Abstract: In a method for controlling an internal combustion engine (1) for a motor vehicle in stop-start operation, the internal combustion engine (1) is operated in the idling operating state. If there is a request for switch-off of the internal combustion engine (1) the torque produced by the internal combustion engine (1) is reduced while fuel continues to be injected. The fuel injection is switched off if the speed of the internal combustion engine (1) reaches a predetermined minimum value. The torque produced by the internal combustion engine (1) is increased again if the request for switching off the internal combustion engine (1) is canceled before the minimum speed is reached.

Abstract: In a control apparatus for an internal combustion engine having a valve timing control portion controlling the timing opening and closing of an intake valve disposed in an intake port communicating with a cylinder of the internal combustion engine, when the internal combustion engine is being started from a cold condition, multi-stroke operation is set, in which one combustion cycle of the internal combustion engine includes two or more intake and compression strokes, formed by a first intake stroke and the first compression stroke and a second intake stroke and compression stroke, followed by a combustion stroke and an exhaust stroke. The valve timing control portion controls a lift of the intake valve during the first intake stroke and the first compression stroke to a low lift amount, which is smaller than the normal lift amount required for intake of a requested intake air amount, and controls the lift of the intake valve in a second intake and a second compression stroke to the normal lift amount.

Abstract: An engine control module includes an engine starting module that communicates with an electric motor to operate an internal combustion engine including M fuel injectors and that determines whether manifold pressure is below a manifold pressure threshold. A warming module communicates with the M fuel injectors to inject fuel into N of M the fuel injectors when the manifold pressure is less than the manifold pressure threshold. N and M are integers and N is less than M.

Abstract: In a method for controlling a fuel supply system of an internal combustion engine with at least one combustion chamber, into which fuel can be injected via a fuel injector, the fuel injector being activated for the implementation of a normal start-up with specified injection parameters when the fuel supply system is filled, the specified injection parameters are modified for the acceleration of an initial start-up of the internal combustion engine when a filling of the fuel supply system with fuel has been implemented to evacuate the air from said fuel supply system.

Abstract: A non-contact neutral sensing apparatus with directional feedback in a vehicle directional control system for an agricultural or construction vehicle.

Abstract: In a starting system of an internal combustion engine, an injector for injecting fuel directly into a combustion chamber and an ignition plug for igniting an air/fuel mixture in the combustion chamber are provided, and a throttle device is provided in an intake pipe. During stopping of the engine, the starting system operates the throttle device to open a throttle valve to a predetermined throttle opening at a throttle opening speed that is set based on the intake pressure. Upon a start of the engine, the starting system actuates the injector to inject the fuel into a cylinder that is in the expansion stroke, and actuates the ignition plug to ignite the mixture in the combustion chamber.

Abstract: Parameters having a correlation with a crowded condition of a road traveled by a vehicle are inputted to an ideal fuel consumption estimation model. This ideal fuel consumption estimation model estimates an ideal fuel consumption of vehicle based on the parameters. The ideal fuel consumption of vehicle estimated by the ideal fuel consumption estimation model is outputted to an output portion.

Abstract: Method for controlling a start-up of an internal combustion engine, an actuation of the internal combustion engine being begun and maintained by an electric machine in order to set the internal combustion engine into independent motion, thereby characterized, in that the actuation of the internal combustion engine is concluded before an initial combustion in the internal combustion engine takes place

Abstract: A control apparatus for an internal combustion engine that is startable by a motor driven by electric power supplied by an electric storage device, includes: a starting mode selection device for selecting either a first mode or a second mode as starting mode of the internal combustion engine; a control device for setting an output mode during outputting the electric power to the motor from the electric storage device, according to a result selected by the starting mode selection device, wherein the control device is adapted to set a flat mode, corresponding to the first mode, in which a predetermined electric power is continuously output and a pulse mode, corresponding to the second mode, in which electric power that varies with amplitude greater than a predetermined amplitude is output.

Abstract: When an internal combustion engine controller determines that an internal combustion engine is experiencing difficulty in starting, the fuel injection amount is corrected according to a first estimated ethanol (alcohol) concentration value that is approximately in the middle concentration value between the alcohol concentration of the fuel with the highest alcohol concentration and the alcohol concentration of the fuel with the lowest alcohol concentration among the fuels that can possibly be purchased in the market. If it is determined that the engine is experiencing difficulty in starting using the corrected fuel injection amount, the fuel injection amount is corrected a second time using a second estimated alcohol concentration value different from the first estimated alcohol concentration value. As a result, the engine air-fuel ratio can be optimized when starting the engine, so that poor engine starting can be quickly overcome.

Abstract: A method for starting a blower motor with a locked rotor condition, the motor having one or more speed settings, each speed setting having a reference voltage and reference current value associated therewith, the method comprising, from a motor off condition, applying the reference voltage to the motor, the reference voltage associated with a desired speed setting; measuring current flowing through the motor to define a measured current value; comparing the measured current value to the reference current value associated with the desired speed setting to determine if a locked rotor condition exists; if a locked rotor condition exists, increasing the motor speed from the desired speed setting until either the output speed is at a maximum speed or the locked rotor condition ceases to exist; and adjusting the motor output speed value to the desired speed setting.

Abstract: A power output system that provides power to a driveshaft is provided which includes an internal combustion engine, an electric motoring mechanism, an electric storage device, a first exhaust gas channel that guides exhaust gas from the engine directly to an exhaust gas purifying catalyst, a second exhaust gas channel which guides the exhaust gas from the engine to the exhaust gas purifying catalyst via an unburned-component adsorber, a channel switching mechanism operable to switch a channel of the exhaust gas from the engine between the first exhaust gas channel and the second exhaust gas channel, a pressure accumulator operable to accumulate therein a negative pressure produced through rotation of the engine, a negative-pressure introducing/releasing mechanism that selectively permits and inhibits introduction of the negative pressure from the pressure accumulator into the channel switching mechanism, and a controller that controls the electric motoring mechanism and the negative-pressure introducing/relea

Abstract: There is provided a method for starting a spark ignition engine having multiple cylinders. The method may comprise supplying air and fuel for restart into a first cylinder before said engine completely stops, and igniting the mixture of said air and said fuel in said first cylinder in response to an engine restart request, wherein said first cylinder is on an expansion stroke when said engine stops. The method may also include, after said piston in said first cylinder starts moving, injecting fuel into a second cylinder that is on a compression stroke when said engine stops, on a compression stroke where a piston of said second cylinder is moving in a direction opposite to an operative direction of said piston in said first cylinder.

Abstract: In a process of automatically stopping a diesel engine upon fulfillment of automatic engine stop conditions, an ECU cuts off fuel injection when the engine speed equals a preset first engine speed N1. The ECU limits the amount of intake air at the first engine speed N1 and, then, increases the amount of intake air at a point in time when the engine speed equals a second engine speed N2, at which point a piston in a cylinder which will be on a compression stroke at engine stop is expected to transfer to a last intake stroke, so that the piston in the compression stroke cylinder at engine stop stops at a point within a specified range closer to the bottom dead center than a piston in a cylinder which will be on an expansion stroke at engine stop.

Abstract: A system for an engine, comprising of a cylinder of the engine; a first injector configured to inject a first substance to said cylinder; a second injector configured to inject a second substance to said cylinder; and a controller configured to commence combustion in the engine by injecting fuel into said cylinder, where said fuel is injected by only one of said first and second injectors during said start and/or warm-up.

Abstract: A method of controlling an internal combustion engine during a start up phase, include cranking the internal combustion engine to initiate the start up phase and controlling an alternator load so as to increase load on the engine during at least a part of the start up phase, thereby to control engine speed flare and/or at least partially to recover energy used to start the internal combustion engine. Even when base ignition timing and/or fueling calibration for starting the engine is modified to improve combustion stability, the alternator load can be controlled to control engine speed flare and/or recover start energy.

Abstract: A method is described for starting an internal combustion engine having an E-machine coupled to it in a motor vehicle, after the input of a certain torque command at a drive control of the internal combustion engine, the internal combustion engine being accelerated for the start by the E-machine, and the internal combustion engine being set by the drive control, via actuators, to specified characteristics values for the start. To reduce exhaust gas emissions at the start of the internal combustion engine, the internal combustion engine is accelerated by the E-machine, without the injection of fuel, until the engine torque that is able to be implemented by the internal combustion engine, essentially corresponds to the torque command, and the injection of fuel into the internal combustion engine is only then released.

Abstract: An engine control device for a construction machine of the present invention is configured so that the engine control device comprises an engine as a power source, a controller for performing an automatic stop control to automatically stop the engine when a predetermined automatic stop condition is met, a water temperature sensor for detecting a cooling water temperature of the engine, and that after start-up of the engine, even if the automatic stop condition is met, the engine is not automatically stopped until the detected water temperature reaches a predetermined value or more to complete a warm-up operation. The engine control device is also configured so that before the engine is automatically stopped, a cool-down operation of the engine is performed as required and after the engine is stopped, the engine is restarted as required and the warm-up operation is performed.

Abstract: In a starting system of an internal combustion engine including a fuel injection valve that directly injects fuel into a corresponding cylinder and a spark plug that ignites an air-fuel mixture in the cylinder, injection of the fuel from the fuel injection valve and ignition performed by the spark plug are stopped when engine stop conditions are met. If the engine restart conditions are met during rotation of the engine after the engine stop conditions are met, the fuel is injected from the fuel injection valve into an expansion-stroke cylinder that is in the expansion stroke at the time when the engine restart conditions are met, and the mixture formed in the expansion-stroke cylinder is ignited by the spark plug.

Abstract: An engine control apparatus of the present invention sets a target torque ?e, when the save mode m2 is set as an engine mode, according to the formula: ?e?TRQ2*RATIO1+TRQ3*(1?RATIO1) Basic target torque TRQ2 and TRQ3 are set based on the engine speed Ne and the throttle opening-degree ?acc and with reference to the normal mode map Mp1 and the power mode map Mp3 respectively. The correction factor RATIO1 is an addition rate which is set based on an accelerator opening-degree ?acc and a vehicle speed V and with reference to a correction factor map Mr1. The correction factor map Mr1 stores a correction factor RATIO1 near 0 (although 1?RATIO1>0) when the vehicle speed V is low and the accelerator opening-degree ?acc is high.

Abstract: A slave controller for a remote vehicle starting system. The slave controller is mounted in a vehicle having an internal combustion engine started by a starter motor. The slave controller has an antenna circuit input for connection to an antenna circuit suitable for picking up an RF signal and an output. The slave controller also has a control module, coupled to the antenna circuit input. The control module is responsive to a signal transmitted through the antenna circuit input and originating from the antenna circuit to generate a command signal at the output for directing the starter motor to crank the internal combustion engine. The control module is operative to establish a data communication with an external entity through the antenna circuit input to perform a maintenance procedure.

Abstract: Provided is an engine starting system which is highly reliable in that a battery does not run out even if a manual switch is tampered and operated many times by a third party. Equipment on the propelled object side (2) includes an actuation signal refusing unit (22a) which avoids responding to an actuation signal from a switch (31) for a third predetermined time in at least one of the states where a number of actuation signals successively transmitted from the switch without producing an answer signal thereto has become equal to or larger than a prescribed number of times predetermined in a first predetermined time period and where the actuation signal has been kept tuned ON for a period equal to or longer than a second predetermined time period without producing an answer signal thereto.

Abstract: A micro-hybrid motor vehicle 2 having an engine 5 started by an electrical starter 6 is disclosed having a starter system that adaptively responds to ageing of an electrical power source such as a capacitor 12 used to power the starter motor 6 so as to maintain engine starting performance. The starter system includes a controller 20 which is programmed to increase the voltage used to charge the capacitor 12 when it is determined that the state of health of the capacitor 12 has degraded.

Abstract: An ignition device (ECU and a drive circuit) for a spark ignition type internal combustion engine that directs an ignition with generation of a predetermined start signal (i.e., falling of an ignition signal) has a circuit for monitoring generation timing of the start signal and for prohibiting the ignition based on the start signal when the start signal is generated at abnormal timing. In particular, the ignition device has a circuit for determining whether the start signal is generated at predetermined start timing and a circuit for prohibiting the ignition based on the start signal when the above circuit determines that the start signal is not generated at the start timing. Thus, damages to the engine and peripheral devices due to the ignition at the abnormal timing can be reduced.

Abstract: A fuel injection device of a diesel engine capable of smoothly starting the diesel engine to match an environment around the engine by saving a fuel, reducing the exhaustion of carbon dioxide, and suppressing black smoke in starting the diesel engine. A rack (45) is operated by an actuator (41) from a lowest rack position to a starting increased fuel amount position at a lower speed than that at which the rack is operated by the actuator from the lowest rack position to the starting increased fuel amount position at the maximum operating speed. The operating speed of the rack (45) is set in two stages, and the later operating speed of the rack is reduced less than the operating speed of the rack up to a set intermediate rack target value P2. Then, the operating amount of the rack (45) per hour is reduced after the ignition of the engine (1) is recognized. Also, the operating speed of the rack (45) is controlled according to an atmospheric temperature in starting the engine.

Abstract: An engine control apparatus which can ensure and maintain a stability and constant exhaust emission characteristics even in such a condition that a nature of a fuel used as present is unsure, and which is robust among different fuel natures, comprising a plurality of different nature fuel quantity computing means and an operating condition detecting means for detecting an operating condition of an engine, wherein a first nature fuel quantity computing means among the plurality of different nature fuel quantity computing means is used as a fuel quantity computing means during an engine start, and the first nature fuel quantity computing means is forcibly changed over into a second nature fuel quantity computing means if an engine operating condition detected by the operating condition detecting means satisfies a predetermined term.

Abstract: A remote starting device prevents the temperature of exhaust gas from being made too high or the amount of toxic gas around a vehicle from being made too large by engine starting by remote control. The remote starting device controls a starter for starting an engine of the vehicle when receiving an engine start command from a portable transmitter. The remote starting device includes a section for deciding whether the engine starting has been frequently conducted, and a section for limiting the engine starting through receiving the engine start command from the portable transmitter when it is decided that the engine starting has been frequently conducted.

Abstract: There is provided a start control apparatus for an internal combustion engine (1) which starts the engine with injecting fuel to each cylinder (2) of the internal combustion engine in an intake stroke. The apparatus comprises a stop position distinction device (20) which distinguishes a piston position at a time of a stop of the internal combustion engine, and a fuel injection amount control device (20) which specifies a cylinder in which a piston stops in the intake stroke based on a distinction result of the stop position distinction device and which increases a fuel injection amount at starting for the specified cylinder more than a fuel injection amount for other cylinders.

Abstract: A plug of a power cord of a block heater which is mounted to a cylinder block of an engine, is connected to a household power receptacle to energize the block heater during an engine stoppage in cold climate. Thus, an engine coolant is kept warm to prevent freeze. Existence/nonexistence of the energization to the block heater during the engine stoppage is determined based on a behavior of coolant temperature or a behavior of engine rotation speed immediately after an engine start. If it is determined that the energization to the block heater exists, abnormality diagnosis of a cooling system is prohibited or a condition for the abnormality diagnosis is corrected and estimation coolant temperature is corrected.

Abstract: Disclosed is a key-less ignition system for a vehicle. The system allows a user to automatically start the engine of a vehicle via a push button and a remote passive transponder. The system finds particular application in conjunction with smaller vehicles such as motorcycles. In one specific embodiment of the invention, the system is used in connection with an anti-theft device, such as a wheel lock. In yet another embodiment of the invention, the key-less ignition system is used in connection with a records management system, whereby service technicians can remotely retrieve maintenance records relating to the vehicle.

Abstract: A random number generation device including a first random number generation part which generates a new random number based on a random number which was previously generated and which outputs the random number generated by the first random number generation part, the random number generation device includes: a second random number generation part which generates a random number different from the random number generated by the first random number generation part; and an operation part which outputs a random number obtained by a prescribed operation using a random number generated by the second random number generation part on a random number generated by the first random number generation part when generating a first random number after start of supplying electric power.

Abstract: Control over vehicle power supply, engine starting control, and control over locking/unlocking of a steering are to be reliably exercised at a reduced cost. Even when there is a breakage in a ground line of a power supply ECU, a ground line for the power supply ECU is formed by a path including a diode and a start switch or a path including a diode and a transistor of an engine 3 to start the engine. Even when a power supply ECU runs away for some reason, another end of a NAND circuit is connected to ground through a path formed by a diode and the transistor or a path formed by a diode and a transistor to interrupt the supply of power to a steering lock ECU.

Abstract: Provided is an engine starting system which is highly reliable in that a battery does not run out even if a manual switch is tampered and operated many times by a third party. Equipment on the propelled object side (2) includes an actuation signal refusing unit (22a) which avoids responding to an actuation signal from a switch (31) for a third predetermined time in at least one of the states where a number of actuation signals successively transmitted from the switch without producing an answer signal thereto has become equal to or larger than a prescribed number of times predetermined in a first predetermined time period and where the actuation signal has been kept tuned ON for a period equal to or longer than a second predetermined time period without producing an answer signal thereto.

Abstract: The start control device for a vehicle has previously stored a plurality of coolant temperature maps in association with information on a plurality of engines in which determination rotational speeds for use in determining whether or not the each engine has achieved complete combustion are determined for several different engine coolant temperatures. The start control device for a vehicle starts cranking when detecting a signal from an engine starting switch, selects a coolant temperature map associated with engine information acquired out of the plurality of coolant temperature maps, determines a determination rotational speed NE determined for the coolant temperature at start in the selected coolant temperature map, and terminates the cranking when the engine rotational speed reaches the determination rotational speed NE.

Abstract: A method carried out by a control device, the method holding a valve EGR completely opened during a determined short time after a starting phase of a diesel engine, which is provided with an EGR recirculation, and controlling the valve EGR in a partially closed state during the starting time of the engine to increase the engine speed to a threshold speed corresponding to the end of the starting phase. The control is progressively carried out according to a determined closing instruction via a calibration by using data representative of engine speed and ambient temperature. The dynamically controlled recirculation makes it possible, in particular, to accumulate more fuel at the staring phase without increasing injected quantities, to increase the speed of engine actuated by a starter, and to avoid engine blocking.

Abstract: A rotation speed calculation interval is set near a combustion top dead center of each cylinder of an engine. An interval rotation time necessary for a crankshaft to rotate through the rotation speed calculation interval is calculated as angular speed information of the crankshaft in the rotation speed calculation interval for each combustion stroke of the engine. Engine rotation speed is calculated based on the interval rotation time. The angular speed information of the crankshaft in the rotation speed calculation interval set near the combustion top dead center reflects a combustion state or generated torque. By calculating the engine rotation speed based on the angular speed information, the engine rotation speed highly correlated with the combustion state or the generated torque of the engine can be calculated.

Abstract: In a hybrid vehicle in which a mode change between an electric drive mode and a hybrid drive mode is carried out based on information concerning an operating condition and a driving status, an impairment of operability due to a change of the drive mode at a reverse travel of the vehicle is prevented. Upon a start of the reverse travel, the drive mode before the start of the reverse travel is continued at the start of the reverse travel.

Abstract: There is provided a control scheme for restarting an internal combustion engine of a hybrid powertrain during ongoing vehicle operation. The method comprises generating a torque output from an electrical machine to rotate the engine, and determining an engine crank torque. The torque output from the electrical machine is selectively controlled based upon the engine crank torque. The engine is fired when rotational speed of the engine exceeds a threshold. An engine torque simulation model accurately determines engine compression pressures in real-time to accommodate changes in engine operating conditions, based upon present engine operating conditions.

Abstract: A selective combustion starting system and method selectively provides a proper amount of fuel to one or more combustion chambers in an internal combustion engine. The particular combustion chambers selected depend upon the state of the piston of the combustion chamber and the volume of the combustion chamber, which is dependent upon the position of the piston. Once proper amounts of fuel have been provided to the one or more combustion chambers, the resulting fuel air mixture in the combustion chambers is ignited and combusts to rotate the crankshaft of the engine to commence normal operation of the engine.

Abstract: An eco-run control device is mounted on a vehicle and is capable of performing eco-run control to stop an engine when predetermined stop requirements are satisfied and restart the engine when predetermined start requirements are satisfied later. This eco-run control device includes: a monitoring unit that monitors the state of an ignition; a communicating unit that communicates with a plurality of control devices that receive power supplies from a power supply line that is connected to a power source via the ignition; and an initialization controlling unit that initializes the data with respect to the eco-run control stored in a memory, when the monitoring unit determines that the ignition is in an OFF state, and that the communications with two or more of the control devices are interrupted.

Abstract: An eco-run control device sends an engine stop request to an engine control device when predetermined stop requirements are satisfied, causes the engine control device to perform an engine stop control operation, and drives a starter to restart the engine when predetermined restart requirements are satisfied during the engine stop control operation. This eco-run control device includes: a detecting unit that detects a starting operation to start the engine; and a control unit that causes the starter to restart the engine, if the starting operation is detected during the engine stop control operation and the engine speed is lower than a predetermined speed.

Abstract: An internal combustion engine has an exhaust passage provided with a catalyst to purify exhaust gas. A control system for the internal combustion engine performs a quick-warming control to accelerate warming up of the catalyst when a predetermined condition is satisfied after the internal combustion engine begins cold startup. The control system further performs an advance control to advance an ignition timing further than an idling-ignition timing at the time of an idling operation in a period between beginning of the cold startup of the internal combustion engine and a time point where the quick-warming control is started.

Abstract: In a motor vehicle, when an intake air temperature Ta is not lower than a preset reference temperature Tref, warm-up drive control selectively uses an evaporated fuel processing acceleration operation curve, which gives a high level of a negative pressure in an intake manifold, to set a target drive point of an engine and controls the operation of the engine. This ensures good emission of the engine. When the intake air temperature Ta is lower than the preset reference temperature Tref and when the setting of a heating demand Hq requires heating, on the other hand, the warm-up drive control increases an EGR quantity from an ordinary level and switches over an operation mode of a cooling system for the engine to a warm-up circulation mode for making the flow of a cooling medium bypass a radiator.

Abstract: The present invention provides an intake air control that is capable of suppressing the exhaust emission at engine startup and quickly activating a catalyst after engine startup. An engine has a variable valve actuation mechanism for continuously adjusting at least a lift amount of an intake valve to control an intake air amount. At startup of the engine, the lift amount is set in accordance with the number of times that a piston in a cylinder of the engine has passed through a top dead center until a rotational speed of the engine reaches an idle rotational speed. After an engine water temperature becomes greater than a predetermined value, the lift amount is corrected using a proportion term that is determined based on the engine rotational speed and an integral term that is determined based on a difference between the engine rotational speed and the idle rotational speed until the engine rotational speed reaches the idle rotational speed.

Abstract: An engine control system and an engine control method for improving the ability to start an engine by changing the execution timings of predetermined sumchecks in ROM to shorten the time required for initialization of the system. Upon starting an ECU with a power supply supplied from an AC generator as a result of an operation of a kick starter, a CPU initialization, which includes a hardware reset and a software initialization, is executed. An ignition timing calculation sumcheck, which is required for the calculation of an ignition timing, and injection timing calculation sumcheck, which is required for the calculation of an injection timing, are not executed in a period of the software initialization. Instead, they are executed during BG (background) processing after a movement to routine processing, which upon completion of the software initialization, starts the ECU to permit driving and controlling an igniter and a fuel injector.

Abstract: Exhaust emission control is exercised to restrict the exhaust amounts [g] of HC, CO, NOx, and the like. However, since the intake air amount for startup unduly increases due to an engine speed overshoot for startup, the exhaust amounts of HC, CO, and NOx increase excessively. Therefore, there is a need for optimizing the intake air amount for startup. The present invention proposes an engine startup control method that assures excellent startability and low exhaust emissions (small gas amount). Disclosed is an engine control device for starting an engine (from its stop state). The engine control device includes a section for setting a target engine operating state of each combustion; a section for detecting an actual engine operating state of each combustion; and a section for computing a control parameter for each subsequent combustion in accordance with the target engine operating state of each combustion and the actual engine operating state of each combustion.

Abstract: The internal combustion engine control apparatus of the invention starts gradually delaying an ignition timing ? for catalyst warm-up, immediately after a start of an internal combustion engine. When the ignition timing ? is delayed to or below a preset reference timing ?ref, a fuel amount increase flag F1 is set to 1 to start increase correction of a fuel injection amount. The internal combustion engine control apparatus then starts gradually increasing a throttle opening TH to a preset target opening THset. The increase correction of the fuel injection amount is terminated after elapse of a preset time t3 since the increase of the throttle opening TH to the preset target opening THset. This arrangement enables the increase correction of the fuel injection amount according to the requirement, thus improving the fuel economy and the emission.

Abstract: An engine start controller having a starter motor that is driven by battery to start engine, an activation switch that sends to the starter motor a START command for starting the engine, an activation circuit that connects the starter motor to the battery to supply a drive current, and an engine start control unit that issues an OPERATE command for operating the activation circuit when receiving the START command from the activation switch, and supplies the drive current to the starter motor. The controller is provided with a bypass circuit that directly sends to the activation circuit the START command that has been sent from the activation switch.

Abstract: A glow plug is provided in a combustion chamber of a diesel engine. An ECU diagnoses existence or nonexistence of a disconnection abnormality of the glow plug through a controller. When there is an abnormality in the glow plug, processing for cutting fuel supply of an abnormal cylinder, processing for increasing fuel injection quantity of a normal cylinder, processing for delaying injection timing of the abnormal cylinder, or processing for delaying valve timing of an intake valve of the abnormal cylinder is performed. Thus, suitable startability of the engine can be ensured even when the abnormality occurs in the glow plug.

Abstract: A diagnostic cold start emissions control system for an internal combustion engine includes a control module having a calculated engine-out energy module, an engine-out energy residual module, and a diagnostic system evaluation module. The calculated engine-out energy module is in communication with the engine-out energy residual module and is configured to determine an operating engine-out energy flow based on an operating engine torque. The engine-out energy residual module is in communication with the diagnostic system evaluation module and is configured to determine an engine-out energy residual based on the determined engine-out energy flow and an expected engine-out energy flow. The diagnostic system evaluation module is configured to determine whether the determined engine-out energy residual meets a predetermined value indicative of proper cold start emissions control.