Abstract: Provided is an opening/closing mechanism for an intake member which enables backlash suppression a working member and positioning of a choke lever. The opening/closing mechanism includes the intake member that accommodates a filter part and has an opening leading to a carburetor at an end wall portion facing the filter part; an opening/closing member that is disposed between the filter part and the end wall portion, and opens and closes the opening; and a working member that is disposed on a side opposite to the opening/closing member with the end wall portion interposed therebetween.

Abstract: A multi-cylinder engine having an engine body with a cylinder head is provided. The engine includes first and second cylinder groups, each having a plurality of independent exhaust passage parts provided to the cylinder head and connected to cylinders of the first and second cylinder groups, respectively, and first and second collective exhaust passage parts collecting the first and second pluralities of independent exhaust passage parts at a location downstream in an exhaust gas flow direction, and having an opening formed in the side surface part of the cylinder head, first and second exhaust-pipe parts each connected to the openings of the first and second collective exhaust passage parts, respectively, an exhaust gas recirculation (EGR) passage connected at one end to the first exhaust passage group and connected at the other end to an intake passage, and an exhaust gas temperature sensor provided to the first exhaust-pipe part.

Abstract: An amplifier circuit (AC) for amplifying an output signal (OS) of a capacitive sensor (M) comprises a first input terminal (AIN) to receive the output signal (OS) of the capacitive sensor (M) and a second input terminal (BIN) to receive a bias voltage (Vbias) of the capacitive sensor (M). The amplifier circuit (AC) comprises an amplifier (A) for amplifying the output signal (OS) and a control circuit (CF) arranged in a feedback loop (FL) of the amplifier (A) being configured to control a DC voltage level at an input connection (A1) of the amplifier (A). A bias voltage sensing circuit (BVS) senses a change of the level of the bias voltage (Vbias) at the second input terminal (BIN) and changes the bandwidth of the feedback loop (FL) in dependence on the sensed change of the level of the bias voltage (Vbias).

Abstract: Presented are model-based control systems for operating parallel hybrid powertrains, methods for making/using such systems, and motor vehicles with parallel hybrid powertrains and model-based torque and speed control capabilities. A method for controlling operation of a hybrid powertrain includes receiving a command signal for a hybrid powertrain operation associated with a driver input and a current operating mode of the powertrain. A desired output torque for executing the powertrain operation is then determined. The method determines if a speed differential between an engine speed of an engine and a torque converter output speed of a torque converter is less than a calibrated threshold; if so, the method responsively engages a clutch device to operatively connect the engine's output member to the transmission's input member. Engine torque is then coordinated with motor torque such that the sum of the engine and motor torques is approximately equal to the desired output torque.

Abstract: A method for controlling a position of an electronic throttle valve of an internal combustion engine is provided. The method includes determining a desired throttle valve position; determining a first feed forward signal based on a rate of change between a previous throttle valve position and the desired throttle valve position; and determining a second feed forward signal based on a comparison of the desired throttle valve position to a limp home position of the throttle valve, in which the throttle valve is biased open by a spring. A summation of the first and second feed forward signals is used to actuate the throttle valve. After the throttle valve has been actuated according to the first and second feed forward signals, the position of the throttle valve is controlled with a feedback controller to obtain the desired throttle valve position.

Abstract: An engine state detection device adapted to a vehicle engine is electrically connected to a battery module providing a power signal is disclosed. The device includes a windowed comparison circuit and a controller. The windowed comparison circuit is configured to receive the power signal and convert the power signal to one of a plurality of sets of subject signals according to one of a plurality of level profiles. Each of the plurality of level profiles is related to a respective one of the plurality sets of subject signals. The controller is configured to perform an algorithm on the set of subject signal converted from the power signal for generating a combination signal, and determine a state of the vehicle engine according to the set of subject signal converted and the combination signal. The level profile on which the windowed comparison circuit depends is determined by the controller.

Abstract: A control apparatus for operating a fuel injector is provided. The control apparatus includes an electronic control unit configured to: identify when the engine is running under a fuel cut-off condition, and then perform a learning procedure to determine an actual value of energizing time that causes the fuel injector to inject a target fuel quantity. The learning procedure provides for the electronic control unit to perform several test injections with different energizing time values and measure an engine torque value caused by the test injection. The measured engine torque values and their correspondent energizing time values are used to extrapolate the actual value of the energizing time as the value that corresponds to a reference value of engine torque that is consistent with the target fuel quantity.

Abstract: A method for setting an engine speed of an internal combustion engine in a marine propulsion device of a marine propulsion system to an engine speed setpoint includes determining the engine speed setpoint based on an operator demand and predicting a position of a throttle valve that is needed to achieve the engine speed setpoint. The method also includes determining a feed forward signal that will move the throttle valve to the predicted position, and after moving the throttle valve to the predicted position, adjusting the engine speed with a feedback controller so as to obtain the engine speed setpoint. An operating state of the marine propulsion system is also determined. Depending on the operating state, the method may include determining limits on an authority of the feedback controller to adjust the engine speed and/or determining whether the operator demand should be modified prior to determining the engine speed setpoint.

Abstract: Various methods and systems for an engine driving an electrical power generation system are provided. In one embodiment, an example method for an engine driving an electrical power generation system includes adjusting an engine speed in response to a relationship between oxygen and fuel while maintaining a power transmitted to the electrical power generation system.

Abstract: A method of controlling an oil pump of an engine with a variable valve lift apparatus includes: detecting the operation status of a vehicle; determining whether mode change conditions of a variable valve lift apparatus are satisfied; determining whether the mode change condition of the variable valve lift apparatus is a condition for changing from a low lift to a high lift; comparing whether the current oil hydraulic pressure is larger than the current necessary hydraulic pressure, when the mode change condition of the variable valve lift apparatus is a condition for changing from a low lift to a high lift; and increasing oil pressure by controlling the oil pump, when the current oil hydraulic pressure is not larger than the current necessary hydraulic pressure.

Abstract: An accelerator pedal is urged in an accelerator closing direction by a hysteresis spring and a return spring. A first increase rate is obtained by dividing an urging force of the hysteresis spring exerted in an accelerator-full-opening position of the accelerator pedal by the urging force of the hysteresis spring exerted in an accelerator-full-closing position of the accelerator pedal. A second increase rate is obtained by dividing an urging force of the return spring exerted in the accelerator-full-opening position of the accelerator pedal by the urging force of the return spring exerted in the accelerator-full-closing position of the accelerator pedal. The second increase rate is smaller than the first increase rate.

Abstract: A snowmobile includes an engine, an engine power controller, an operation portion, an operation input detector, an operation amount detector, and a control portion. The control portion does not control the engine power controller based on an amount detected by the operation amount detector in a preliminary zone in which the operation amount detected by the operation amount detector is not more than a first operation amount. The control portion controls the engine power controller based on an operation amount detected by the operation amount detector if the operation amount is greater than the first operation amount. A second operation amount smaller than the first operation amount is set in the preliminary zone and the control portion determines whether operation of the operation portion is carried out based on whether operation corresponding to the second operation amount is detected by the operation input detector.

Abstract: Methods and systems are provided for using a crankcase vent tube pressure or flow sensor for diagnosing a location and nature of crankcase system integrity breach. The same sensor can also be used for diagnosing air filter plugging and PCV valve degradation. Use of an existing sensor to diagnose multiple engine components provides cost reduction and sensor compaction benefits.

Abstract: An object of this invention is to accurately detect a sensitivity abnormality of an in-cylinder pressure sensor over a wide operating range without using other sensor outputs or the like. Based on only the output of an in-cylinder pressure sensor 44, an ECU 50 acquires a first parameter that is affected by an output sensitivity of the sensor, and a second parameter that is not affected by the output sensitivity. Specifically, the ECU 50 acquires a heat release quantity PV? as the first parameter, and acquires an indicated torque ratio (A2/A1) as a second parameter. The ECU 50 also calculates a determination coefficient ? that is a ratio between the first and second parameters, and determines that the output sensitivity of the in-cylinder pressure sensor 44 is abnormal when the determination coefficient ? deviates from an allowable range.

Abstract: The invention relates to a control method for a steering system with electric power assistance, comprising a steering wheel, an electric power assist motor, an electric control unit, which includes a memory for storing digital data, a motor driver unit which based on a target engine torque that is delivered to the motor driver unit, determines and sends out electrical signals for controlling the electric power assist motor, at least one sensor device for determining a control variable introduced into the steering wheel, for example a manual torque, wherein in the control unit with the help of the control variable a preset value is determined for a engine torque of the power assist motor, characterized in that in the memory an upper threshold value for the target engine torque is stored and for a case A, in which the preset value exceeds the upper threshold value, the control unit sends out the upper threshold value as the target engine torque to the motor driver unit and in a case B, in which the preset value

Abstract: A method for controlling an internal combustion engine, comprising a number of cylinders and wherein the air mass trapped inside each cylinder is adjusted by means of a respective intake valve; the control method includes determining the total target torque; determining a target number of active cylinders; determining a target supercharge pressure such to guarantee the total target torque and controlling the intake valves of the target number of active cylinders (3) according to the target supercharge pressure such as to guarantee the total target torque.

Abstract: A method for controlling an internal combustion engine (1) comprising a number (W) of cylinders (3); the control method comprises determining the total target torque (Ci—obj) required to be delivered for the operation of the internal combustion engine (1); determining a number (Wa) of active cylinders (3) to be controlled in use for injection and combustion; while a number (Ws) of cylinders (3) are not active and are not controlled for injection and combustion, but only for aspirating an air mass; determining the required target torque (Ci—obj) to be delivered for the operation of the internal combustion engine (1) for each of the active cylinders (3); and controlling the internal combustion engine (1) as a function of the required target torque (Ci—obj) to be delivered for the operation of the internal combustion engine (1) for each of the active cylinders (3).

Abstract: A method for operating an internal combustion engine, which includes one or more cylinders, of which individual cylinders can be deactivated and, in an optimized manner with regard to time, reactivated again in order to influence a torque output by the internal combustion engine. To further optimize, with regard to time, the provision of torque during the operation of an internal combustion engine, a time delay and/or a delay in degrees crank angle or revolutions of the internal combustion engine between a triggering and the reactivation of a deactivated cylinder is taken into consideration for the reactivation of the deactivated cylinder.

Abstract: An engine system and method for operating an engine including a central throttle and a port throttle is disclosed. In one example, the central throttle and port throttle are adjusted to improve transitions between throttle control modes. The approach may be particularly beneficial for turbocharged engines.

Abstract: A display system for an automotive vehicle indicates the position of a throttle valve.

Abstract: The invention relates to a method for operating an internal combustion engine that has at least two cylinders (1), in particular a gas engine. According to said method, the amount of fuel supplied to each of the at least two cylinders (1) is controlled or regulated for the individual cylinders with the aid of a fuel metering device and a cylinder pressure sensor (2) in accordance with a desired performance and/or a desired torque and/or a desired speed of the internal combustion engine.

Abstract: The invention relates to a method and device, with the aid of which the monitoring of the oil supply to an internal combustion engine, which operates according to a two-stroke cycle, can be optimized.

Abstract: A method is disclosed for operating a spark ignition engine, comprising: discharging exhaust gases via an exhaust system comprising exhaust pipes from the at least two cylinders coming together to form an exhaust manifold; and initiating autoignition with exhaust gas from a first, exhaust-gas-supplying cylinder, which is discharged from the first cylinder into the exhaust system, the exhaust gas is introduced into an adjacent, exhaust-gas-receiving cylinder via the exhaust system. Exhaust gas from the first cylinder mixes with the air-fuel mixture of an adjacent cylinder raising the temperature therein. Under high loads the higher temperature and density of the aircharge is suitable to undergo autoignition.

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 method of torque-based control for an internal combustion engine may include determining a desired airflow rate into an intake manifold of the internal combustion engine during an engine start condition, determining a torque limit for a torque-based engine control module based on the desired airflow rate, and regulating engine torque based on the determined torque limit.

Abstract: An engine system for a vehicle and its method of operation are provided. In one embodiment, a control system is configured to indicate a clogging of a fuel filter based on a period of time that a fuel pressure switch remains in a low pressure state. In some embodiments, the control system may respond to an indicated clogging of the fuel system by limiting one or more of fuel pressure, fuel flow rate, and vehicle speed. By limiting the flow rate and/or the pressure at which fuel is delivered to the engine during conditions when the low pressure fuel sub-system is unable to provide sufficient fuel pressure and/or flow, degradation and/or damage to the fuel system, including the high pressure pump, may be reduced or eliminated.

Abstract: A flow controlling method for an auxiliary intake flow passage for use in a power unit which includes a starter clutch which is automatically engaged and disengaged in response to the engine speed. An intake air control valve (IACV) carries out changeover from water temperature dependent control (open loop control of adjusting the flow rate of the auxiliary intake flow passage in response to the warming up state of an engine) to target engine speed feedback control when the actual engine speed NE [rpm] drops to a clutch disengagement engine speed NEout (engine speed at which the centrifugal clutch is disengaged) (S3: Yes) and the opening ?1 [degree] of the throttle valve becomes smaller than a predetermined threshold value (throttle valve opening threshold value TH—?1 (S4: Yes).

Abstract: An electronic control unit initializes, when it is determined that a switching request has been input for switching to the droop control or to the isochronous control, a value of an integral term used in PID control that is performed in the isochronous control. A target fuel injection amount set prior to switching is used for initialization. Then, the ECU calculates, using a predetermined arithmetic expression, an accelerator opening degree for use after switching of the engine speed control mode, as a virtual accelerator opening degree. The accelerator opening degree corresponds to a speed state of an engine at an accelerator opening degree used during performance of the engine speed control mode used immediately prior to switching. If the calculated virtual accelerator opening degree is greater than an actual accelerator opening degree, the ECU switches the engine speed control mode and performs isochronous control using the virtual accelerator opening degree.

Abstract: Various methods and systems for an engine driving an electrical power generation system are provided. In one embodiment, an example method for an engine driving an electrical power generation system includes adjusting an engine speed in response to a relationship between oxygen and fuel while maintaining a power transmitted to the electrical power generation system.

Abstract: The apparatus according to the invention comprises a controller for forming a speed signal arranged to receive speed measurement data of the internal combustion engine as well as speed reference data. The apparatus additionally comprises a module for forming the internal speed reference value instead of the speed reference value set to be used when forming the control signal.

Abstract: A method and apparatus for the acceleration of a motor vehicle comprising a manually operable control member, a throttle pedal (4) actuatable by the control member and a computer (3). The control member may comprise a known-per-se throttle ring. There is provided a speed sensor (2) to detect the speed of the motor vehicle and to generate a corresponding speed signal (V). Computer (3) has stored therein transmission ratio curves (V1, V2, V3 . . . Vn) each applicable to a different vehicle speed, with each such transmission ratio curve (V1, V2, V3 . . . Vn) representing a ratio of transmitting the amount of actuation of the control member to the applicable stroke of throttle pedal (4). Computer (3) uses the speed signal (V) provided by speed sensor (2) to select one of transmission ratio curves (V1, V2, V3 . . . Vn) for actuating throttle pedal (4) with a stroke corresponding to the transmission ratio curve (V1, V2, V3 . . . Vn) selected.

Abstract: An engine control system includes a status determination module that determines states of first and second throttle position sensors (TPSs), wherein a fault state includes when one of the first and second TPSs is one of outside of a predetermined range and out of correlation with the other of the first and second TPSs, for greater than a first predetermined period. A throttle actuation module opens a throttle when an engine manifold absolute pressure (MAP) is less than a predetermined MAP threshold, at least one of the first and second TPSs is in the fault state, and the other one of the first and second TPSs is within a second predetermined period from transitioning to the fault state.

Abstract: An engine control system includes a mode selection module that is configured to select an operating mode from one of an open loop control mode, a torque control mode, and a speed control mode based on an engine speed and a driver input. An axle torque arbitration (ABA) module generates ABA predicted and immediate torque requests based on the driver input. A speed control (SC) module generates a first set of SC predicted and immediate torque requests based on engine speed. A propulsion torque arbitration (PTA) module generates PTA predicted and immediate torque requests based on one of the ABA predicted and immediate torque requests and the first set of SC predicted and immediate torque requests based on the operating mode. A torque output control module controls output torque of an engine based on the PTA predicted and immediate torque requests.

Abstract: An engine system includes a status determination module and an open-loop fuel control module. The status determination module determines whether a first ignition fuse is in a failure state. The open-loop fuel control module disables a first plurality of fuel injectors and actuates a second plurality of fuel injectors based on a first air/fuel (A/F) ratio when the first ignition fuse is in the failure state, wherein the first ignition fuse and the first plurality of fuel injectors correspond to a first cylinder bank, and wherein a second ignition fuse and the second plurality of fuel injectors correspond to a second cylinder bank.

Abstract: A flow controlling method for an auxiliary intake flow passage for use in a power unit which includes a starter clutch which is automatically engaged and disengaged in response to the engine speed. An intake air control valve (IACV) carries out changeover from water temperature dependent control (open loop control of adjusting the flow rate of the auxiliary intake flow passage in response to the warming up state of an engine) to target engine speed feedback control when the actual engine speed NE [rpm] drops to a clutch disengagement engine speed NEout (engine speed at which the centrifugal clutch is disengaged) (S3: Yes) and the opening ?1 [degree] of the throttle valve becomes smaller than a predetermined threshold value (throttle valve opening threshold value TH—?1 (S4: Yes).

Abstract: [PROBLEMS] To easily realize an improvement in fuel economy and a reduction in noise during the operation of a hydraulic shovel while securing traveling performance. [MEANS FOR SOLVING THE PROBLEMS] This hydraulic shovel (1) includes a selection means (28) for an engine (2) which is capable of arbitrarily selecting either of an isochronous control and a droop control, and a traveling detection means (4) for detecting the traveling state of a traveling device (20). The hydraulic shovel further includes a control means (3) for the engine (2) which selects the isochronous control when the traveling detection means (4) detects the traveling state to maintains the rotational speed of the engine during rated operation while an output is increased, and selects the droop control when the traveling detection means (4) does not detect the traveling state to set the rotational speed of the engine lower than that during the rated operation while the output is increased.

Abstract: A method of torque-based control for an internal combustion engine may include determining a desired airflow rate into an intake manifold of the internal combustion engine during an engine start condition, determining a torque limit for a torque-based engine control module based on the desired airflow rate, and regulating engine torque based on the determined torque limit.

Abstract: The invention concerns a method for controlling the opening of an internal combustion engine throttle valve body assembly, characterized in that it includes the following steps: specifically mapping the engine, limiting the opening angle of the throttle valve body assembly, and defining particular operating points requiring replacement of the usual mapping by the specific mapping.

Abstract: A method for adapting a measured value (MW1) of an air mass sensor comprises the steps pf determining a correction value (KW) in the event of predetermined operating conditions (BB1), namely depending on the measured value (MW1) and a comparative value (VW) which in turn depends on at least one additional measured value (MW2) of a second sensor. An adaptation value (AD1) is adapted depending on the correction value (VW), on the duration (D_AD1) since the last determination of the adaptation value (AD1) and on the change of the adaptation value (AD1) since the last adaptation of the adaptation value (AD1). Subsequently measured values (MW1) are corrected using the adaptation value (AD1).

Abstract: A center-closed power steering system provides power steering assistance in engine-off conditions for reduced fuel consumption. The power steering system includes a hydraulic pump mechanically driven by the engine, a high pressure accumulator, a steering gearbox fluidly connected to the accumulator, and a center closed valve mechanically connected to a driver-operated steering wheel. The valve is configured to selectively control flow of pressurized fluid from the accumulator to the steering gearbox to provide power steering assistance. The inner shaft of the rotary center-closed valve is provided with a cavity with V-shaped notches on the transition surfaces on lands configured to sealingly engage the inner surface of the valve outer sleeve, in order to provide a smooth transition in flow for power steering assistance, and a better driver feel.

Abstract: An ECU executes a program sets a driver requested torque based on the accelerator operation amount, and sets a torque-boost amount so that the torque-boost amount increases as the driver requested torque increases, until the driver requested torque exceeds a predetermined torque T(0). When the driver requested torque exceeds the predetermined torque T(0), the torque-boost amount decreases as the driver requested torque increases. However, the torque obtained by adding the torque-boost amount to the driver requested torque increases as the accelerator operation amount increases.

Abstract: An engine control device can include a throttle valve for adjusting an amount of air supplied to an engine, operation amount detecting sensors for detecting an operation amount of a throttle lever, a motor for driving the throttle valve between open and closed positions according to detection values of the operation amount detecting sensor 21a or the like, and throttle opening detecting sensors for detecting an opening of the throttle valve is provided with a limp-home mechanism for keeping the throttle valve in a mechanically neutral position when an abnormality occurs. When the throttle valve is in the mechanically neutral position, an ignition timing control can be switched in a stepwise manner over a predetermined time period from a regular ignition timing control to a limp-home ignition timing control.

Abstract: A positive charge of a sensor element is charged in a signal converting circuit, is converted into a positive voltage, and is outputted. When the polarity of the charge of the sensor element is inverted to the negative and an output of the signal converting circuit is decreased, the leaked charges are superimposed and become the negative. An automatic correction circuit detects the negative output and discharges the charges so as to set the input to “0”. Thus, the offset of the signal level due to the charge leakage is automatically corrected.

Abstract: A first method is for determining a variable, which characterizes a fuel injection, in an internal combustion engine of a motor vehicle in a hot-start situation wherein fuel is injected directly into at least one combustion chamber from a high-pressure region of a fuel supply system; the variable, which characterizes the injection quantity, is corrected at least in dependence upon a variable which represents a temperature of the fuel. A second method is for determining a hot-start situation in an internal combustion engine of a motor vehicle wherein a hot-start situation is determined at least based on a variable, which represents a temperature of the fuel, and based on a fuel pressure. The invention relates likewise to corresponding arrangements, a corresponding control apparatus for an internal combustion engine, a corresponding computer program having program-code means and a corresponding computer program product having program-code means.

Abstract: A vehicular engine control unit has multi-CPU configuration. A main CPU executes a control processing subject to a monitoring processing and transmits monitoring data to a sub-CPU. The sub-CPU executes the monitoring processing based on the received monitoring data. The control processing executed by the main CPU and a control characteristic may be changed or modified in accordance with an engine capacity, a vehicle equipment or the like. Similarly, the monitoring data stored in a memory connected with the main CPU is also changed in accordance with the control characteristic and the like. Therefore, the sub-CPU can be commonly used for several arrangements or the control characteristics of the main CPU.

Abstract: A method for controlling a multi-cylinder internal combustion engine having electronically controlled airflow comprising limiting a currently available maximum engine torque below maximum torque based on a limited torque output condition, the limited torque output condition not being based on current ambient temperature or pressure conditions. The method also includes determining a driver demanded torque based on a current throttle position. The method further includes controlling the engine to deliver the driver demand torque if the internal engine condition does not indicate the limited torque output condition or to deliver a calibratable percentage of the currently available maximum torque if the internal engine condition indicates a limited torque output condition.

Abstract: An operation control device of a multi-cylinder engine having a long life and low power consumption is superior in acceleration/deceleration follow-up characteristic. Individual cylinder intake pipes 15a to 15d of a multi-cylinder engine 10 controlled by an operation control device 30a, and provided with cylinders 10a, 10b, 10c, 10d are provided with throttle valves 21a to 21d of which valve openings are controlled by motors 20a to 20d. The operation control device 30a including a microprocessor 31, a program memory 32a, and a data memory 33 performs an ON/OFF control of the motors 20a to 20d of individual cylinders in accordance with a corrective data stored in the data memory 33 for correcting an air intake resistance fluctuation in each individual cylinder intake pipe and a depression degree of an accelerator pedal.

Abstract: A combustion pressure data collection system for a multi-cylinder engine includes a cylinder pressure sensor, an amplifier unit, and a channel switching unit. The cylinder pressure sensor directly detect a combustion pressure of respective cylinders, the amplifier unit converts a charge signal from the cylinder pressure sensor into voltage signal and have an automatic correction function for automatically correcting a voltage output level so that the level is setted to the same level before and after the cylinder pressure sensor generate a charge, and the amplifier unit of the respective cylinders is connected to the channel switching unit.

Abstract: A fuel injection control device of a diesel engine performs a learning injection during a no-injection period, in which a command injection quantity is zero or under. A difference between a variation in the engine rotation speed in the case where the learning injection is performed and a variation in the engine rotation speed in the case where the learning injection is not performed is calculated as a rotation speed increase. A torque proportional quantity is calculated by multiplying the rotation speed increase by the engine rotation speed at the time when the learning injection is performed. An injection correction value is calculated from a deviation between the actual injection quantity, which is estimated from the torque proportional quantity, and the command injection quantity. The command injection quantity is corrected based on the injection correction value.

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.