Abstract: A gas sensor assembly for sensing a pressure of a gas including a housing, a carrier, an electronic chip, a cap and a biasing apparatus. The housing has a wall defining cavity with a port open to the gas. The carrier is mounted to the wall in the cavity. The electronic chip is secured to the carrier on an opposed side from the port and includes a diaphragm portion exposed to the port. The cap is mounted to the chip on an opposed side from the carrier. The biasing apparatus is located between the cap and the wall of the housing, with the biasing apparatus being configured to bias the cap toward the chip whereby gas pressure acting against the diaphragm is opposed by the biasing apparatus.

Abstract: In an internal combustion engine, a variable lift and/or operating angle mechanism variably controls a lift and/or operating angle of an exhaust valve in accordance with a driving condition of the engine, a variable phase mechanism variably controls a phase of a lift center angle of the exhaust valve in accordance with the driving condition of the engine, a present position detecting section detects a present operating position of each of the variable lift and/or operating angle mechanism and variable phase mechanism, and a controlling section controls one of the variable lift and/or operating angle mechanism and the variable phase mechanism which operates normally in a direction in which an in-cylinder residual gas quantity becomes minimum when the other of the variable lift and/or operating angle mechanism and the variable phase mechanism has failed.

Abstract: An arrangement for regenerating a soot burn-off filter in the exhaust duct of an air-compressing fuel injected internal combustion engine having a mechanical speed governor and an altitude matching device dependent on the atmospheric pressure into which the regenerating arrangement is integrated in such a way that, as the exhaust-gas backpressure increases, the speed governor is acted upon via the altitude matching device to reduce the injection quantity to be metered to the internal combustion engine.

Abstract: The supercharge pressure and the pressure differential which develops between the supercharge pressure and the exhaust gas pressure upstream of a turbocharger turbine are monitored. In the event that the supercharge pressure is below a target level which is determined to optimal for the instant set of operating conditions, a first injection reduction amount is calculated. To allow for the effect of very sudden accelerations wherein the pressure differential tends to become large and the charging efficiency of the engine tends to reduce, a second reduction amount is calculated based on the difference between the actual differential and a target value for the instant set of operating conditions. The second reduction amount is also subtracted from the injection volume which is calculated based on the engine speed and a signal which is indicative of the power demand on the engine (the accelerator pedal depression degree).

Abstract: A fuel injection apparatus in which a closed fuel circuit is pressurized, and the amount of fuel injected is determined by varying the area switching on/off time of a solenoid in the injector, thereby allowing variance in the area factor of the equation Q=AV; where Q=flow, A=area, V=velocity. Air intake by the engine is controlled in response to the aspiration conditions of the engine via intake and exhaust signals. The fuel injection apparatus includes a reservoir with a fixed level of fuel, and a low pressure pump which pumps fuel into a circuit containing a pressure relief valve splitting amounts between the reservoir and leaving an amount of fuel approximate to the engine's needs going on the electronic injectors. The basic control of the injector's on/off time is governed by ohmic change of the oscillator input, which is controlled by the conventional accelerator pedal.

Abstract: A part of intake passages is made into an arcuate form extending around a surge tank. A rotatable drum is provided in the surge tank to change the length of the arcuate part of the passages. The rotatable drum is controlled by a control mechanism which is operated in accordance with the engine speed for example, so that the effective length of the intake passages may be changed to keep synchronization between the natural frequency of the intake system and the frequency of the pressure wave caused by the reciprocal motion of the piston of the engine.

Abstract: In a two-stroke cycle internal combustion engine, cylinder structure has an inside peripheral surface which defines a cylinder bore and is formed with an exhaust port, which has an axial extent along the axis of said cylinder bore and communicates with said exhaust system. A piston is axially reciprocable in said cylinder bore and adapted to open and close said port. A restricting member is mounted in said cylinder structure adjacent to said port and adjustable between a full-flow position, in which said restricting member exposes said exhaust port throughout its axial extent, and a restricting position, in which said restricting member restricts the axial extent of said exhaust port. A positioning drive is operatively connected to said restricting member and operable to adjust said restricting member between said full-flow and restricting positions. The positioning drive is adapted to be controlled in dependence on the exhaust gas pressure in said exhaust gas system.

Abstract: An air/fuel ratio compensating device is provided for association with an internal combustion engine having a fuel control valve, air suction pipe means and pedal accelerator means, the compensating device including an area flow metal system made up of a flow detection valve positioned upstream in the air suction pipe means and operatively associated with the fuel control valve, a flow control valve positioned downstream in the air suction pipe means in series with the flow detection valve and being operatively connected to the accelerator pedal means, the area flow meter system enabling the difference in pressure existing on opposite sides of the flow detection valve to be maintained at a predetermined value to insure that the amount of air flow is proportional to the opening area of the flow detection valve thus permitting a determination of the amount of air flow on the basis of the opened area of the flow detection valve, a feedback control mechanism for controlling the area control flow meter and includi