an inner peripheral surface, at least a portion of which is configured for engagement with the injector when the clip and injector are assembled together. The clip further includes at least one arm, the arm further including a finger configured for spring engagement with the tab of the cup. The clip is operative to limit the movement of the fuel injector when it is assembled with the clip and inserted in the cup.

Abstract: An engine ECU executes a program including the steps of: detecting an engine speed NE, a throttle angle THA and an amount of intake air GA; estimating an amount of intake air GAINI from the engine speed NE and the throttle angle THA; if the estimated amount of intake air GAINI minus the detected amount of intake air GA is larger than a predetermined deviation ?GA(0) (YES at S104), then causing an intake manifold injector to inject fuel to clear a deposit, as controlled, at the exhaust stroke when an intake valve is closed and at the intake stroke when the intake valve is opened and an exhaust valve is closed.

Abstract: A valve regulating device intended to regulate the circulation of a fluid in the region of an opening, said device consisting of a pivoting valve body, of an annular support body integrating two opposing bearings mounting said valve body in a rotational manner, and of a control pin, wherein said valve body may be displaced in rotation between a totally open position and a closed position, in which it rests against the annular seat provided by the support body; the support body is provided with a seal with a first extending functional segment and a second extending functional segment having protruding lateral extensions, for example in the form of ribs, on the face of the support body that bears against the edge of the opening, said extensions also being interconnected by intermediate joining portions, which also extend in a protruding manner over the bodies of the two opposing bearings so as to provide a continuous peripheral seal around the opening when the regulating device is mounted on said opening.

Abstract: An advance arrangement for use in controlling timing of fuel delivery by a fuel pump for use in an engine comprises an advance piston (12) which is slidable within a first bore (14) and which cooperates, in use, with a cam arrangement of a fuel pump to adjust the timing of fuel delivery by the pump. A surface associated with the advance piston (12) is exposed to fuel pressure within a first control chamber (38). The pressure of fuel within the first control chamber (38) is controlled by means of a servo piston (24) which is slidable within a further bore (22) provided in the advance piston (12). The servo piston (24) is responsive to speed dependent fuel pressure variations within a servo control chamber (37), thereby to permit adjustment of the timing in response to engine speed.

Abstract: A system and method for evaluating the integrity of a leak detection test for a purge valve of a fuel system in a vehicle reduces or eliminates false failures. The method is executed on an engine control module (ECM) and is configured to determine when vehicle soak conditions meet first criteria conducive to fuel vapor condensation in the fuel tank. The first criteria include a predetermined temperature drop in ambient air temperature between successive drive cycles. The ECM is further configured to determine when a vehicle maneuver meets second criteria indicative of the capability of the maneuver to initiate fuel slosh in the fuel tank, to thereby establish a trigger event. The ECM is further configured to determine, after the trigger event, the maximum slope of a fuel tank vacuum increase. The ECM is still further configured to produce a slope ratio as a function of the maximum vacuum increase slope and a reference vacuum slope corresponding to a slope that is unaffected by any slosh/condensation events.