Abstract: A vehicle includes an engine, a controller for turning off the engine when the vehicle is idle, a motor/generator for starting the engine, an inverter for converting a DC auxiliary voltage from a battery into an AC voltage for powering the motor/generator, and a device for isolating a DC voltage from the DC auxiliary voltage to prevent voltage sag in a vehicle system during engine starting. The device includes a transformer, a rectifier/regulator, and an isolator. A mechanical relay opens, or an FET is activated, to isolate the DC voltage during engine start. A method for preventing voltage sag in an auxiliary vehicle system includes detecting a commanded engine start, comparing a measured auxiliary voltage to a threshold, isolating a predetermined DC voltage from a DC auxiliary voltage when the measured auxiliary voltage is less than the threshold, and powering the auxiliary vehicle system using the isolated DC voltage.

Abstract: A method is provided for controlling an automatic shut-off process of an internal combustion engine in a motor vehicle. An automatic shut-off process of the internal combustion engine is inhibited as a function of predetermined operating conditions. The automatic shut-off process of the internal combustion engine is inhibited, if the internal combustion engine was started by a tow start process within a current operating cycle or within a predetermined number of previous operating cycles.

Abstract: A method of starting an engine is provided. The engine includes a cylinder and a fuel injector configured to directly inject fuel into the cylinder. The method includes: at an engine start condition, receiving a sensed engine position, in response to the sensed engine position correlating with a stored engine stop position, injecting fuel directly into the cylinder at a next suitable engine position for a first combustion cycle, and in response to the sensed engine position not correlating with the stored engine stop position, rotating a shaft of the engine an angular distance without injecting fuel directly into the cylinder until the sensed engine position correlates with another parameter, and thereupon, injecting fuel directly into the cylinder at a next suitable engine position for a first combustion cycle.

Abstract: A vehicular power supply apparatus includes a capacitor, an idling stop means for stopping an engine at a halt of the vehicle and restarting the engine at driver's preset driving operation by supplying current to an engine starter with the capacitor, a current detecting means for detecting the current, a cumulative value calculating means for calculating cumulative value of the current on the basis of the detected current after starting of the engine starter until a set time elapses, and an abnormality determining means for determining, when engine revolution speed at the time the set time has elapsed is outside a preset range and the cumulative value is equal to or less than a preset value, that the capacitor is abnormal.

Abstract: A vehicle disable system including an onboard computer linked to a throttle control relay. The onboard computer is capable of communicating to a remote control center by way of telecommunications link. If certain security protocols are breached, the control center communicates a shutdown command to the vehicle by way of the telecommunications link and the vehicle initiates a shutdown procedure for incapacitating the vehicle throttle controls.

Abstract: After an engine automatic stop processing is started, a diagnosis of a starter is started at a time of t1 when an engine speed drops to a diagnosis starting speed. Before the engine speed drops to the lower limit speed at which an engine can be restarted without being cranked by the starter, the diagnosis of the starter is conducted. In the diagnosis of the starter, it is determined whether the starter is faulty based on a current passing through the starter when a relay is turned off to stop energization of the starter before the starter actually rotates after the relay is turned on. Thereby, a malfunction of the starter can be detected before the engine is automatically stopped. It is avoided to automatically stop the engine which is incapable of being automatically restarted due to the malfunction of the starter.

Abstract: The invention relates to a control method for an internal combustion engine system, capable of preventing an internal combustion engine in a state after being automatically stopped, from falling into an unrestartable state. Upon satisfaction of a given automatic stop condition, the engine 10 being running is automatically stopped (Step 11). A value of current IEBAT flowing out of a starter battery 520 is compared with a given current value IEBAT—TH, in an automatically stopped state of the engine 10 (Step S30) to diagnosis a discharging status of the starter battery 520. If a result of the diagnosis indicates that the value of current IEBAT flowing out of the starter battery 520 is greater than the given current value IEBAT—TH, it is determined that a post-attached load is detected, and the engine 10 is restarted irrespective of the satisfaction or non-satisfaction of a given restart condition.

Abstract: An implement includes an electric starter operatively connected to an internal combustion engine to start the internal combustion engine. An ignition circuit actuates the electric starter. A first normally open switch forming part of the ignition circuit is mounted on the implement at a first position and must be held closed by an operator for the ignition circuit to actuate the electric starter. A second normally open switch forming part of the ignition circuit is mounted on the implement at a second position and must be held closed by an operator for the ignition circuit to actuate the electric starter. The first position is spaced from the second position a sufficient distance to prevent an operator from closing both the first normally open switch and the second normally open switch with a single hand.

Abstract: The internal combustion engine control technique of the invention computes a TDC pass rotation speed Ntdc, which represents the rotation speed of an engine when one of multiple cylinders of the engine passes over a top dead center TDC (step S110). The control technique estimates an engine stop crank angle CAs from a map that is experimentally or otherwise obtained to represent a variation in TDC pass rotation speed Ntdc against the stop position of the engine (step S120), and specifies a fuel injection cylinder that stops in a preset cycle range including part of a compression stroke at a stop of the engine (step S130). The specified fuel injection cylinder receives lean fuel injection at a specific fuel injection timing (step S170). When the specified fuel injection cylinder is later presumed not to pass over a top dead center TDC of the compression stroke, a corrected amount of fuel is injected into the specified fuel injection cylinder (step S240).

Abstract: When a crank angle CAa of a specific cylinder, which was expected to stop in a fuel injection stop range over an intake stroke to a compression stroke at a full stop of an engine and received fuel injection, actually exceeds the fuel injection stop range and reaches a preset reference angle CA4, engine stop-state ignition control of the invention ignites the air-fuel mixture in the specific cylinder receiving the fuel injection at a moment of reaching the preset reference angle CA4 (step S260) and simultaneously injects the fuel into a certain cylinder that is in the intake stroke at the moment of the ignition (step S270).

Abstract: In an engine ECU (60), a threshold line LS1 and a threshold line LS2 are set as threshold lines used when stopping of an engine is prohibited based on a coolant temperature Tw. The threshold line LS1 is set to ensure a predetermined heating capacity. The threshold value on the threshold line LS2 is higher than the threshold value on the threshold line LS1. When the vehicle is moving, the threshold line LS2 is selected to prohibit/permit stopping of the engine. This increases the amount of heat stored in an engine coolant. When the vehicle is stopped, the threshold line LS1 is selected to prohibit/permit stopping of the engine. This decreases the frequency of starting the engine in the stopped vehicle, while maintaining the predetermined heating capacity.

Abstract: The invention relates to a method for the automatic starting and stopping of an internal combustion engine. Release of a stop mode for the internal combustion engine is enabled depending on a time period that depends on the temperature difference between the temperature prevailing in the interior of a motor vehicle and the desired temperature set by the driver.

Abstract: The present invention is directed to a start-up control apparatus for an internal combustion engine that can further improve the start-up characteristics of an internal combustion engine.

Abstract: The present invention has an object of providing a technology capable of stopping and starting an internal combustion engine more preferably by restraining vibrations when the internal combustion engine stops and a scatter in crank angle when the internal combustion engine stops. For a period till an actual stop of the internal combustion engine since a stopping condition of the internal combustion engine was established, an air quantity of air flowing into a cylinder of the internal combustion engine is decreased when a number of revolutions of the engine is higher than a specified number of revolutions (S102) and is increased when the number of revolutions of the engine is equal to or lower than the specified number of revolutions (S106).

Abstract: A vehicle engine stop/start system with regenerative braking comprising a main engine for powering a vehicle having an accessory belt drive system, a motor/generator engaged with the accessory belt drive system, an operator activated switch for selecting an operating mode, in a first operating mode an electric energy storage portion for providing electric power to a heating system when the main engine is off, a relay for preventing operation of the heating system when the main engine is running, in a second operating mode the electric energy storage portion providing electric power to the motor/generator whereby the motor/generator drives an air conditioning compressor when the main engine is off, the air conditioning compressor connected to the accessory belt drive system, a relay for preventing operation of the air conditioning compressor using the motor/generator when the main engine is running, in a third operating mode the motor/generator is used to start the main engine after the main engine has been au

Abstract: A system for overriding an EMD locomotive engine protective device which includes a low water pressure sensing device in communication with the engine cooling system for shutting down the engine when low water pressure in the engine is sensed, the override system comprising a water assist pump connected to a source of water and communicating with the protective device for supplying pressurized water to the low water pressure sensing device to maintain relatively high water pressure to prevent the device from shutting down the engine; and a controller for activating the water assist pump during start up of the engine.

Abstract: A plurality of pistons are slidably provided in cylinders of an engine respectively. The engine includes a plurality of connection pipes connecting cylinders successively experiencing combustion to each other during operation of engine, a plurality of opening-closing valves for setting each of connection pipes to a connected state or a closed state, and an ECU for controlling the plurality of opening-closing valves such that the piston is stopped at a predetermined position when the operation of the engine is stopped.

Abstract: In a method of shutting down an internal combustion engine, the shutdown of the internal combustion engine is executed upon initiation of the shut-down procedure starting from a defined operating condition which is selected in such a way that a desired rest position of the crankshaft is achieved from which the engine can be rapidly restarted.

Abstract: A vehicle includes an engine, a controller for turning off the engine when the vehicle is idle, a motor/generator for starting the engine, an inverter for converting a DC auxiliary voltage from a battery into an AC voltage for powering the motor/generator, and a device for isolating a DC voltage from the DC auxiliary voltage to prevent voltage sag in a vehicle system during engine starting. The device includes a transformer, a rectifier/regulator, and an isolator. A mechanical relay opens, or an FET is activated, to isolate the DC voltage during engine start. A method for preventing voltage sag in an auxiliary vehicle system includes detecting a commanded engine start, comparing a measured auxiliary voltage to a threshold, isolating a predetermined DC voltage from a DC auxiliary voltage when the measured auxiliary voltage is less than the threshold, and powering the auxiliary vehicle system using the isolated DC voltage.

Abstract: This invention provides a battery pack for driving a compact electric motor of a compact engine starting device mounted on a working machine, comprising lithium-based secondary battery comprising two cells, the entire discharge capacity of the cells being 500 to 2000 mAh, charging voltage per one cell being 3.0 to 4.2 V, various electronic circuits like driving and battery protection circuits of an electric motor, maximum discharge current of the battery having high rate of 10 to 60 A, the protection circuit including an overdischarge inhibit circuit (A) interposed in the electric motor driving circuit and automatically stopping the driving operation of the electric motor after time required for starting the engine elapsed, the volume of the battery pack being as extremely low as 2.5×104 to 1.0×105 mm3, the tire required until the engine is started from the actuation of the electric motor being set to an interval as short as 5 to 15 seconds, since high current can flow.

Abstract: In a motor vehicle having an internal combustion engine, an enabling condition is a function of at least one operating variable, of the motor vehicle and/or of the internal combustion engine. Starting and/or stopping of the internal combustion engine are enabled as a function of the enabling condition. It is provided that the presence of the enabling condition be checked redundantly within the scope of a 3-level monitoring concept.

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: The invention relates to a method of controlling the stopping and starting of a heat engine (2) of a vehicle. The invention is of the type in which (i) it is necessary for the vehicle to be in an engine stop request phase, and not in pre-defined operating conditions that oppose the stopping of the engine (2), in order for the engine (2) to be stopped or (ii) it is necessary for the vehicle to be in an engine start request phase, and not in pre-defined operating conditions that oppose the starting of the engine (2), in order for the engine to be started. The invention is characterised in that, for a given engine stop request phase, the engine (2) can only be stopped or started at most a pre-determined number of times.

Abstract: A vehicular power supply apparatus includes a capacitor, an idling stop means for stopping an engine at a halt of the vehicle and restarting the engine at driver's preset driving operation by supplying current to an engine starter with the capacitor, a current detecting means for detecting the current, a cumulative value calculating means for calculating cumulative value of the current on the basis of the detected current after starting of the engine starter until a set time elapses, and an abnormality determining means for determining, when engine revolution speed at the time the set time has elapsed is outside a preset range and the cumulative value is equal to or less than a preset value, that the capacitor is abnormal.

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 control scheme is provided for stopping an internal combustion engine of a hybrid powertrain during ongoing vehicle operation. The method, executed as program code in an article of manufacture comprises the following steps in the sequence set forth. First, engine operation is controlled to stop firing the engine. A damper clutch is controlled to lock rotation of the engine and the electro-mechanical transmission. Torque outputs from the first and second electrical machines are then selectively controlled to reduce engine speed. Torque outputs from the first and second electrical machines are then selectively controlled to stop rotation of the engine substantially near a predetermined crank position.

Abstract: There is provided a method of starting a spark ignition engine having multiple cylinders. The method comprises supplying air and fuel for restart into a first cylinder before the engine completely stops, and igniting the mixture of the air and the fuel in the first cylinder in response to an engine start request. In accordance with the method, by supplying air and fuel into the first cylinder before the engine completely stops, the mixture of air and fuel in the first cylinder may be homogeneous at the time of the engine start request. Also, there may be less mixture turbulence and combustion may propagate better within the cylinder. These conditions may reduce the rate of combustion in the first cylinder after a start request is initiated. The slower combustion rate may decrease temperature of the combusted gas while the cylinder wall temperature is relatively low because the engine has stopped.

Abstract: In an automatic stop device that automatically stops the operation of an internal combustion engine after a predetermined automatic stop condition is satisfied, a load acting on the engine is removed when the automatic stop condition is satisfied. When the automatic stop condition is satisfied, the between the magnitude of the load on the internal combustion engine before and after of the automatic stop condition is satisfied is determined, and an ignition timing retard amount of an ignition plug is decided such that the retard amount is increased as the difference becomes greater. The ignition timing is retarded by the retard amount substantially at the same moment as the load removing operation before the automatic stop control is initiated.

Abstract: Fuel injection is controlled to cause one of multiple cylinders to receive fuel injection and to stop in a predetermined range over an intake stroke to a compression stroke in an operation stop of the internal combustion engine. At the time of stopping the engine, fuel injection is allowed only while the observed rotation speed of the internal combustion engine is between a preset start rotation speed and a preset stop rotation speed, and at least one of the start rotation speed and the stop rotation speed are regulated based on a detected rotation stop position of a crankshaft in the operation stop of the internal combustion engine and a state of fuel injection in the cylinder stopping in the predetermined range.

Abstract: There is provided a method of stopping an internal combustion engine having a combustion chamber and an intake valve which opens during an intake stroke of an engine cycle to allow air to be inducted into the combustion chamber. The method comprises advancing closing timing and reducing a lift of the intake valve to reduce air charged in said combustion chamber and shutting off fuel to the combustion chamber upon a request of engine stop, maintaining a speed of the internal combustion engine within a predetermined range without supplying fuel to the combustion chamber and with the advanced closing timing and the reduced lift of the intake valve at least for one intake stroke of the combustion chamber, and decreasing the speed of the internal combustion engine with the advanced closing timing and the reduced valve lift of the intake valve from the predetermined range.

Abstract: Operation of a second or additional engine is initiated based on throttle position, vehicle speed and output level of the operating engine or engines. A second or additional engine is stopped based on throttle position and operation of the first engine when the second or additional engine has been idling for a predetermined period of time. Idling of an engine is started or stopped based on various conditions of the vehicle, such as battery voltage, ambient air temperature, brake cylinder pressure, operator input, battery charging current, and direction input.

Abstract: In one aspect, an internal combustion engine includes a fuel injector for injecting fuel into a combustion chamber to produce an air-fuel mixture in the combustion chamber, a spark plug for igniting the air-fuel mixture to cause combustion in the combustion chamber and a controller controls the spark plug to cause combustion in the combustion chamber to apply a torque to start the engine from a stopped condition. The controller determines whether the operation of the engine will be stopped, and adjusts an operating condition of the engine if the controller determines the engine operation will be stopped.

Abstract: An idle stop controller connects to a vehicle computer so as to implement an idle stop on request of the driver from a signal derived from a foot brake, a parking brake, or a voice-activated switch. It also implements an engine restart on request of the driver, and this can be done in several ways.

Abstract: A method for operating an internal combustion engine having at least one triggerable intake valve and at least one triggerable discharge valve, in which the internal combustion engine is directly started in a start-up operating mode and, following the start, is operated in at least one other operating mode. A starting discharge instant of a discharge valve of the internal combustion engine that is used during the start-up operating mode is retarded in time with respect to a standard discharge instant so as to improve the direct start-up characteristics of the internal combustion engine. In addition, to further improve the direct start-up characteristics, it is possible to retard a closing instant of an intake valve that is used during the start-up operating mode with respect to a standard closing instant.

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: In an engine starting control system of an internal combustion engine in which an eco-run control is performed, a combustion stroke that each cylinder reaches when the internal combustion engine comes to an engine stopped state by the eco-run control is predicted, and in an expansion stroke cylinder that the predicted combustion stroke is an expansion stroke, fuel of a predetermined amount is injected from an intake passage injection valve into an intake passage just before the internal combustion engine comes to an engine stopped state, and in the expansion stroke cylinder, an engine start of the internal combustion engine in an engine stopped state is performed by injecting fuel from the cylinder injection valve into the cylinder and igniting the air-fuel mixture in the cylinder by an ignition plug.

Abstract: A method for managing the “stop-and-start” mode in a motor vehicle equipped with an internal combustion engine; the method provides for the “stop-and-start” mode to be enabled or disabled as a function of a state of charge (SOC) of a battery of the motor vehicle, as a function of a state of motion of a crankshaft of the internal combustion engine and as a function of the electric power consumed overall by the electrical consumers of the motor vehicle.

Abstract: Operation of a second or additional engine is initiated based on throttle position, vehicle speed and output level of the operating engine or engines. A second or additional engine is stopped based on throttle position and operation of the first engine when the second or additional engine has been idling for a predetermined period of time. Idling of an engine is started or stopped based on various conditions of the vehicle, such as battery voltage, ambient air temperature, brake cylinder pressure, operator input, battery charging current, and direction input.

Abstract: A method of regulating a crankshaft position in a hybrid electric vehicle includes deactivating cylinders of an internal combustion engine, driving a crankshaft of the internal combustion engine using an electric machine, and determining a target crankshaft position when a rotational speed of the crankshaft crosses a first threshold. The crankshaft is driven towards the target crankshaft position at a nudge rotational speed, and rotation of the crankshaft is braked using the electric machine when a brake crankshaft position is achieved at the target rotational speed. Rotation of the crankshaft is arrested at the target position.

Abstract: A starting system rotates and starts an internal combustion engine by injecting fuel into a predetermined cylinder using an injector and igniting the fuel using an ignition plug, and upon starting the engine, the fuel pressure supplied to the injector is detected, and the engine is started by combustion in the predetermined cylinder only when the detected pressure is at or greater than the predetermined pressure, thereby guaranteeing the fuel pressure when combustion starting is employed, and consequently the engine can be securely started.

Abstract: A control apparatus includes a driving device that is capable of operating regardless whether the engine is running or not. A variable valve actuation mechanism is driven by the driving device. During an idling operation of the engine, a control section controls the driving device such that the variable valve actuation mechanism maintains the valve timing at a valve timing advanced relative to a most retarded valve timing. The control section controls the driving device such that the variable valve actuation mechanism changes the valve timing to the most retarded valve timing after a stopping operation of an autonomous operation of the engine is initiated. Therefore, shock due to the initiation of the engine starting operation is reduced without decreasing fuel economy.

Abstract: An internal combustion engine includes an advanced vehicle system controller (VSC) that calculates a total power demand to meet a driver wheel power demand plus any accessory loads and independently schedules an engine speed and load operating point to meet the total power demand. A reduction in available engine brake power that is not associated with a driver input, and would ordinarily cause the VSC to respond by raising engine speed, is detected. The driver wheel power demand is reduced to compensate for the reduction in available engine brake power such that the VSC does not need to raise engine speed to meet the driver wheel power demand. A magnitude of the reduction may be determined according to a calibration map to allow a trade off to be made between driveability and noise, vibration, and harshness.

Abstract: A coil driving a contact of an ignition and injection relay is connected to a connection line of a main relay and an ECU. When an ignition switch is turned off, the ECU drives an ignition device and an injection device for a prescribed period thereafter. Then, the ECU turns off a main relay to perform self-shutting-off, and the ignition and injection relay is turned off interlocked with an operation of the main relay being turned off.

Abstract: The control apparatus-integrated generator-motor has: a generator-motor; and a control apparatus that is constituted by an inverter, a control circuit, a temperature sensor, etc. The control circuit determines whether or not switching element temperature will exceed the maximum permissible temperature when a command for an automatic engine stopping operation is issued. Then, if it is determined that the maximum permissible temperature will be exceeded, generated output of the generator-motor is reduced immediately before the automatic engine stopping operation in such a way that the switching element temperature will not exceed the maximum permissible temperature. The engine is subsequently stopped automatically.

Abstract: An engine has variable-valve mechanisms. An engine control system has an engine control unit for executing automatic stop and start control. At an automatic-stop, the variable-valve mechanisms are controlled to obtain a valve operation characteristic suitable for a restart of the engine. When a catalyst is in an inactivated state, the variable-valve mechanisms are controlled to reduce the amount of residual gas leaking out from cylinders. At an automatic-start, the control of the variable-valve mechanism is prohibited and an intake air is adjusted by using a throttle valve. At an automatic-stop, the engine speed is abruptly reduced so that the engine speed passes through a resonant revolution speed area in a short period of time. When the voltage of a battery is low, the control of the variable-valve mechanism may be prohibited.

Abstract: A system and method to control engine valve timing of an internal combustion engine. Electromechanical valves are controlled to improve engine fuel economy. Further, the method can adjust valve operation to provide air-fuel charge motion and increase combustion stability.

Abstract: If it is determined that the present engine startup is a high-temperature startup, immediately fuel injection in concert with start of cranking is prohibited. After a delay time elapses following the start of cranking, or when THC<THCh is satisfied, fuel injection is started. Therefore, the cranking during the delay time cools interior of the combustion chambers. Since fuel injection starts after the cooling, pre-ignition can be prevented.

Abstract: A method of performing a first start of an internal combustion engine of a hybrid electro-mechanical vehicle includes activating an auxiliary power module prior to the engine starting to direct power stored in a high voltage battery (used for powering the motor/generator(s) on the hybrid vehicle) through the auxiliary power module at a voltage level of a low voltage battery to assist the low voltage battery in powering a starter motor for starting the internal combustion engine.

Abstract: At a time of stopping an internal combustion engine, inertia energy of the engine is kept constant, for example, by controlling a number of engine revolution constant, while controlling combustion of the engine. By utilizing the controlled inertia energy, the engine is stopped at a predetermined crank angle position. Since the engine is stopped at the predetermined crank angle position by utilizing the controlled inertia energy, a large amount of energy for controlling the stop position of the energy is not needed, and the energy needed for the stop control can be reduced. Since the inertia energy utilized for the stop control is always controlled in a predetermined state, the engine can be stopped at a proper position reliably each time.

Abstract: In an automatic stop device that automatically stops the operation of an internal combustion engine after a predetermined automatic stop condition is satisfied, a load acting on the engine is removed when the automatic stop condition is satisfied. When the automatic stop condition is satisfied, the between the magnitude of the load on the internal combustion engine before and after of the automatic stop condition is satisfied is determined, and an ignition timing retard amount of an ignition plug is decided such that the retard amount is increased as the difference becomes greater. The ignition timing is retarded by the retard amount substantially at the same moment as the load removing operation before the automatic stop control is initiated.