Abstract: A method of operating a fuel delivery system for an internal combustion engine is described. The method may include, after or during engine shutdown, and during a fuel system cool down, activating the first pump; and varying the activation of the first pump responsive to temperature to maintain a higher pressure for high temperatures. By utilizing the pump to generate increased pressure at an appropriate condition during the cool down, for example, the pressures in the system can be managed to reduce the likelihood of fuel migrating to the rail.

Abstract: A method of operating a fuel delivery system for an internal combustion engine is described. The system may include a plurality of direct cylinder injectors, a fuel rail upstream of the injectors, a first pump, and a second pump coupled downstream of the first pump and to the fuel rail. The method may include, after or during engine shutdown, and during a fuel system cool down, activating the first pump; and varying the activation of the first pump responsive to temperature to maintain a higher pressure for high temperatures. Alternatively, in some examples, the system may include a reservoir in a bypass around the second pump, the bypass having a valve downstream of the fuel reservoir, where the valve is positioned vertically above the second pump and the fuel reservoir is positioned vertically above the valve. The fuel reservoir may be sized to hold a sufficient amount of fuel in the bypass to allow fuel to migrate from the bypass to the fuel rail during engine cool down.

Abstract: A system and method for controlling an internal combustion engine during starting use position sensor information in addition to cylinder combustion information to transition from simultaneous fueling to sequential fueling by selecting a cylinder to receive a first sequential fuel injection. Embodiments include a system and method for controlling a sequentially fueled port injected internal combustion engine that contingently select a cylinder to receive a first sequential fuel injection based on position information indicating that the cylinder received a simultaneous fuel injection during its intake stroke. Engine rotational speed is monitored to detect combustion and determine which cylinder fired first. A first sequential fueling pulse is provided to the contingently selected cylinder unless a preceding cylinder in the firing order fires first.

Abstract: A method to deliver fuel during a start for an internal combustion engine is described. The method provides individual cylinder fuel control based on the number of fueled cylinder events. The method offers improved engine emissions while maintaining engine run-up performance.

Abstract: A method to deliver fuel during a start for an internal combustion engine is described. The method provides individual cylinder fuel control based on the number of fueled cylinder events. The method offers improved engine emissions while maintaining engine run-up performance.

Abstract: A method of determining the stopping position of an internal combustion engine infers the angular position of the engine's crankshaft by analyzing the periodic waveform of an output signal produced by a crankshaft position sensor. When the engine is turned off and begins to slow to a stop, an inference routine is commenced in which the ratio of the amplitude of the signal to the time of successive half periods of the waveform is calculated. The amplitude-to-time ratio is used in secondary ratio calculations to obtain ratio values that are then compared to a preselected constant. The result of the ratio value-to-constant comparison reveals whether the crankshaft is continuing to turn in the same direction, or has stopped and reversed its direction. A “bookkeeping” record of the current crankshaft angle is incremented or decremented by a predetermined value each time the ratios are calculated until the engine had stopped.

Abstract: In an automotive type engine having an air bypass valve controlling a portion of the air flow to the engine, decelerations are controlled in a manner to minimize or eliminate the conventional large feedback negative torque impulse to the operator usually experienced when fuel is shut off. The air bypass valve is closed down, in response to correct decel conditions, to an air flow level below that scheduled to establish the normal idle speed condition. The positive engine combustion torque is decreased so that the magnitude of the ratio between it and the engine negative torque becomes small. Immediately following fuel shut-off, the bypass valve is reopened to return the air flow to that level establishing the set idle speed condition upon resumption of fuel flow.

Abstract: A handle for a sports racket in which the sports racket has a flat hitting portion, an elongated neck extending outwardly from the hitting portion and a handle attached to the free end of the neck. The handle includes an elongated body which is dimensioned to be gripped by a human hand. The body is continuously arcuately curved along its side which improves the feel and comfort of the handle when gripped.

Abstract: A socket set in which all of the sockets of decreasing order can interfit into each other and for connecting to the drive for transporting from one place to another. Each of the sockets may be interchanged in position so that the sockets may be engaged with each other and used as an extension for any other socket size.

Abstract: A process for forming a glazed ceramic substrate, more particularly for forming a particular surface finish and/or surface pattern in the glass. The process consists of preparing a ceramic mixture which includes a basic oxide, such as Al.sub.2 O.sub.3, and a glass, forming the substrate as by molding, pressing, or doctor blading and lamination, and sintering in a non-reactive atmosphere on a setter tile that is non-wettable by the glass. During the sintering operation the glass becomes molten and flows downwardly under the influence of gravity through the ceramic particles. The glass flows to the setter plate to conform to its surface configuration, forming a glazed surface on the substrate.

Abstract: A method of forming ceramic material which includes mullite (3Al.sub.2 O.sub.3.2SiO.sub.2) in any desired percentage. A particulate mixture is formed of (1) mullite in an amount of at least 5% by weight, (2) Al.sub.2 O.sub.3 in an amount to provide sufficient SiO.sub.2 to combine with Al.sub.2 O.sub.3 to form the desired mullite. The mixture is sintered to a temperature in the range of 1300.degree. C. to 1600.degree. C. wherein the Al.sub.2 O.sub.3 and SiO.sub.2 react to form mullite under the influence of the initially added mullite.