Abstract: On recognition of a slow driving condition within which a creeping function is activated, a set wheel torque is derived by a wheel torque interpretation (56), such that firstly a target speed is achieved and subsequently the vehicle is maintained within a speed range about the target speed.

Abstract: An electrical power generating system and method wherein a generator is driven by an air-breathing engine. At any operating condition, for a given power output the engine efficiency is substantially optimized by controlling the rate of air flow through the engine in such a manner that the fuel/air ratio is controlled to maintain a high peak temperature imparted to the working fluid in the engine. The method and system of the invention eliminate the need for variable-geometry mechanisms in the engine, and also eliminate the need for variable-geometry combustors and pre-burners. The invention is applicable to various types of air-breathing engines that operate at low fuel/air ratios.

Abstract: A method and an arrangement control the output quantity (NMOTACT) of a drive unit (1) of a vehicle. The method and arrangement make possible a time-optimal control strategy especially during a shift operation of the vehicle. The output quantity (NMOTACT) is adjusted with the aid of an adjusting quantity (MDES) and tracks an input value (NMOTDES). In at least one pregiven operating state of the vehicle, the actuating quantity (NMOTDES) is brought to a pregiven limit value (MO, MU) when a pregiven control deviation (dnv) of the output quantity (NMOTACT) is exceeded.

Abstract: A method of testing a shut down system for an electronically controlled diesel engine including the steps of changing the primary or main rating to a test rating that runs at reduced nominal horsepower and at speeds higher than the overspeed trigger point to actuate the shut down system during the test.

Abstract: An engine torque control apparatus for controlling the output torque of an engine (60) connected to a transmission (40) in a vehicle has a temperature sensor (55) for detecting the temperature of oil used by the transmission (40), and a controller (50) for limiting the output torque of the engine to an engine torque limit or less. The controller (50) functions to compare the oil temperature with a specific temperature, to set the engine torque limit to a first limiting value when the oil temperature is equal to or less than the specific temperature, and to increase the engine torque limit at a predetermined increase rate when the oil temperature exceeds the specific temperature.

Abstract: An engine includes an improved sensor arrangement that can decrease the possibility of damage to sensors relating to fuel injection control. The engine includes a cylinder block defining first and second banks of cylinder bores extending separately from each other. Pistons reciprocate within the respective cylinder bores. Cylinder head members are arranged to close respective ends of the first and second banks of the cylinder bores. The cylinder head members define combustion chambers together with the cylinder bores and the pistons. An air induction system is arranged to introduce air to the combustion chambers. The induction system includes first and second intake units with the first intake unit allotted to the first cylinder bank and with the second intake unit allotted to the second cylinder bank. The first and second intake units define first and second intake passages, respectively, through which the air flows. Fuel injectors are arranged to spray fuel for combustion in the combustion chambers.

Abstract: A method of controlling torque output of an engine including receiving an acceleration pedal position signal and receiving an engine speed signal. The method also includes calculating a modified engine speed signal as a function of the engine speed signal and the acceleration pedal position signal. The method further includes requesting engine output torque as a function of the acceleration pedal position signal and the modified engine speed signal.

Abstract: An output power controlling apparatus and a method for reducing vibration caused by accelerating or shifting gearing in a vehicle includes a vibration component prediction section/step for predicting a vibration component to be generated on the vehicle from the target torque correlation value using a predetermined prediction model, and a feedback correction section/step for feedback correcting the target torque correlation value based on the predicted vibration component to suppress vibration.

Abstract: A method and an arrangement for controlling a drive unit are suggested wherein a maximum permissible value of an output quantity is determined. This maximum permissible value is compared to the actual value and, when the permissible value is exceeded by the actual value, reaction measures are initiated. The maximum permissible value is filtered at least in one operating state in accordance with filter means including a filter and a dead zone member. Furthermore, the maximum permissible value is continuously reduced in dependence upon the approaching of at least one quantity to a limit value. This quantity represents an operating state.

Abstract: An apparatus and method for reducing or eliminating wetstacking in internal combustion engine systems operating substantially under capacity comprising establishing an exhaust temperature minimum set point, monitoring exhaust temperature of an engine; and restricting air intake into the engine when the temperature is below the set point. Intake air may also be heated when the exhaust temperature is below the set point, with the intake air divided into first and second paths, the first path being restricted and the second path being heated. The second path preferably comprises a fixed flow choke.

Abstract: A method and system may be provided to perform a process for controlling power provided by an engine in a machine. In an embodiment of the present invention, a process for controlling power provided by an engine operating in a machine is provided. The process may include determining a first power value reflecting a predetermined first power to be provided by the engine to a component operating in the machine and determining, during machine operations, at least one of a parasitic load power value and an intermittent power load value. A second power value may then be determined that reflects a second power provided by the engine based on the parasitic power value, the intermittent power value, and the net power value. The second power value is adjusted such that the engine substantially provides the predetermined net power to the component.

Abstract: A method for controlling the speed of a torque-controlled internal combustion engine in which the generation of the drive torque is regulated by actuators which are controlled from a control value of the instantaneous torque and by a control value of the predicted torque, the method providing for the calculation of an objective value of the speed, the calculation of an objective value of the torque reserve, the calculation of an objective value of the potential torque on the basis of the objective value of the torque reserve, the generation of the control value of the instantaneous torque by means of a first feedback control loop which uses as input the objective value of the speed, and the generation of the control value of the predicted torque by means of a second feedback control loop which uses as input the objective value of the potential torque.

Abstract: A method and a device for controlling an internal combustion engine of a vehicle, in which a performance quantity of the internal combustion engine or of the vehicle is limited to a predefined limit value. For the limiting, a control of the air supply to the internal combustion engine is permitted first, while a control of the ignition angle is permitted subsequently.

Abstract: An object of the present invention is to provide a control device for a throttle valve which, by dispensing a position sensor for the throttle valve, can reduce a cost of the sensor and which is excellent in durability and reliability and is reduced in its control delay. The control device includes an air flow sensor 1 for detecting an air flow rate flowing through a intake pipe of an internal combustion engine, a motor 33 for driving the throttle valve 2 disposed in the intake pipe and an ECU 15 for controlling the driving operation of the motor. The ECU 100 feedback-controls the output of the air flow sensor so that a difference between the output of the air flow sensor 1 and an air flow rate required for the engine reduces.

Abstract: To avoid a sudden change in torque when switching over the valve lift of discretely adjustable inlet valves, the valve lift is firstly only adjusted for a section of cylinders, while the valve lift for the remaining section of cylinders is switched over after a delay. Therefore with each valve lift adjustment, only a slight change in torque has to be compensated by means of a corresponding change in the efficiency of the cylinders.

Abstract: A control system for protecting an internal combustion engine from overloading. The output of the internal combustion engine is adjusted with an output-determining signal according to an input signal which characterizes the desired output. According to the invention, a differential torque is calculated from the current motor torque and a maximum permissible motor torque. The differential torque in turn determines an authoritative second signal. A first signal that is determined from an input signal characterizing the desired output and the second signal are directed to a selector which selects the first or second signal as the signal that determines the output.

Abstract: A control system parameter monitor determines a difference between a desired and estimated or measured parameter value, applies a weighting factor to the difference, and selects a control strategy based on the weighted difference. The weighting factor generally reflects the confidence in the accuracy of the parameter value determined by the parameter monitor. The weighting factor may be determined based on one or more engine or ambient operating conditions or parameters, or based on statistical analyses of monitor values and/or control system parameter values, for example. In one embodiment, an engine torque monitor for an electronic throttle control system uses percent torque deviation and rate of change to select an appropriate weighting factor and determine whether a deviation between desired and estimated or measured torque selects an alternative control strategy.

Abstract: A system for discriminating malfunction of a radiator of an internal combustion engine, in which conditions for execution of malfunction discrimination of the radiator are decided to be established, when a decline amount of outside air temperature is less than a threshold value, and the malfunction discrimination is conducted by comparing an estimated and detected coolant temperatures with predetermined values. In the system, making the decision that the conditions are not established is prevented, utilizing a parameter related to a quantity of intake air. With this, it becomes possible to inhibit decisions finding that the conditions are not established in certain cases in which such a decision would ordinarily be unreasonably made, such as when the internal combustion engine is started while still insufficiently soaked, etc.

Abstract: To provide an electronic throttle valve control apparatus which has a high throttle valve opening resolution, and which can be manufactured at a low cost. The apparatus for controlling an electronic throttle valve in which a throttle valve provided in a suction path of an engine is driven to be opened and closed by a motor, includes: a target throttle opening computation unit for computing a target throttle opening of the throttle valve; an actual throttle opening detector for detecting an actual opening of the throttle valve; a control-use actual throttle opening computation unit for computing a control-use actual throttle opening by adding a predetermined number of times the actual throttle opening detected value obtained by the actual throttle opening detector; and a throttle valve controller for controlling the throttle valve on the basis of an opening deviation between the target throttle opening and the control-use actual throttle opening.

Abstract: A method and an arrangement for operating a drive motor of a vehicle are suggested. A resulting desired torque for controlling the drive motor is pregiven in dependence upon the driver command torque and additional desired torque quantities. To limit the resulting desired torque, a motor minimum torque is provided which is derived from the lost torques and is dependent upon rpm.

Abstract: A computer controller is described for disabling fuel injection into cylinder groups of an engine. The system controls engine output a reduced engine torques without reducing engine air amounts below an engine misfire amount by reducing the number of cylinders carrying out combustion. Engine airflow is controlled to maintain accurate torque at requested levels throughout engine operating ranges.

Abstract: A method and a device for controlling the drive unit of a vehicle are provided, in which, in addition to the selection variable for an output variable of the drive unit, another setpoint variable representing the required dynamic setting of the output variable is preselected. The manipulated variable of the drive unit to be influenced is selected on the basis of the selection variable and the additional setpoint variable.

Abstract: In a method for setting torque in the operation of a motor vehicle, especially in the case of a small engine torque change in the lower to medium load range, the driver-selected torque is magnified dynamically in time, and the enhancement component is then correspondingly reduced down to an enhancement component of zero as the actual value of the torque approaches the driver-selected torque. An increase in responsiveness and a better response behavior are achieved in response to small accelerator pedal movements.

Abstract: A vehicle having an adaptive cruise control system with a method for determining an optimum deceleration amount for a host vehicle when approaching an in-path vehicle. This includes determining a relative speed between the vehicles, as well as estimating the deceleration for each. An optimal deceleration estimator calculates the instantaneous amount of deceleration needed to match the host vehicle speed with the in-path vehicle speed at a desired future range between the host vehicle and the in-path vehicle. A deceleration limiter can then use the output from the deceleration estimator to determine an optimum deceleration for the vehicle systems to initiate.

Abstract: A method and a device for controlling the drive unit of a vehicle are provided, setpoint selection variables and characteristic variables being received, which represent the way the setpoint selection variable is set. In a coordinator, setpoint selection variables and characteristic variables are coordinated independently from one another and one of the variables is selected, on which the control of the drive unit is based. In a converter, the selected setpoint selection variable and characteristic variable are converted into control signals, the control signals being selected on the basis of the setpoint selection variable and the characteristic variable, optionally considering further operating variables, for example, the operating state of the drive unit.

Abstract: An electronic engine control is provided that compensates the engine's power output capability based on the parasitic power load demands.

Abstract: A method and a device for controlling an output variable of a drive unit in the starting phase is described. A controller is provided, regulating the actual value of at least one output variable to a setpoint variable of this output variable which is specified as a function of time. When at least one condition marking entry into the starting phase exists, the setpoint value of the output variable is initialized with the actual value of the output variable.

Abstract: An engine control system for maintaining the operator-commanded speed setting of an internal combustion engine over a range of engine loads and for easy starting and improved efficiency over a range of ambient and engine operating temperatures. The engine control system includes a governor assembly driven by the engine, the governor assembly supplying an output to a sensor assembly through a mechanical coupling member operator. The sensor assembly provides an engine speed control signal which corresponds to operator commanded engine speed and actual engine speed. The engine speed control signal is provided to a throttle actuator and/or a fuel control device in a manner in which the actual engine speed is controlled to correspond with the operator-commanded engine speed regardless of loads imposed on the engine. The fuel control device may include, for example, a fuel pump driven by a variable speed electric motor or a solenoid controlled variable fuel pressure regulator.

Abstract: A hybrid automobile runs by transmitting a power from an engine and a power from a motor-generator MG2, and can store a part of the power from the engine and an electric power generated by a motor-generator MG1. In this hybrid automobile, a power requirement Pr* of a drive shaft is set based on an accelerator opening, and a battery charge electric power Pbi is set based on SOC, and the sum of the power requirement Pr* and the battery charge electric power Pbi are set as an engine target power Pe*. When the engine target power Pe* is less than a predetermined minimum value Plow, the engine target power Pe* is changed to the minimum value Plow. Further, in accordance with this change, the battery charge electric power Pbi is also changed, and the engine and the motor-generators MG1, MG2 are operated.

Abstract: An engine torque control apparatus for controlling the output torque of an engine (60) connected to a transmission (40) in a vehicle has a temperature sensor (55) for detecting the temperature of oil used by the transmission (40), and a controller (50) for limiting the output torque of the engine to an engine torque limit or less. The controller (50) functions to compare the oil temperature with a specific temperature, to set the engine torque limit to a first limiting value when the oil temperature is equal to or less than the specific temperature, and to increase the engine torque limit at a predetermined increase rate when the oil temperature exceeds the specific temperature.

Abstract: An air flow sensor for an internal combustion engine is disclosed. An air flow rate measurement meter, a pressure gauge, electronically controlled throttle body, and the microcomputer, etc. are integrated as one body, and the correction of the air flow rate, the control, and the fault diagnosis, etc. are done in the integrated microcomputer.

Abstract: A vehicle speed control system for a vehicle comprises a lateral acceleration sensor, a vehicle speed sensor, a target vehicle speed setting device, a drive system of the vehicle, and a controller connected. The controller is arranged to calculate a correction quantity on the basis of the lateral acceleration and the vehicle speed, to calculate a command vehicle speed on the basis of the vehicle speed, the target vehicle speed, a variation of the command vehicle speed and the correction quantity, and to control the drive system to bring the vehicle speed closer to the command vehicles speed.

Abstract: A method and an arrangement for controlling the speed of a vehicle make possible a comfortable adaptation of an incrementation or decrementation of a pregiven desired speed. The desired speed is changed by the actuation of an operator-controlled element (1). The extent of the change of the desired speed is adjusted in dependence upon at least one piece of data as to the instantaneous driving situation of the vehicle.

Abstract: Method for estimation of the quantity of fresh air present in the intake and exhaust manifolds of an internal combustion engine with a recirculation circuit, by an observer, applied to a system of the third order, which models the physical system constituted by the intake and exhaust manifolds; the system is obtained from differential equations, which regulate the processes of mixing of the gases, and from an equation which represents the behavior of a lambda sensor.

Abstract: A method for operating an internal combustion engine includes the steps of determining a pressure in a suction portion from a position of a throttle flap, passing a signal produced from the position of the throttle flap through a delay element, using the passed signal for forming a limit for a permissible value region, utilizing as the delay means mechanism at least two delay elements, such that a delay of one of the delay elements is switched off when a speed with which the position of the throttle valve changes lies above a positive limiting value, and the delay of the other delay element is switched off when the speed with which the position of the throttle valve changes lies below a negative limiting value.

Abstract: A diagnostic function for an internal-combustion engine whose power is set by way of a power-determining signal that is determined from a first signal from a determination device, and a second signal determined by a torque controller, based on engine torque. A selection device sets either the determination device or the torque controller to be dominant for the power determining signal. When the values of the engine torque are not plausible, an error mode is set. With the setting of the error mode, the dominance is retained when the determination device is dominant. When the torque controller is dominant, a change of the dominance takes place.

Abstract: A fuel injector (1), in particular for the direct injection of fuel into a combustion chamber of an internal combustion engine, has a valve needle, (3) that has at its injector end a valve-closure member (4) that works together with a valve-seat surface (6), formed on a valve-seat member (5), to form a sealing seat, and has at least one swirl duct (37, 40), a swirl chamber (36) formed on the valve-seat member (5), and a plurality of injection openings (7) that open out from the swirl chamber (36), through which the fuel, provided with a swirl, is simultaneously injected. The at least one swirl duct (37, 40) is formed in the valve-seat member (5) or in a swirl disk (39) adjacent to the valve-seat member (5).

Abstract: A method for characterizing an air flow target within an internal combustion engine. The method includes determining an air mass flow rate target, determining an engine speed term, and processing these terms to obtain an air flow target. The air flow target can be used as an input for vehicle controllers including those for controlling pressurized induction systems.

Abstract: Proposed is a method and a device for controlling the drive unit of a vehicle. In this context, at least one correction variable of the drive unit is set as a function of a setpoint value for an output variable of the drive unit, and as a function of a setpoint correction time, which represents the time in which the setpoint value for the output variable must be attained.

Abstract: An engine control system calculates air velocity through a throttle body as a function of mass air flow through the throttle body, air density, and the effective area of air flow through the throttle body as a function of throttle plate position. Mass air flow is calculated as a function of the effective area through the throttle body, barometric pressure, manifold pressure, manifold temperature, the ideal gas constant, and the ratio of specific heats for air. By controlling the throttle plate position as a dual function of throttle demand, which is a manual input, and air velocity through the throttle body, certain disadvantages transient behavior of the engine can be avoided.

Abstract: Automotive control system designed to control a plurality of controlled elements installed in the vehicle is provided. The control system includes control circuits and a manager circuit. The control circuits are designed to perform given control tasks using pre-defined controlled variables. The manager circuit is designed to determine a target value of a preselected output parameter of at least one of the controlled elements in the form of a second controlled variable different from one of the controlled variables employed in the control circuit for the one of the controlled elements. The control system also includes an adaptor designed to translate the second controlled variable indicative of the target value of the output parameter into a value of the corresponding controlled variable. This allows the control system to be constructed easily without redesigning typical controlled elements.

Abstract: A basic target excess air factor tLAMBDA0 and a target fresh air intake amount tQac are set base upon the operation condition of an engine (30). A target excess air factor tLAMBDA is calculated by multiplying the ratio of a real fresh air intake amount rQac as detected by a sensor (16) and the target fresh air intake amount tQac by the basic target excess air factor tLAMBDA0. A fuel injector (9) is controlled so that the amount of fuel injected thereby converges to a target fuel injection amount tQf which corresponds to the target excess air factor tLAMBDA. It is possible to prevent variation of the output torque of the engine (30) accompanying a rich spike by this control, even if the basic target excess air factor tLAMBDA0 varies abruptly, since the fuel injection amount varies in correspondence to the variation of the real fresh air intake amount rQac.

Abstract: A method for characterizing an air mass flow rate target within an internal combustion engine. The method includes determining a reference air mass flow rate term, determining a predicted compressibility term, and processing these terms to determine an air mass flow rate target. The air mass flow rate term can be used as an input for vehicle controllers including those for controlling pressurized induction systems.

Abstract: An engine control system for diminishing driveline vibrations extracts resonant frequency component coincident in frequency with a driveline resonant vibration according to a gear ratio of a transmission of the driveline from a change in charging efficiency with time that is detected on the basis of a signal representative of an amount of intake air, converts the resonant frequency component to a demanded amount of engine torque reduction after having adjusted the resonant frequency component in phase, and causes the demanded amount of engine torque reduction by retarding an ignition timing and/or reducing an amount of fuel injection.

Abstract: To provide an electronic throttle valve control apparatus which has a high throttle valve opening resolution, and which can be manufactured at a low cost. The apparatus for controlling an electronic throttle valve in which a throttle valve provided in a suction path of an engine is driven to be opened and closed by a motor, includes: a target throttle opening computation unit for computing a target throttle opening of the throttle valve; an actual throttle opening detector for detecting an actual opening of the throttle valve; a control-use actual throttle opening computation unit for computing a control-use actual throttle opening by adding a predetermined number of times the actual throttle opening detected value obtained by the actual throttle opening detector; and a throttle valve controller for controlling the throttle valve on the basis of an opening deviation between the target throttle opening and the control-use actual throttle opening.

Abstract: In order to provide an internal combustion engine control unit for a jet propulsion type watercraft which can control an internal combustion engine so that a rider can perform risk avoidance safely, a throttle open degree detector 22 which detects a state of the throttle operated by a rider, and a controller 300 which, when the throttle open degree detected by the throttle open degree detector 22 is a predetermined value or lower, keeps the rotation speed of the internal combustion engine 2 at a predetermined value for a predetermined period of time after the throttle open degree has reached the predetermined value or lower, are provided.

Abstract: In an engine controller with a feed back control system, an instruction signal for controlling an engine condition adjusting device is determined on the basis of a comparison between an input signal corresponding to a desired engine condition and an actual engine condition signal when the engine controller, the engine condition adjusting device and a sensor for generating the actual engine condition signal operates normally, and is determined on the basis of the input signal while preventing the instruction signal from being determined on the basis of the comparison between the input signal and the actual engine condition signal when an abnormality of at least one of the engine controller, the engine condition adjusting device and the sensor is detected.

Abstract: A method and apparatus compensates throttle area in an engine control system with an electronic throttle using intake diagnostic residuals. A plurality of tables relate throttle area, breakpoint numbers, flow loss factors and residual values. At least one of the tables is updated based on the intake diagnostic residuals to generate a compensated throttle area.

Abstract: A method and an arrangement for controlling the drive unit of a vehicle are suggested. A decentral torque coordination is provided. In addition to the resulting input quantity of the first coordinator, also, if required, resulting minimum quantities and/or maximum quantities are transmitted from a first coordinator to a second coordinator.

Abstract: A method and an arrangement for controlling a drive unit are suggested wherein a maximum permissible value of an output quantity is determined. This maximum permissible value is compared to the actual value and, when the permissible value is exceeded by the actual value, reaction measures are initiated. The maximum permissible value is filtered at least in one operating state in accordance with filter means including a filter and a dead zone member. Furthermore, the maximum permissible value is continuously reduced in dependence upon the approaching of at least one quantity to a limit value. This quantity represents an operating state.