Abstract: A method and a device for operating an internal combustion engine are provided which make it possible to implement different deceleration requests to the internal combustion engine by switching over between half engine operation and full engine operation. A deceleration request is received particularly in a nonoperating state. A switchover is made between a first operating state and a second operating state of the internal combustion engine as a function of the magnitude of the deceleration request. The first operating state and the second operating state differ, in this instance, in the number of cylinders whose charge changing process is interrupted.

Abstract: A method for controlling a homogeneous-charge compression-ignition capable engine, operating with spray-guided spark ignition stratified combustion at low load, includes monitoring a speed of the engine, monitoring a load of the engine, determining a desired fuel pressure based upon the speed of the engine and the load of the engine, and utilizing the desired fuel pressure to control fuel injection into the engine, wherein the desired fuel pressure is calibrated to the speed and the load based upon increased stability of the engine at lower fuel pressures and lower soot emissions from the engine at higher fuel pressures.

Abstract: An engine ECU executes a program including: a step of estimating the occluded amount of NOx if an engine is self-rotating and a catalyst temperature is equal to or higher than a predetermined temperature Ta(0); and a step of performing NOx reduction treatment if the estimated occluded amount of NOx is equal to or more than a predetermined amount.

Abstract: An engine control system of the present disclosure comprises a target speed module and a coupling module. The target speed module determines a target speed of a vehicle based on a speed of the vehicle and at least one of an accelerator input and a speed control input. The coupling module controls coupling of an engine system and a drive system of the vehicle based on the speed and the target speed. The engine system transfers torque to the drive system when coupled and does not transfer torque to the drive system when decoupled. In other features, the engine control system further comprises a torque control module that controls torque output by the engine system based on the coupling of the engine system and the drive system, the speed, and the target speed.

Abstract: An apparatus for and a method of controlling a fuel injection in which, in fuel injection control of an engine including a variable valve mechanism that can change an inlet valve opening characteristic, when an intake air amount is changed by an operation of the variable valve mechanism after the fuel injection valve performs first injection, a fuel amount corresponding to the change in intake air amount is injected in second injection after the first injection, and the sum of the fuel amount injected in the first injection and the fuel amount injected in the second injection becomes a fuel amount corresponding to an intake air amount fixed at an inlet valve closing timing.

Abstract: A system for controlling fuel to an engine to minimize emissions in an exhaust of the engine. There may be a controller connected to an actuator, for example a fuel control actuator, of the engine and to emissions sensors, such as an NOx and/or PM sensor, proximate to an exhaust output of the engine. The controller, for example a speed controller, may have an input connected to an output of a pedal or desired speed setting mechanism. A speed sensor at a power output of the engine may be connected to an input of the controller.

Abstract: A rotational speed parameter is detected in accordance with a rotational speed of the engine. A reference value of the rotational speed parameter is calculated. For each cylinder, an error between the reference value and the rotational speed parameter detected every predetermined crank angle is calculated as a relative speed parameter. For each cylinder, an integrated value is calculated by integrating the relative speed parameters over a predetermined period. For each cylinder, an average value per cylinder of the sum of the integrated values of all the cylinders is calculated. For each cylinder, an error between the integrated value of the cylinder and the average value is calculated. For each cylinder, the output of the engine is controlled in accordance with the error calculated for the cylinder such that variations in the output between the cylinders are suppressed.

Abstract: A power train is provided having an engine operably coupled to a transmission. The power train also has at least one operator interface device, each operator interface device being configured to generate an operator request. In addition, the power train has a controller configured to, in response to a first operator request, override a second operator request for a desired target engine speed by lowering a current engine speed to a modified target engine speed below the desired target engine speed.

Abstract: A motorcycle includes an engine in which angle intervals of crank angles respectively corresponding to expansion strokes of a plurality of cylinders are unequal, a motor configured to generate a torque applied to a driving power transmission system including a crankshaft of the engine, and a motor controller configured to drive the motor to add the torque of the motor to a torque of the engine.

Abstract: A fuel control device for an internal combustion engine determines that the internal combustion engine is in a transient state, by a criterion D, and makes fuel correction, where the transient-state criterion D is set to be a more relaxed criterion (=|?THaf|) when forcible modulation control is being performed, compared with a normal criterion (=|?THn|) used when the forcible modulation control is not being performed.

Abstract: A method for operating a speed-controlled internal combustion engine, including regulating the rotational speed of the internal combustion engine, information concerning a torque to be set being provided as a manipulated variable, limiting the manipulated variable according to a torque limiting value in order to obtain a limited manipulated variable, activating the internal combustion engine as a function of the limited manipulated variable, and increasing the air volume fed to the internal combustion engine for achieving the torque to be set irrespective of the torque limiting value.

Abstract: When an engine torque trace is set during acceleration or deceleration, the ratio of increase or decrease in the engine torque per unit time is restricted so that when the engine torque generated during acceleration or deceleration approaches an engine torque (balance torque) at which the engine is oriented upright with respect to the engine mount, the engine torque stays near the balance torque for a prescribed time.

Abstract: A control apparatus of an internal combustion engine includes an idle torque calculating portion, a target torque setting portion, and a target throttle opening amount calculating portion. The idle torque calculating portion and the target throttle opening amount calculating portion calculate the idle torque and the target throttle opening amount when the internal combustion engine is in a non-idling state, respectively, using a common physical quantity relating to an operating state of the internal combustion engine.

Abstract: A control system for an internal combustion engine calculates a provisional target value of the throttle opening in accordance with an accelerator pedal travel, upon detection of a sudden operation of the accelerator pedal. The system also calculates a target pressure change in the surge tank according to the provisional target value, on the basis of the actual surge tank pressure and the cylinder intake mass airflow, using a virtual intake system model. The control system sets a target throttle opening in accordance with the surge tank pressure and the cylinder intake mass airflow, so as to provide the target pressure change under a condition of the actual surge tank volume.

Abstract: An energy-saving driving promotion system includes: a vehicle state detecting device; a current value calculating device that calculates a current value associated with an accelerator operation amount or a vehicle drive power; a recommended value calculating device that calculates a recommended value associated with the accelerator operation amount or the vehicle drive power; an indicator device that indicates a relationship between the calculated recommended value and the calculated current value; and an acceleration intention determining device that determines whether a driver intends to accelerate. If the acceleration intention determining device determines that the driver intends to accelerate, the recommended value calculating device calculates a larger recommended value when the acceleration intention determining device determines that the driver intends to accelerate than when the acceleration intention determining device determines that the driver does not intend to accelerate.

Abstract: A motorcycle includes a transmission, a CPU, an engine, a load sensor and a notification lamp. The load sensor detects a shift operation by a driver. When the shift operation is performed by the driver, an output of the engine is adjusted by the CPU so that a torque (driving force) transmitted between the engine and the transmission is reduced. The CPU does not adjust the output when the torque is transmitted from the transmission to the engine when an up-shifting operation is performed by the driver. Moreover, a notification lamp is lit by the CPU when the torque having at least a predetermined value is transmitted from the transmission to the engine when the up-shifting operation is performed by the driver.

Abstract: A boat has a propulsion unit and a steering system. The steering system includes a steering device actuated by an electric actuator. A steering wheel operated by an operator is electrically connected to the actuator. Detectors collect data regarding one or more of operation status of the steering wheel, running status of the boat, status of the propulsion unit, status of the electric actuator, and the like. In certain situations, the electric actuator may not be capable of providing a quick steering response. A controller weighs detected data to identify such situations and controls a propulsive force of the propulsion unit so as to restrain the propulsive force if necessary to maintain good steering response.

Abstract: A straddle-type vehicle includes an engine, an air intake pipe, a throttle valve being controlled in accordance with an operation amount of an accelerator grip, an engine rotating speed detector or a vehicle speed detector, and an electronic control unit (ECU). The ECU increases the opening degree of the throttle valve or maintains the opening degree at a constant value until the engine rotating speed reaches a set rotating speed which is smaller than a prescribed rotating speed, but if the engine rotating speed exceeds the set rotating speed, the ECU reduces the opening degree of the throttle valve irrespective of operation of the accelerator grip.

Abstract: In a cruise controller for a saddle-seat vehicle, it is configured to comprise desired throttle opening control execution means (ECU 110) for executing desired throttle opening control by operating the actuator (74) such that the actual throttle opening becomes the desired throttle opening, determine whether the throttle opening command APS is in a predetermined relationship with the actual throttle opening TPS (S60), and switch the cruise control to the desired throttle opening control (S50) when it is discriminated that they are in the predetermined relationship and a disable condition has been established (S62 to S66). By suitably setting the predetermined relationship, the cruise control can be disabled and shifted to the desired throttle opening control at the actual throttle opening anticipatable by the operator, so that driving feel is not impaired and no unnecessary engine output is produced upon switching to the desired throttle opening control.

Abstract: The vehicle state value detecting device includes a first low pass filter (32, 36) and a second low pass filter (33, 37) having a lower cutoff frequency than the first low pass filter. The device processes a detection signal of a sensor (10, 11) for a motion control of a vehicle such as a yaw rate sensor and a lateral G sensor by selectively using one of the two low pass filters. A signal selecting unit (35, 39) selects the output of the first low pass filter when the control process demands prompt detection of an abrupt changes in the behavior of the vehicle and the output of the second low pass filter when it is not the case and an enhanced stability of the control action has a priority.

Abstract: Various systems and methods are described for operating an engine in a vehicle in response to fuel having varying amounts of alcohol. One example method comprises delivering fuel to the engine, limiting engine speed during vehicle operation to a maximum permitted engine speed, the maximum permitted engine speed responsive to the amount of alcohol in the fuel.

Abstract: In an apparatus for controlling a general-purpose internal combustion engine having an electronic control unit (ECU) mounted on an electronic circuit board installed near a body of the engine and being connectable to a load such as an operating machine that consumes power generated by the engine, there are equipped with a first temperature sensor installed on the board at a position remote from the body and a second temperature sensor installed on the board at a position closer to the body than the first temperature sensor. A warm-up time period is determined based on an output of the first temperature sensor and a difference between outputs of the first and second temperature sensors, and an engine speed is controlled to a predetermined operating speed when the determined warm-up time period has elapsed (S18, S22), thereby improving the fuel efficiency and preventing engine stall.

Abstract: A method of adjusting the operation of an engine-driven machine to avoid engine under-speeding entails converting a received speed or torque command into a power command. When an engine under-speed condition is sensed, the system performs underspeed correction in the power domain before converting the underspeed processed power command back into the units of the original domain. The converted underspeed processed power command is issued to the transmission or other component to alleviate the engine under-speeding condition.

Abstract: A method of operating an engine is provided. The engine includes at least one cylinder communicating with an intake manifold via an intake manifold valve and an exhaust manifold via an exhaust manifold valve, the cylinder including a piston arranged within the cylinder, wherein the piston is coupled to a crankshaft of the engine. The method comprises discontinuing combustion in the cylinder during a plurality of cycles of the engine; during the plurality of cycles, operating the exhaust manifold valve and the intake manifold valve to provide a net flow of gases from the exhaust manifold to the intake manifold via the cylinder and adjusting a torque signature provided to the crankshaft during each cycle by the piston responsive to an operating condition.

Abstract: A power boost system and method. An illustrative embodiment of the power boost system includes an operator interface having a system activation button; a vehicle system controller connected to the operator interface; and at least one of an engine system controller, a battery system controller and an accessory system controller connected to the vehicle system controller.

Abstract: A control for an engine having a variable valve actuation mechanism is provided. A map indicating a correlation among a rotational speed, a gauge pressure of an intake manifold, a lift amount of an intake valve, a phase of the intake valve and an intake air amount of the engine under a reference condition of a predetermined reference atmospheric pressure and a predetermined reference intake air temperature is defined. An intake air amount for the reference condition is determined as a reference intake air amount by referring to the map based on a current rotational speed, a current gauge pressure, a current lift amount and a current phase. The reference intake air amount is corrected with a ratio between an air density under a current condition of a current atmospheric pressure, a current intake air temperature and a current gauge pressure and an air density under the reference condition to calculate an intake air amount for the current condition.

Abstract: An ECU executes a program including the steps of: detecting engine speed NE based on a signal transmitted from an engine speed sensor; calculating engine speed NE with dead time of the engine with respect to a target output torque removed; calculating engine speed NE reflecting the dead time of the engine with respect to the target output torque; correcting the actual engine speed NE in accordance with a difference between the engine speed with dead time removed and the engine speed reflecting the dead time; and setting the target value of output torque in accordance with the corrected engine speed NE.

Abstract: A device for controlling an internal combustion engine of a motor vehicle, including a control unit for monitoring and limiting the rotational speed of the internal combustion engine that are designed in such a manner that after a predetermined first speed threshold an integral formation of the current present values over time occurs, and that, on reaching a predetermined integral limit value, the rotational speed is automatically limited.

Abstract: A system and method for controlling a vehicle engine during one or more performance driving events, such as a performance takeoff, shifting or cornering event. The engine control system may be used to maintain stability when the vehicle is being driven in a competitive or aggressive fashion by temporarily controlling the vehicle engine through the manipulation of engine torque, engine speed or some other means. If the engine control system receives competing command signals from different vehicle subsystems, then the system may arbitrate or otherwise manage the competing command signals so that different subsystems can function together properly. In one embodiment, the engine control system blends the commands signals from two or more subsystems.

Abstract: A driving amount controller is provided for a vehicle. An ECU on the vehicle reduces a damping output Udamp when the deviation e between the target opening DTHR of the throttle valve and the actual opening DTH is near zero or when a switching function value ? is near zero. This makes it possible to reduce the damping output Udamp immediately after the start of, or immediately before the end of, the control of the opening of the throttle valve when the deviation e or the switching function value ? is near zero, and to realize a high response performance as to the control of the actual opening DTH of the throttle valve.

Abstract: An apparatus for providing an antisurge operating mode for a turbocharged engine may include a processor. The processor may be configured to receive indications of engine operating parameters and engine accelerator pedal position, determine whether the received indications correspond to antisurge mode activation conditions, and, in response to a determination that the received indications correspond to antisurge mode activation conditions, initiate control of selected engine components by directing the selected engine components to operate based on stored engine operating parameters recorded a predetermined time prior to the determination.

Abstract: A machine is disclosed. The machine may have an engine having a combustion chamber. The machine may also have a first sensor configured to generate a first signal indicative of a speed of the combustion engine. Additionally, the machine may have a second sensor configured to generate a second signal indicative of a desired supplied fuel quantity. The machine may also have a counter configured to generate a third signal indicative of a count. Additionally, the machine may have a fuel injection system having a controller. The controller may be configured to, based on the first, second, and third signals, select one of a plurality of shot modes and generate a corresponding fourth signal. The fuel injection system may also have a fuel injector configured to, based on the fourth signal, inject a quantity of fuel into the combustion chamber.

Abstract: Method for dosing fuel injected into an engine, with a fuel quantity for an injector, the fuel quantity being divided into pilot and main injections for respective activation duration having activation duration corrective value, the method may include storing correlation data between fuel injection quantity and activation time under at least a state parameter of the injector, wherein the fuel injection quantity includes reference total injection quantities determined for predetermined operating states of the engine, determining a present operating state of the engine, placing the engine into one of the predetermined operating states, determining a present total injection quantity and a reference total injection quantity in one of the at least a state parameter of the injector, and defining the respective activation duration corrective value for the pilot and main injection considering a difference between the reference total injection quantity and the present total injection quantity.

Abstract: An internal combustion engine to which the inventive device for controlling an internal combustion engine is applied includes an intake control valve provided in an air-intake path at a position upstream from an intake valve, the intake control valve being controlled to be either in an operative state operating in relation to the operation of the intake valve or in an non-operative state maintaining the air-intake path always open, and, in the operative state, closed at least prior to the opening of the intake valve and opened after the opening of the intake valve to generate the pressure difference between the upstream and downstream from the intake control valve.

Abstract: A method of operating a fuel injected multi-cylinder internal combustion engine includes establishing a flow shift compensation term by comparing a pre-flow shift value with a post-flow shift value. The pre-flow shift value is indicative of a pre-flow shift fueling signal duration linked with an engine test speed, and the post-flow shift value is indicative of a post-flow shift fueling signal duration linked with the engine test speed. The method further includes controlling an engine speed via outputting fueling signals from a digital engine speed governor to a plurality of fuel injectors of the internal combustion engine.

Abstract: A method of regulating a throttle opening of an engine in a hybrid electric vehicle system includes initiating a fuel-cut off operating mode of the engine, monitoring an engine speed during said fuel cut-off operating mode and regulating the throttle opening based on the engine speed during the fuel-cut off mode to maintain a manifold absolute pressure (MAP) of the engine above a threshold MAP.

Abstract: A control method and a control device of an engine are introduced. During the process of the engine controlling, the control unit does the adaptive learning for the actual target value of the feedback of different aims, and following the dynamic spectrogram generation strategy optimizing compares the adaptively learning parameter of the same working status and the same time with the basic spectrogram parameter. If the compared result doesn't meet the condition, then keep the basic spectrogram parameter. And if it meets the condition, then the engine generates the dynamic spectrogram parameter. Based on the dynamic spectrogram combination strategy, the engine combines the basic spectrogram parameter and the dynamic spectrogram parameter generated to the combined spectrogram parameter instead of the basic spectrogram parameter.

Abstract: A method of operating a fuel injected multi-cylinder internal combustion engine includes establishing a flow shift compensation term by comparing a pre-flow shift value with a post-flow shift value. The pre-flow shift value is indicative of a pre-flow shift fueling signal duration linked with an engine test speed, and the post-flow shift value is indicative of a post-flow shift fueling signal duration linked with the engine test speed. The method further includes controlling an engine speed via outputting fueling signals from a digital engine speed governor to a plurality of fuel injectors of the internal combustion engine.

Abstract: The driving force control unit for a vehicle comprises a plurality of control modes for controlling a driving force, each of control modes having each driving force characteristic, a vehicle driving condition detecting unit for detecting a vehicle driving condition, a selector for selecting one control mode from the control modes, a temporary selector for changing the current mode to other mode, and a driving force indication value setting unit for setting a driving force indication value according to the vehicle driving condition and the driving force characteristic corresponding to the selected mode by the selector or the temporary selector.

Abstract: An intake air amount control system for an internal combustion engine, which is capable of reducing energy for driving a variable intake lift mechanism, and properly controlling an intake air amount during an auto cruise operation. The intake air amount control system for the engine holds a lift of an intake valve at a predetermined lift by holding a target lift at the predetermined lift when it is determined that a vehicle is in the auto cruise operation. This reduces energy required for an intake lift actuator which drives the variable intake lift mechanism, and suppresses heat generated by a motor of the intake lift actuator. Further, during the auto cruise operation, by changing a throttle valve opening, the intake air amount is properly controlled.

Abstract: When a driving region of an engine is in a specified self-ignited combustion region, a valve timing is controlled in such a manner as to establish a negative valve overlap period in which an exhaust valve and an intake valve are closed. During the negative valve overlap period, a direct injection is performed to reform a fuel. After the direct injection, a port injection is performed to control an output. Thereby, a self-ignited combustion control is performed. During the self-ignited combustion control, a fuel reform degree of the fuel injected by the direct fuel injection is detected, and a self-ignited combustion condition in a present combustion cycle is estimated based on the fuel reform degree detected in the present combustion cycle. A fuel injection quantity of the intake port fuel injection is corrected according to the estimated self-ignited combustion condition in order to stabilize the self-ignited combustion condition.

Abstract: The driving force control unit comprises a plurality of control modes for controlling a driving force, each of control modes having each driving force characteristic; a vehicle driving condition detecting unit for detecting a vehicle driving condition; a selector for selecting one control mode from the plurality of control modes; a driving force setting unit for setting a driving force indication value according to the driving force characteristic selected by the selector based on the vehicle driving condition; and a shift lever position detector for detecting a shift lever position of a transmission. The control mode includes a reverse control mode having a reverse driving force characteristic suitable for traveling the vehicle in reverse direction. The driving force setting unit changes the control mode to the reverse control mode when the shift lever is detected in a position of a reverse range, and sets the driving force indication value according to the reverse driving force characteristic.

Abstract: At high temperature, namely, when the temperature of intake air is higher than a predetermined normal temperature range, an ECU (25) controls a variable valve timing mechanism (24) such that the timing for closing an exhaust valve (9) is adjusted to a retard side, thereby reducing the amount of high-temperature internal EGR gas to avoid the occurrence of pre-ignition. At intermediate load and high load, the ECU (25) makes the retard amount of the timing for closing the exhaust valve (9) larger than that at low load, thereby reducing the amount of internal EGR gas. At intermediate load and in an intermediate-revolution range or a high-revolution range, the rotating speed of an electric motor (16) is increased to raise a supercharging pressure exerted by a supercharger (17).

Abstract: The present invention provides a vehicular adaptive cruise control system and method that can adapt in real-time to tire and road conditions, vehicular weight, dynamics of the host vehicle, as well as other factors, to offer improved collision avoidance and warning.

Abstract: A method for detecting the angular position of a gas knob of a motorcycle; the method presents the steps of: detecting simultaneously four mutually redundant measurements of the angular position of the gas knob by means of two mutually independent angular-position sensors forming part of an acquisition system; making a cross comparison two by two between the four measurements for diagnosing any possible malfunctioning of the angular-position sensors; and determining the angular position of the gas knob, using at least one measurement supplied by an angular-position sensor operating properly.

Abstract: A throttle valve control system for an internal combustion engine which controls an opening of a throttle valve of the engine so that the opening coincides with a target opening. A regulation value of a change amount of the throttle valve opening is set according to at least a temperature parameter indicative of a temperature of the engine. The target opening is set within a range defined by the regulation value. An upper limit value and a lower limit value of the regulation value is set according to the temperature parameter, and a transition control is performed wherein the regulation value is set according to an elapsed time period after start of the engine so as to change from the lower limit value to the upper limit value.

Abstract: The present invention provides an intake air control capable of implementing a highly accurate constant negative pressure control with a smaller number of process steps under various environments. The intake air control is applicable to an engine having a variable valve actuation mechanism for adjusting at least a lift amount of an intake valve to control an intake air amount and a throttle valve for keeping a gauge pressure in an intake manifold at a desired gauge pressure. A reference throttle opening area is determined by referring to a first table based on a desired intake air amount. The first table defines a relation between an intake air amount and a throttle opening area under a reference gauge pressure, a reference atmospheric pressure and a reference intake air temperature.

Abstract: An engine speed control system for an agricultural vehicle includes a variable throttle controller, a mode selector, and a control device. The variable throttle control permits an operator to select a variably adjustable engine speed and the mode selector permits the operator to select between a plurality of pre-set engine speeds. The control device receives output signals from the throttle controller, generates engine speed commands, and delivers the commands to an engine controller for controlling the speed of the agricultural vehicle's engine. The control device is operable to generate a first engine speed command associated with one of the pre-set engine speeds when an operator activates the mode selector and to temporarily or permanently override the first engine speed command with a second engine speed command associated with the throttle controller when the operator activates the throttle controller.

Abstract: Rotation recognition means for recognizing a revolution of a crankshaft based on the cylinders before the combustion cycle of a cylinder in question is provided. When the supply of fuel by injection from an injector to a certain cylinder of the six cylinders has become impossible, then control is performed to change the number of cylinders targeted by the rotation recognition means so as to recognize the revolution of the crankshaft for all six cylinders whose combustion cycles are consecutive prior to the combustion cycle of the cylinder in question, and to stop the supply of fuel from the injectors for supplying fuel to cylinders whose combustion cycles are equally spaced from the cylinder to which the supply of fuel is not possible, so that the spacing between the combustion cycles in the cylinders whose combustion cycles come before and after and sandwich the cylinder to which the supply of fuel is not possible becomes uniform.

Abstract: If a driver of a vehicle has slowed-down the vehicle, a deceleration controller does not apply deceleration to the vehicle within a specified time after the driver has finished slowing-down of the vehicle. The deceleration controller is a device that automatically decelerates the vehicle if a distance between the vehicle and another vehicle running in front of the vehicle is less than a specific distance to avoid collision of the two vehicles.