Abstract: The invention relates to a pressure equalizing insert (1) which is provided for installation in a valve (10) for regulating a fluid stream in particular in a HVAC system. The pressure equalizing insert (1) comprises a housing (2) having an actuating member (3) which is movably mounted thereon and is configured to at least partially guide the fluid stream regulated by the valve (10) and, when the pressure equalizing insert (1) is installed, co-operates with a valve seat (15) depending upon a pressure difference prevailing in the fluid stream in order to regulate the fluid stream. The invention further relates to a valve (10) having an installed pressure equalizing insert (1), wherein the pressure equalizing insert (1) can be inserted in particular as a pre-assembled assembly into the valve (10).

Abstract: An engine control system in a vehicle including an internal combustion engine, a transmission coupled to the internal combustion engine, an intake manifold coupled to the internal combustion engine, an impulse charge valve coupled to the intake manifold, a controller for controlling the impulse charge valve, where the controller controls the impulse charge valve to compensate for torque transients.

Abstract: An excess oxygen reduction system includes a fuel cut-off condition module, an injector module, and a valve module. The fuel cut-off condition module determines whether a fuel cut-off condition exists. The injector module prevents a fuel injector from fueling a cylinder when said fuel cut-off condition exists. The valve module closes an impulse charging valve when said fuel cut-off condition exists.

Abstract: Various systems and methods are disclosed for carrying out combustion in a fuel-cut operation in some or all of the engine cylinders of a vehicle. Further, various subsystems are considered, such as fuel vapor purging, air-fuel ratio control, engine torque control, catalyst design, and exhaust system design.

Abstract: A system and method for utilizing a humidity sensor with an internal combustion engine of a vehicle is described. Specifically, information from the humidity sensor is used to adjust a desired air-fuel ratio to reduce engine misfire while improving vehicle fuel economy. Further, such information is also used to adjust timing and/or lift of the valve in the engine cylinder. Finally, diagnostic routines are also described.

Abstract: A plurality of intake air amount control systems are provided for diagnosing a failure of each intake air amount control system. At the failure of any of them, a fail-safe control is performed using a normal intake air amount control system.

Abstract: A method is described for regulating the fuel injection of an internal combustion engine, to which combustion air is fed through an intake tract, in which two final control elements which are connected in series in the intake tract and in each case control the air mass flow through the intake tract are controlled in respect of their position, an air mass flow (MF) into the intake tract and also an induction manifold pressure (P) prevailing in the intake tract between the final control elements are measured and measurement values are formed in the process, the actual position of both final control elements and the actual rotational speed of the internal combustion engine are sensed and model values for air mass flow (MF) and induction manifold pressure (P) are determined therefrom in an invertible numeric model and an alignment of the model is effected by means of the measurement values and model values, and desired positions for the two final control elements are ascertained from desired values for the air ma

Abstract: A plurality of intake air amount control systems are provided for diagnosing a failure of each intake air amount control system. At the failure of any of them, a fail-safe control is performed using a normal intake air amount control system.

Abstract: An intake-air quantity control apparatus for an internal combustion engine with a variable valve timing system associated with an intake valve comprises an electronic control unit which controls an intake-air quantity of air entering an engine cylinder on the basis of an intake valve closure timing of the intake valve.

Abstract: A method of operating an automotive-type engine at part loads by eliminating engine throttling altogether and controlling the intake flow by heating the intake air and utilizing variable late or early intake valve closings.

Abstract: The present invention provides an intake control valve which is able to reduce intake air leakage, control the amount of intake air with high accuracy, and to allow easy installation to an intake manifold. The intake control valve of an intake control device according to the present invention has a valve body, a case, and an actuator. The valve body is rotatably installed in the case, opening and closing an openingclosing passage formed in the case. The case is fitted with the actuator, which functions to rotate the valve body. In the meantime, the intake manifold is provided for a mounting bore formed for insertion of the case. On the outer side of the case are installed sealing members, which contact the wall surface of the mounting bore to prevent air leakage. The intake control valve is installed in the mounting bore formed in the intake manifold after assembling the valve body, the case and the actuator into one unit.

Abstract: An Otto-cycle engine in which the expansion ratio is set in the range 11:1 to 16:1, comparable to the expansion ratios of Diesel engines and which has a rotary valve mounted in the suction passage. The valve is equipped with a valve actuating timing-adjusting device. The valve is closed prior to the bottom dead centre of each induction stroke to set the expansion ratio higher than the compression ratio set under full load conditions. The engine further includes a knock sensor for sensing or forecasting knocking. Valve closure is advanced by the adjusting device in response to the output signal from the sensor to adjust the compression ratio of the engine.

Abstract: An internal combustion engine has a stator passage leading to a cylinder. An intake poppet valve is disposed between the cylinder and stator passage, and a rotary valve adjoins the opposite end of the stator passage. The rotary valve has a rotor with an elongated tapered rotor passage partially in registration with the stator passage. The rotor is driven by the crankshaft and is adjustable in phase to vary the time of opening and closing of the rotary valve, and is axially shiftable to vary the valve opening duration. A control system responsive to engine speed and load independently varies the rotary valve phase and duration for optimum engine operation.

Abstract: An intake system with a simple and compact structure for an internal combustion engine having a plurality of cylinders each cylinder having an intake port, the opening timing of the intake ports being determined so that that of each cylinder overlaps with that of another in which the intake stroke takes place subsequently to that in the former, the intake system comprising intake passges each being connected to the intake port of one of the cylinders, a juction portion connected to the respective intake passages, a resonance intake passage connected to the junction portion at one end thereof, in which the intake pressure resonance effect is to be produced and control valves provided in the respective intake passages, the opening timing of the respective control valves being determined so as to be retarded relative to that of said respective intake ports under at least a low speed and heavy load engine operating condition.

Abstract: A turbocharged internal combustion engine in which a substantially constant output power is provided over a wide range of engine speeds. A turbocharger is utilized which provides its maximum output at an intermediate engine speed. A rotary valve is provided in the intake manifold passages for each of the cylinders of the engine. The valve is rotated at half the speed of the crankshaft with the phase of the valve controlled in accordance with a predetermined engine parameter such as the intake manifold pressure, the exhaust manifold pressure, or the speed of rotation of the engine.

Abstract: A rotary valve assembly will be utilized on internal combustion engines for regulating air-fuel mixture from a carburetor or other fuel injection system entering the cylinders of either two stroke or four stroke spark ignition engines serving to improve the part-load fuel efficiency of such engines by minimizing the pumping losses. This increase in efficiency is accomplished by substituting what is termed "time-duration-modulation" control for the present day "throttled" or "resistive" intake control now used to regulate engine power output. The rotary valve structure employs a hollow, or open sleeve, or tubular multi-port structure comprising the rotary valve, with an outlet for each cylinder, operating at fifteen (15) p.s.i. maximum differential pressure and relatively low temperatures, connected in series with presently used poppet or port type intake valves. Rotary valve timing or phase control is accomplished with a multi-pulley belt drive system.

Abstract: The device comprises a modulating device for modulating the action of a shifting device. The latter axially shifts the camshaft of the engine which camshaft varies the timing and the extent of opening of cylinder valves in accordance with its axial position. The arrangement is such that the action of the modulating device is controlled by the position of the accelerator pedal. Moreover, this arrangement constitutes the sole device for controlling the acceleration of the engine to the exclusion of an accelerator pedal-actuated throttle.