Abstract: An intake system mounted to a vehicle controls an opening angle of a variable flap according to an RPM of an engine, an intake pressure, and an opening angle of a variable flap to optimize performance in various operation regions by detecting engine RPM and an intake air pressure, and determining an operation region based on the RPM of the engine; applying the intake pressure to determine a target amount of air and an opening angle of a variable flap for an operation region; driving an actuator to adjust an opening angle of the variable flap to a target opening angle; and analyzing an operation position of the actuator to detect an opening angle of the variable flap, and, when the target opening angle is not followed, correcting a drive of the actuator such that an opening angle of the variable flap follows the target opening angle.

Abstract: Systems and methods for improving fuel injection of an engine that includes a cylinder receiving fuel from two different fuel injectors is disclosed. In one example, a transfer function or gain of a direct fuel injector is adjusted in response to an exhaust lambda value and a fraction of fuel supplied to a cylinder during a cylinder cycle.

Abstract: A method for controlling an internal-combustion engine comprises steps of: determining a current value of a driving torque requested to the internal-combustion engine and a first time derivative of the current value of the driving torque; comparing the current value of the driving torque and first time derivative with first and second threshold values, respectively; determining a “sport driving” condition only if the current value of the driving torque is higher than the first threshold value and the first time derivative is higher than the second threshold value; and controlling the internal-combustion engine as a function of the “sport driving” condition.

Abstract: A method and apparatus for local loop closure is provided. The apparatus includes a component for use in a gas turbine engine. The component includes at least one of an actuator and a servo-valve, at least one sensor, and an electronic module comprising controller electronics and memory. The electronic module is configured to receive and process commands for the at least one of an actuator and a servo-valve and queue received commands in an input buffer.

Abstract: A method and a system for improving operation of a hybrid vehicle are presented. In one example, operation of a hybrid driveline is adjusted in response to driving conditions that may cause wheel slip or a stuck vehicle. The approach may reduce driveline wear and improve vehicle drivability.

Abstract: A multiple throttle device of the invention employs a constitution in which, as a sensor section that detects the opening of throttle valves, a shaft member formed to have a different axis from a throttle shaft is positioned within the width L of a throttle body, and a throttle position sensor is disposed in the shaft member.

Abstract: A system and a method of controlling a motor for reducing vibration of an electric vehicle are provided that maximize an output torque of the motor by applying a vibration reduction torque gain based on a position value of the accelerator pedal. The system includes a driving motor as a power source and an accelerator pedal position sensor configured to detect a position value of an accelerator pedal. In addition, a controller is configured to calculate a virtual position value of the accelerator pedal limited to an increasing slope or a descending slope based on the position value of the accelerator pedal, and output a final torque of the driving motor by applying a vibration reduction torque gain based on the virtual position value of the accelerator pedal.

Abstract: A vehicle pedal assembly comprising a pedal including a pedal stub arm having a metal pedal arm molded into a plastic stem with inserts molded therein and an actuator bar coupled to the stem of the pedal. Fasteners extend through the actuator bar and into the inserts in the stem for securing the actuator bar to the pedal. The actuator bar is adapted to exert an active force against the pedal. In one embodiment, both the pedal arm and the actuator bar include one or more bends defined therein. The pedal arm has a length and shape dependent upon the distance and position of the floor or pedal pad relative to the pedal. The actuator bar has a length and shape dependent upon the distance and position of the pedal relative to an actuator arm.

Abstract: Example embodiments may relate to a series elastic actuator (SEA). The SEA may include a motor, a transmission assembly, and an output plate that collectively form a motor housing assembly. The motor housing assembly may be supported on bearings that allow for a rotation of the motor housing assembly. The bearings may be supported on a housing of the SEA that may be connected to a robot link. Springs may be connected between the housing and the transmission assembly. The springs may be connected such that friction is reduced between the balls and races of the bearings. A sensor may be configured to measure a rotary deflection of the transmission assembly. A string may be wrapped around a rotary shaft of the sensor and ends of the string may be attached to the transmission assembly such that a rotation of the transmission assembly causes a rotation of the rotary shaft.

Abstract: An ECU is mounted on a vehicle including an engine and a motor that can generate cranking torque applied to a rotation shaft of the engine. Where a request for starting the engine is not issued, the ECU determines whether the engine is during coasting or not. The ECU changes cranking target torque in accordance with engine rotation speed. In this way, engine rotation speed during cranking can be reduced to and remain in the optimum region where misfire and resonance can be avoided.

Abstract: An accelerator device includes a first cover that provides an internal space for housing a return spring and a failure region where the first cover engages a second cover. The failure region has a thickness configured to be thinner than a thickness of a body of the first cover. When a pedal rotates to open an accelerator, a second cover side friction member creates a force that pushes the second cover toward an outside of the device. The force is relayed to a contact portion of the first cover via a contact portion of the second cover and causes a failure of the failure region. As a result, the return spring is prevented from falling out of the internal space when the body breaks.

Abstract: An accelerator operating device for electrically controlling the output of a power unit on the basis of the manipulated variable of a controller, by achieving the generation of a frictional resistance using a simple configuration. An accelerator operating device includes an extended portion turned upon the operation of a throttle grip; a torsion coil spring biasing the extended portion in a returning direction while the extended portion is turned; and a friction generating mechanism adding a frictional resistance to the turning movement. The friction generating mechanism includes a compression coil spring applying a pressing force to the extended portion, and a friction member brought into sliding contact with the extended portion by being pressed by the compression coil spring. The torsion coil spring and the compression coil spring are placed coaxially with the extended portion and overlap each other at least partially along the axial direction of the extended portion.

Abstract: A brake negative pressure generating device of a vehicle includes: an electrically-driven supercharger for drawing in, compressing, and supplying outside air; a vacuum chamber connected to an inlet opening of the electrically-driven supercharger and supplying negative pressure for brake force boosting; a negative pressure supply passage for connecting the inlet opening of the electrically-driven supercharger and the vacuum chamber; and a first negative pressure control valve for opening and closing an inlet passage. Accordingly, the electrically-driven supercharger is run to supplement brake negative force if the brake negative force is not sufficient.

Abstract: A vehicular vibration damping control device that performs vibration damping of pitch/bounce vibrations of a vehicle through drive output control includes a vibration damping control portion that controls a driving torque of an engine to perform pitch/bounce vibration damping, and a compensation component adjustment portion that reduces the magnitude of a compensation component for compensating for a wheel torque calculated by the vibration damping control portion on the basis of an amount of change in the throttle opening degree of the engine. The compensation component is reduced when the temperature of a conductor for supplying a current to a throttle motor for adjusting a throttle opening degree estimated on the basis of the amount of change in throttle opening degree becomes higher than a predetermined value.

Abstract: A method and system for operating vehicle accessories is described. The method and system allocate an available amount of engine torque between different accessories depending on boundary conditions and nominal vehicle operating conditions. In one example, the accessories may include an air conditioner compressor, an alternator, and various vehicle electrical loads that are in electrical communication with the alternator.

Abstract: A vehicle braking system includes (a) a rotary machine that functions at least as an electricity generator and that is capable of generating braking torque based on regenerative torque, (b) a first braking control apparatus that electrically controls the braking torque of a mechanical brake that is provided for a wheel, and (c) a second braking control apparatus that replaces one of the braking torque provided by the rotary machine and the braking torque provided by the mechanical brake with another one of the braking torque provided by the rotary machine and the braking torque provided by the mechanical brake while maintaining a target braking torque, the second braking control apparatus correcting the braking torque provided by the rotary machine so that the deviation lessens, if the braking torque of a vehicle has deviation from the target braking torque at time of replacement transition.

Abstract: The present invention is a proposal relating to cooperative manipulation of an actuator which actively changes a supercharging pressure and a throttle in the case of application of torque demand control to an internal combustion engine with a supercharger. A control device provided by the present invention separately determines a target air quantity for manipulation of the throttle, and a target air quantity for manipulation of the actuator. In more detail, driver required torque which is included in required torque is converted into an air quantity in accordance with a predetermined conversion rule, and the air quantity which is obtained by the conversion is determined by calculation as a reference target air quantity. The reference target air quantity is used as a target air quantity for throttle manipulation, and is also used as a target air quantity for actuator manipulation at a normal time.

Abstract: A terminal-supporting apparatus includes a resin part made of non-conductive resin material and a plurality of conductive terminals including parallel terminal portions which are directly supported by the resin part. The parallel terminal portions are electrically connected to each other through an electric element. The resin part supporting the parallel terminal portions is made of non-conductive resin material mixed with non-conductive reinforced fibers of which thermal expansion coefficient is smaller than that of the non-conductive resin material. An extending direction of the parallel terminal portion is referred to as a longitudinal direction and a direction perpendicular to the longitudinal direction is referred to as a perpendicular direction. The non-conductive reinforced fibers have a fiber direction which is substantially the same as the perpendicular direction.

Abstract: A system for detecting accelerator pedal failure in an accelerator pedal system including a vehicle control system, the pedal failure detecting system having an accelerator pedal; a pedal arm; a sensor configured to interpret a force applied to the accelerator pedal and further configured to transmit a signal as a sensor output to the vehicle control system, wherein the vehicle control system is configured to correlate the sensor output to an accelerator pedal position, and to indicate a failure condition when it is not feasible the to read the sensor output given the accelerator pedal position. A method for detecting accelerator pedal failure conditions in an accelerator pedal system.

Abstract: A method and a system for correcting an engine torque based on a vehicle load may include: determining whether a vehicle load determination condition is satisfied continuously for a predetermined maintaining time, determining an average engine torque for the predetermined maintaining time if the vehicle load determination condition is satisfied continuously, determining whether the average engine torque is larger than a predetermined engine torque, determining a ratio of the average engine torque and the predetermined engine torque if the average engine torque is larger than the predetermined engine torque, determining a correction factor using the ratio of the average engine torque and the predetermined engine torque, and determining the engine torque using the correction factor and a predetermined normal torque filter.

Abstract: A control system for controlling a power output of a gas engine of the present invention includes a target value setting section for setting as a target value a restricted power output which is less than a predetermined power output when a source gas pressure of a gas fuel is less than a predetermined value required to inject the gas fuel against an intake-air pressure according to the predetermined power output, a power output setting section for setting a set value of a power output based on the target value set by the target value setting section, and a power output control section for controlling the power output so that the power output reaches the set value set by the power output setting section.

Abstract: An internal combustion engine can be operated in response to a received first throttle control input in a first operating regime that includes delivering a first air-fuel mixture having a first air/fuel ratio to a combustion volume to deliver a first output power in a first output power range between zero and a transition output power level. The engine can be operated in response to a received second throttle control input in a second operating regime that includes delivering a second air/fuel ratio richer than the first air/fuel ratio to the combustion volume to deliver a second output power in a second output power range between the transition output power level and a maximum output power level.

Abstract: When an accelerator operation amount is 0, a throttle actuator is controlled by means of isochronous control by using a second throttle operation amount (?tps2) for the isochronous control, and, on the other hand, when the accelerator operation amount is not 0, the throttle actuator is controlled by means of droop control by using a first throttle operation amount (?tps1) for the droop control. When an engine rotation speed is equal to or lower than a LOW rotation speed, larger one of the first and second throttle operation amounts (?tps1 and ?tps2) is used, and when the engine rotation speed is equal to or higher than a HIGH rotation speed, smaller one of the first and second throttle operation amounts (?tps1 and ?tps2) is used, to thereby control the throttle actuator by means of the isochronous control.

Abstract: Various systems and methods for an engine system which includes a throttle turbine generator having a turbine which drives an auxiliary generator and disposed in a throttle bypass are described. In some examples, a throttle bypass valve is controlled to adjust airflow through the throttle bypass responsive to airflow to cylinders of the engine. In other examples, an operating parameter such as throttle position is controlled based on transient operating conditions of the engine. In still other examples, charging of a battery is coordinated between the auxiliary generator and a primary generator.

Abstract: One embodiment of an independent engine throttle override comprised of an override switch in conjunction with of an override module which houses a fixed resistor and switching relay to provide the capability to return a runaway automotive engine to idle speed without impacting operability of other vehicle control systems.

Abstract: A machine throttle system according to an embodiment of the present disclosure includes a power system configured to operate at different speeds. The power system is coupled to a first throttle device and a second throttle device. A control module is communicatively coupled to the power system, the first throttle device, and the second throttle device. The control module is configured to cause the power system to operate at a first speed in response to the first throttle device being set to a level. The control module is also configured to cause the power system to increase in speed in response to the second throttle device when the first throttle device level is set below a predetermined value. The control module is further configured to cause the power system to decrease in speed in response to the second throttle device when the first throttle device level is set at or above the predetermined value.

Abstract: In order to address turbo lag at altitude, a vehicle boosts output torque of an internal combustion engine with electric motor torque generated from a battery. The residual charge of the battery is increased at altitude to provide a sufficient reserve for the corresponding increase in turbo lag. The invention is typically applied to a parallel hybrid vehicle.

Abstract: A position detecting device affixed to a handle bar, wherein the positional displacement between a section to be detected and a detecting section is minimized to reduce the degradation of the detection accuracy. A position detecting device 1 comprising: a section 4 to be detected which is rotated on the basis of the rotational operation of a handle grip 3 provided to a handle bar 2; a detecting section 5 which detects the section 4 to be detected; and a case 6 which contains the section 4 to be detected and the detecting section 5, wherein the position detecting device 1 is also provided with a support member 7 which rotatably supports the section 4 to be detected and to which the detecting section 5 is affixed.

Abstract: A method for controlling fuel flow to apportion a plurality of available fuels in a multi fuel engine is disclosed. An input power for operating the multi fuel engine at a desired engine speed is determined at a PI controller, and a fuel flow rate for each of a plurality of available fuels is determined at a fuel apportionment module based on the required input power and a specified fuel substitution ratio for apportioning the plurality of fuels to the multi fuel engine. Fuel flow commands for each of the plurality of fuels are output to corresponding actuators of fluid flow control devices for the fuels to cause the cause the fluid flow control devices to provide the corresponding fuels to the multi fuel engine at the corresponding fuel flow rate.

Abstract: Improved throttle body assemblies are described. More particularly, throttle body assemblies having improved throttle position sensor assemblies are described. In one aspect, a throttle body assembly for providing controlled aspiration to an engine is described. The assembly comprises a throttle body housing defining a throttle bore for receiving a throttle plate. The throttle plate is actuatable by an electric motor. The assembly further comprises a throttle position sensor configured to monitor positions of the throttle plate. The throttle assembly further comprises an electric discharge path formed between the throttle position sensor and the throttle body housing, wherein the electric discharge path substantially prevents the accumulation of residual electric charge across the throttle position sensor.

Abstract: Provided is a position detector device capable of suppressing the effect of external magnetic fields on precision in detection. A position detector device (1) comprises: a subject to be detected (4a), which rotates along with the rotation of a handle grip (3) that is disposed on a handlebar (2); a detector unit (5) that detects the subject to be detected (4a); and a case (7) which houses the subject to be detected (4a) and the detector (5). The subject to be detected (4a) is treated as a magnetic cylindrical body, the detector unit (5) is treated as a magnetic detector unit (5) that detects changes in magnetism. A support member (6) rotatably supports the subject to be detected (4a), and further comprises a housing member (65) that houses the detector unit (5) on the interior circumference side of the subject to be detected (4a).

Abstract: An actuating device for providing a physical output quantity includes: a control element for providing the physical output quantity; an actuator unit triggering the control element according to a triggering variable; and a communication unit receiving the triggering variable, which communication unit sends actuator information which contains an indication about a correlation between the provided physical output quantity of the actuating device and the triggering variable.

Abstract: An internal combustion engine can be operated in response to a received first throttle control input in a first operating regime that includes delivering a first air-fuel mixture having a first air/fuel ratio to a combustion volume to deliver a first output power in a first output power range between zero and a transition output power level. The engine can be operated in response to a received second throttle control input in a second operating regime that includes delivering a second air/fuel ratio richer than the first air/fuel ratio to the combustion volume to deliver a second output power in a second output power range between the transition output power level and a maximum output power level. Related methods, systems, and article of manufacture are described.

Abstract: An object of the present invention is to improve the accuracy of predicting an in-cylinder intake air amount in a control device that predicts an in-cylinder intake air amount of a supercharged engine and controls the supercharged engine based on the predicted value, and particularly the accuracy during transient operation. To achieve this object, the present control device calculates a predicted value of a supercharging pressure based on a predicted value of a degree of throttle opening using a physical model of the supercharged engine, and also calculates a correction amount thereof. When calculating the correction amount, a measurement value of the supercharging pressure measured by a supercharging pressure sensor is acquired, and an estimated value of the supercharging pressure is calculated based on a measurement value of a degree of throttle opening using a physical model of the supercharged engine.

Abstract: An engine includes: a carburetor configured to supply an air-fuel mixture of fuel and air; a crank case defining a crank chamber; a cylinder block which includes: a cylinder bore in which a reciprocable piston is disposed; and an intake port which supplies the air-fuel mixture supplied from the carburetor to the crank chamber; a control valve configured to open and close the intake port; and a controller configured to control the control valve. The controller controls the number of times that the control valve closes the intake port with respect to the number of times that the piston moves up to thereby reduce pressure of the crank chamber.

Abstract: Engine synchronization apparatus and system for multi-engine vehicles such as boats and aircraft providing limited authority throttle cable trim effected by an apparatus interposed between the throttle plate and throttle cable of a slave engine and mounted in a floating configuration. An actuator is mounted to the apparatus to trim the distance between the throttle plate and throttle cable attachment thereby trimming the throttle cable. A system is provided in which a difference signal derived from master and slave engine tachometer signals is used to control the actuator and synchronize the engines within a predetermined range.

Abstract: Methods and systems are provided for conditioning a throttle command so that, on average, a difference between an actual airflow rate and a commanded airflow rate is substantially zero. A commanded throttle position is modified with a correction factor to also reduce a throttle angle error. By reducing engine air disturbances, engine performance is improved.

Abstract: A throttle body is provided with an internal fuel reservoir for relieving pressure waves and for assisting hot start conditions of an associated small internal combustion engine employing a low pressure fuel injection system.

Abstract: A fuel injection control system provided with a throttle by wire (TBW) system detecting an operation condition of a throttle grip and controlling, via an actuator, a throttle valve. The control system detects the throttle valve opening and controls an injector. An increased quantity correction value is determined based upon of an output of a throttle valve opening sensor and an operation condition of the throttle grip. When an acceleration condition of a vehicle is detected according to the output of the throttle valve opening sensor, an increased quantity correction of fuel is performed. The increased quantity correction value is brought to an attenuation condition in which the increased quantity correction value is gradually decreased, or a stop condition in which the increased quantity correction value is made to zero, when the throttle grip is not in drive in an opening direction, even though an acceleration condition is detected.

Abstract: The present disclosure is a method and apparatus for reducing engine emissions utilizing multiple types of fuels. Apparatus for reducing engine emissions may include a controller which may control delivery of a first fuel to be combined with a second fuel at a combustion chamber of an engine. Controller may be configured to provide a proper amount of the first fuel at the correct point in an engine cycle based upon a current engine performance data.

Abstract: A cylinder intake air amount calculating apparatus for an internal combustion engine that calculates a cylinder intake air amount, which is an amount of fresh air sucked in a cylinder of the engine using an intake air pipe model equation which is obtained by modeling an intake pipe of the engine, is provided. An intake air flow rate is obtained. The cylinder intake air amount is calculated by applying the intake air flow rate and a preceding value of the cylinder intake air amount to the intake pipe model equation. A predicted intake air flow rate which is a predicted value of the intake air flow rate is calculated. A predicted cylinder intake air amount which is a predicted value of the cylinder intake air amount is calculated by applying the predicted intake air flow rate and the cylinder intake air amount to the intake pipe model equation.

Abstract: In a situation where a conventional inductive throttle sensor is used with a motor-driven throttle valve device to detect the rotation angle of a throttle shaft, plural sensor connection conductor sections for connecting a connector terminal to a circuit board terminal section are formed on the cover on one lateral surface side of a circuit board in the long-axis direction. This increases the dimension of the cover in the short-axis direction (the dimension in the direction of air flow in an intake path). Consequently, it is difficult to install the motor-driven throttle valve device and inductive throttle sensor in a narrow engine room. This problem is addressed by using a separate member to achieve electrical conduction between a stator circuit board and a conductor routed inside the cover installed over the stator circuit board in a concentrated manner on one side of the circuit board.

Abstract: A throttle valve device including a throttle valve control logic may include an electronic controller that determines whether a driving state of a vehicle is an idle-driving state from electronic signals supplied from sensors, a desired air amount map unit that is electrically connected with the electronic controller and where a desired amount of air according to RPM of an engine and an amount of injected fuel for idle-driving are set; and a governor for controlling an EGR valve and a governor for controlling a throttle valve that are electrically connected with the electronic controller and the desired air amount map unit and control the driving of the EGR valve and the throttle valve, respectively, such that the desired amount of air output in accordance with the RPM of the engine of the vehicle and an amount of the injected fuel is supplied to the engine in the idle-driving.

Abstract: A control device for an internal combustion engine provided by the present invention is a control device which can satisfy both a requirement relating to exhaust gas performance of the internal combustion engine and a requirement relating to operation performance by properly regulating a change speed of a required air-fuel ratio, in the internal combustion engine which uses torque and an air-fuel ratio as control variables. The control device receives the requirement relating to the exhaust gas performance of the internal combustion engine, and calculates an air-fuel ratio which satisfies the requirement as a required air-fuel ratio. When a predetermined reduction condition is not satisfied, an original required air-fuel ratio is directly determined as a final required air-fuel ratio.

Abstract: An intake device for an internal combustion engine includes a casing, a valve, a shaft, and an actuator. The casing defines an intake passage, and the valve is contained in the casing. The shaft supports the valve, and the actuator includes a motor, a speed reduction mechanism, and a transmission mechanism which transmits torque of the motor to the shaft from a gear of the speed reduction mechanism. The transmission mechanism includes first and second connection members which are connected to the gear and the shaft respectively, and an impact absorbing member held between the first and second connection members. The first and second connection members respectively include first and second protrusions, which are alternately arranged in a rotational direction of the transmission mechanism. The impact absorbing member includes compressive deformation parts which are deformable in the rotational direction and are respectively located between adjacent first and second protrusions.

Abstract: An object of the present invention is to prevent hunting of a throttle in a region in which a throttle upstream pressure and a throttle downstream pressure become substantially equal to each other in an internal combustion engine with a supercharger. For this purpose, a control device for an internal combustion engine with a supercharger provided by the present invention processes a signal of a throttle opening which is calculated by using a formula of throttling when a ratio of the throttle upstream pressure and the throttle downstream pressure has a value close to 1, and controls an operation of the throttle with the throttle opening the change speed of which is lessened as a target throttle opening.

Abstract: A method of controlling an engine of a vehicle having a particulate filter and operable in an air restriction mode wherein air inflow to an air intake throttle is restricted includes determining if the engine is operating in the air restriction mode, sensing a position of an accelerator pedal, and sensing a speed of the vehicle. The method further includes removing the restriction to the air intake throttle when the engine is operating in the air restriction mode, one of a change in position of the accelerator pedal over a period of time is greater than a pre-defined pedal acceleration rate or the position of the accelerator pedal is equal to a pre-defined pedal limit, and the speed of the vehicle is less than a pre-defined speed limit.

Abstract: An apparatus estimates a quantity of recirculated exhaust gas. The apparatus includes a first unit computing a total quantity of gas, a second unit computing a quantity of exhaust gas passing through an EGR vale by means of an EGR valve model, a third unit computing a temporal quantity of the exhaust gas by means of an EGR diffusion model which simulates a behavior of the exhaust gas, a fourth unit obtaining an intake air quantity by subtracting the temporal exhaust gas quantity from the total gas quantity, a fifth unit correcting the computed intake air quantity by means of intake air quantity measured by the airflow meter, a sixth unit computing an intake air pressure based on the corrected quantity of the intake air, and a seventh unit computing a quantity of the recirculated exhaust gas based on at least the intake air pressure.

Abstract: A full close position limiting member is adapted to be engaged with a valve gear when a valve is driven in a valve closing direction and reaches a full close position of the valve. An intermediate position limiting member is adapted to be engaged with a return spring when the valve is placed on a side of a predetermined intermediate position where a full close position of the valve is located. The intermediate position limiting member receives an intermediate reaction force from the return spring through engagement with the return spring, and the full close position limiting member receives a full close side engaging force from the valve gear. The full close side engaging force and the intermediate reaction force are generally directed in a predetermined direction.

Abstract: A control system of an internal combustion engine provided with a first fuel injection valve that injects fuel into a cylinder of the internal combustion engine, a second fuel injection valve that injects fuel into an intake port of the internal combustion engine, an EGR passage that introduces an EGR gas from an exhaust passage of the internal combustion engine to an intake passage thereof, an EGR valve that is arranged in the EGR passage, and an obtaining unit that obtains an amount of intake air in the internal combustion engine. When the EGR valve is open, a determination is made as to whether the amount of intake air is in an increasing tendency or in a decreasing tendency with respect to a change in the cylinder injection ratio, and a value of the amount of intake air thus obtained is corrected based on the determination.