Abstract: A method for comprehensive integrated control of an internal combustion engine, such as a compression-ignition engine, utilizing an electronic control module (20) is disclosed. The control strategy integrates various functions of engine control including an acceleration balance test for the engine cylinders, a fuel economy vehicle speed limit adder, a fueling limit for high altitude vehicle operation, throttle logic, a data-hub for operation trending and vehicle component lifing analyses, a gear ratio torque limit, an air temperature based torque limit, enhanced cooling fan control, and an idle shutdown strategy based on ambient air temperature.

Abstract: An inlet for introducing raw material into a rotary drum has a chute made of a metal mantle and an inner lining of refractory material. The chute has a forward end for connecting it to the rotary drum. A hollow collar is detachably connected to the forward end of the chute so as to extend into the rotary drum. The collar is closed toward the rotary drum. The collar has surfaces facing the rotary drum. The surfaces have a heatproof, ceramic protective lining against abrasion. The collar has a back side facing the forward end of the chute. The back side has a projection for connecting the collar to the chute.

Abstract: A method of controlling fuel injection in an internal combustion engine including a crankshaft, a fuel injector, and a control unit for outputting a signal causing a fuel injection event, with a minimum time delay between the output of the signal and initiation of the fuel injection event, the method comprising the steps of sensing crankshaft position, outputting the signal, and providing an additional time delay between the output of the signal and initiation of the fuel injection event so that the signal must be output at an earlier crankshaft position than would be necessary without the additional time delay, whereby changing crankshaft speed has a greater effect on the difference between the desired crankshaft position of the fuel injection event and the actual crankshaft position of the fuel injection event.

Abstract: A fuel supply control system for an internal combustion engine installed in a vehicle controls fuel supply to the engine such that supply of fuel to the engine is interrupted when the rotational speed of the engine exceeds a first predetermined value, and the supply of fuel to the engine is resumed when the rotational speed of the engine decreases a second predetermined value which is lower than the first predetermined value. The first predetermined value is decreased when the temperature of the engine exceeds a predetermined value over a predetermined time period. The operation of at least one of accessories of the vehicle is interrupted when the first predetermined value is decreased.

Abstract: A device for determining a load signal indicating the actual air mass per stroke in an internal combustion engine based on signals which indicate the respective instantaneous air flow rate in the intake pipe, these signals being indirectly or directly summed up over a specified angular range of the crankshaft for forming the load signal. In first predetermined ranges of speeds and throttle-valve positions, the load signal serves directly as a computational basis for the quantity of fuel to be injected. In second predetermined ranges, the last value from the first ranges is subjected to a speed-dependent correction and this corrected value is used as a substitute load signal.

Abstract: A suction air control apparatus of an internal combustion engine which is subjected to an after-start lean-burn control to be operated at a lean mixture ratio rather than a theoretical mixture ratio is provided. According to the apparatus, a smooth operation of the engine in a transitional state when the after-start lean-burn control is canceled is ensured.

Abstract: A control apparatus of an internal combustion engine has: an air flow amount determining unit for determining a request intake air flow amount corresponding to a target output of an engine; a fuel flow amount determining unit for determining a request fuel flow amount to be supplied to the engine; an intake air amount limiting unit for outputting a predetermined limit value as an intake gas total amount value when the determined request intake air flow amount exceeds the predetermined limit value under a predetermined control condition; and a correcting unit for correcting the value of the request fuel flow amount so that the engine generates the target output on the basis of the request intake air flow amount and the limit intake air flow amount when the intake air amount of the engine is limited.

Abstract: In a control system for an ignition timing of an internal combustion engine and a control method for the ignition timing, a basic ignition timing of the engine is set, an engine speed is detected, a target value of the engine speed is set while the engine is in idling condition, an ignition timing correction amount is determined depending upon a difference of the target value and a detected engine speed while the engine is in idling condition, the basic ignition timing is corrected with the correction amount, and after the engine speed becomes higher than or equal to a predetermined value, the engine is controlled with the corrected ignition timing.

Abstract: A fuel supply control system for an engine comprises a fuel injector for feeding fuel into the engine, a canister for temporarily storing fuel vapor, and an air-fuel ratio sensor for sensing an air-fuel ratio of the engine. The canister is connected to an intake passage downstream of a throttle valve to purge a purge gas, that is, air containing fuel vapor, into the intake passage. An amount of fuel to be injected from the fuel injector is corrected in accordance with output a signals of the air-fuel ratio sensor to make the air-fuel ratio equal to a target air-fuel ratio. An initial value of a fuel vapor concentration coefficient, which represents a concentration of fuel vapor in air fed into the engine, is calculated in accordance with a deviation caused when the purging operation starts.

Abstract: The invention provides a method and apparatus for engine torque regulation in which, for rapid engine torque reduction, fuel injection is cut out using a cutout pattern that can be selected from a predetermined set of cutout patterns, as a function of the deviation of the engine torque. According to the invention, an engine-torque-reducing throttle position intervention is also implemented parallel to the fuel injection cutout. The difference in torque between a load-indicated actual engine torque (derived from an engine air volume measurement) and the required set engine torque can be regulated with an appropriate reduction of the degree of injection cutout in stages.

Abstract: In an internal combustion engine with direct fuel injection having a piston disposed in a cylinder and a cylinder head which together define a combustion chamber, wherein a fuel injector is mounted in the cylinder head so as to inject fuel into the combustion chamber in a conical pattern whereby the fuel is mixed with combustion air to form a combustible mixture, the cylinder head has a shape around the conical fuel pattern which aids in providing combustible fuel/air mixture at least in an area adjacent the conical fuel pattern where a spark plug with electrodes is mounted such that its electrodes are disposed outside the conical fuel pattern.

Abstract: A fuel injection control apparatus for a cylinder-injection type internal combustion engine performs a switching of fuel injection control modes in accordance with the operating state of the internal combustion engine when the engine is operating in a steady state. When the internal combustion engine is operating in a transitional state, for example, when the engine is accelerating or decelerating, a fuel injection control mode suited for the transitional operating state is selected preferentially over the mode selection for a steady state by a fuel injection control mode switching means. Consequently, the fuel injection control apparatus permits desirable operation of the internal combustion engine, making it possible to greatly improve the drivability of a vehicle in which the engine is installed.

Abstract: With an internal combustion engine wherein a throttle valve is disposed in an intake system, idle operation is carried out immediately after engine manufacture, and intake air flow rate is feedback controlled so that engine rotation speed approaches a target rotation speed. The control value when the target rotation speed is obtained is learned, and the learned result for the obtained control value is stored as an initial idle intake air flow rate adjustment value. As a result, initial fluctuations in idle intake air flow rate due to initial component and engine variations occurring at manufacture can be corrected. Hence, from the start, the idle intake air flow rate can be optimally adjusted so that the idle rotation speed rapidly converges on the target value.

Abstract: An engine operation control system which controls ignition timing is disclosed. The system fires all ignition elements simultaneously, at least one of the ignition elements being fired effectively and all other ignition elements fired ineffectively in accordance with a first firing advance, and at least another of the ignition elements fired effectively and all other ignition elements ineffectively in accordance with a second firing advance, the first and second firing advances being determined independently of one another in order that the timing of the effective firing of each ignition element is optimized.

Abstract: Disclosed is a throttle valve control device for internal combustion engines which has good measuring accuracy and improved controllability of an air flow rate. A throttle valve is rotatably attached to a throttle body through a throttle shaft. The throttle body has an inner surface of straight bore type that the center of rotation of the throttle valve is positioned on a line connecting the centers of an upstream opening and a downstream opening of the throttle body. The throttle body has a spherical inner surface X2 in an idle speed control area .theta.2 near the fully closed angle of the throttle valve. The throttle body also has, in an area .theta. subsequent to the spherical inner surface X2, an inner surface X3 having a composite form made up of a spherical surface and a cylindrical surface substantially parallel to a flow of intake air.

Abstract: In a process for controlling the warm-up in an internal combustion engine, the combustion chamber pressure is evaluated, so that the warm-up period is divided into first and second phases that are controlled differently.

Abstract: A shroud member for converting an extending tip fuel injector into an air assist fuel injector wherein the air metering is performed at a distance remote from the O-ring seals holding the injector into the engine manifold.

Abstract: A method and system for controlling combustion stability for a lean-burn engine having a plurality of cylinders including a plurality of cylinder pairs utilizes a speed sensor for sensing an engine speed and generating a corresponding temperature signal and an air flow sensor for sensing a cylinder air mass and generating a corresponding air mass signal. An average event time for each of the plurality of cylinders is determined, as well as an instantaneous variation in event times between each of the plurality of cylinder pairs. An actual level of engine roughness is determined based on the variation in instantaneous event times from the average event times. A desired level of engine roughness is determined based on the speed signal, the air mass signal, and a desired air/fuel ratio.

Abstract: A fuel control system is provided for use with an internal combustion engine having at least one cylinder, a source of gaseous fuel and an intake passageway for fluidly connecting the air intake to the combustion cylinder. The control system includes a gas flow rate sensor which generates an output signal representative of the fuel flow rate to the engine as well as a mass air flow sensor which generates a signal representative of the mass air flow rate to the engine. A fuel valve is fluidly connected in series between the source of gaseous fuel and the air intake passageway. The fuel valve is actuated by an electrical pulse stream between an open and a closed position so that the duty cycle of the pulse stream is proportional to the amount of fuel supplied to the engine. In response to the fuel flow rate signal, the air flow rate signal and a target air/fuel ratio, the control system generates PID gain scheduling parameters relative to the duty cycle of the pulse stream.

Abstract: An engine measurement and control methodology wherein the engine combustion rate and IMEP are measured by measuring the in-cylinder pressure at specific crank angles and utilizing a basic reading of pressure in the combustion chamber when it will be near to atmospheric, and also at at least one point in time after ignition begins and before top dead center. The measured data can be employed for fine tuning the engine control to obtain optimum performance.