Abstract: A control method for an engine includes determining whether a predetermined fuel supply stop condition has been fulfilled, executing stop time vibration suppression control of, after stop of fuel supply in response to fulfillment of the predetermined fuel supply stop condition, temporarily performing fuel supply to the engine to suppress vehicle vibration, and stopping fuel supply to all cylinders after the execution of the stop time vibration suppression control. The stop time vibration suppression control includes determining whether a first predetermined number of cylinders have undergone a combustion stroke after the stop of the fuel supply, the first predetermined number being according to a engine revolution speed or a reduction ratio from the engine to drive wheels, and in a case where the first predetermined number of cylinders have undergone the combustion stroke, performing fuel supply to a second predetermined number of cylinders.

Abstract: A control method for an engine includes determining whether a predetermined fuel supply stop condition has been fulfilled, executing stop time vibration suppression control of, after stop of fuel supply in response to fulfillment of the predetermined fuel supply stop condition, temporarily performing fuel supply to the engine to suppress vehicle vibration, and stopping fuel supply to all cylinders after the execution of the stop time vibration suppression control. The stop time vibration suppression control includes determining whether a first predetermined number of cylinders have undergone a combustion stroke after the stop of the fuel supply, the first predetermined number being according to an engine revolution speed or a reduction ratio from the engine to drive wheels, and in a case where the first predetermined number of cylinders have undergone the combustion stroke, performing fuel supply to a second predetermined number of cylinders.

Abstract: A fuel injection control apparatus for controlling an amount of fuel injection into a fuel injection port of an intake passage in an internal combustion engine, the fuel injection control apparatus including an exhaust air-fuel ratio sensor configured to detect an exhaust air-fuel ratio, an exhaust temperature sensor configured to detect an exhaust temperature, an intake air flow meter configured to detect an intake air amount in the intake passage, and a controller configured to estimate a wall flow amount of the fuel injection port based on the fuel injection amount, the exhaust air-fuel ratio, and the intake air amount, estimate a catalyst bed temperature of a catalyst provided in an exhaust passage based on the exhaust air-fuel ratio and the exhaust temperature and to correct the estimated catalyst bed temperature in accordance with the wall flow amount, and control the fuel injection amount based on the catalyst bed temperature.

Abstract: A fuel injection control apparatus for controlling an amount of fuel injection into a fuel injection port of an intake passage in an internal combustion engine, the fuel injection control apparatus including an exhaust air-fuel ratio sensor configured to detect an exhaust air-fuel ratio, an exhaust temperature sensor configured to detect an exhaust temperature, an intake air flow meter configured to detect an intake air amount in the intake passage, and a controller configured to estimate a wall flow amount of the fuel injection port based on the fuel injection amount, the exhaust air-fuel ratio, and the intake air amount, estimate a catalyst bed temperature of a catalyst provided in an exhaust passage based on the exhaust air-fuel ratio and the exhaust temperature and to correct the estimated catalyst bed temperature in accordance with the wall flow amount, and control the fuel injection amount based on the catalyst bed temperature.

Abstract: An intake air flow rate detection device for an internal combustion engine (100), including a sensor (61, 63) that detects an operating condition of the internal combustion engine (100), an air flow meter (21) that disposed in the intake passage (20) upstream of the supercharging device (41), and a programmable controller (60) programmed to calculate a measured intake air flow rate from a detection value of the air flow meter (21), calculate a calculated intake air flow rate from the operating condition of the internal combustion engine (100), and employ either the measured intake air flow rate or the calculated intake air flow rate as an intake air flow rate of the intake passage (20) on the basis of an air flow rate of air that is circulated to the intake passage (20) between the air flow meter (21) and the supercharging device (41) through the bypass passage (51).

Abstract: An intake air flow rate detection device for an internal combustion engine (100), including a sensor (61, 63) that detects an operating condition of the internal combustion engine (100), an air flow meter (21) that disposed in the intake passage (20) upstream of the supercharging device (41), and a programmable controller (60) programmed to calculate a measured intake air flow rate from a detection value of the air flow meter (21), calculate a calculated intake air flow rate from the operating condition of the internal combustion engine (100), and employ either the measured intake air flow rate or the calculated intake air flow rate as an intake air flow rate of the intake passage (20) on the basis of an air flow rate of air that is circulated to the intake passage (20) between the air flow meter (21) and the supercharging device (41) through the bypass passage (51).

Abstract: In an engine fuel supply method, a first fuel pressure difference between a fuel injection amount computation timing and a first fuel injection timing and a second fuel pressure difference between the fuel injection amount computation timing and a second fuel injection timing are estimated at the fuel injection amount computation timing based on a control state of a fuel pneumatic transportation amount of a high-pressure fuel pump. The first fuel injection amount is corrected based on the first fuel pressure difference and the second fuel injection amount is corrected based on the second fuel pressure difference. A fuel injection valve is selectively controlled to supply the high-pressure fuel directly into a cylinder of the engine at the first fuel injection timing with the corrected first fuel injection amount and at the second fuel injection timing with the corrected second fuel injection amount.

Abstract: In an engine fuel supply method, a first fuel pressure difference between a fuel injection amount computation timing and a first fuel injection timing and a second fuel pressure difference between the fuel injection amount computation timing and a second fuel injection timing are estimated at the fuel injection amount computation timing based on a control state of a fuel pneumatic transportation amount of a high-pressure fuel pump. The first fuel injection amount is corrected based on the first fuel pressure difference and the second fuel injection amount is corrected based on the second fuel pressure difference. A fuel injection valve is selectively controlled to supply the high-pressure fuel directly into a cylinder of the engine at the first fuel injection timing with the corrected first fuel injection amount and at the second fuel injection timing with the corrected second fuel injection amount.

Abstract: A fuel control method and system is provided for delivering fuel to an engine that employs an engine controller that is configured to the fuel injection quantity delivered to the engine. The engine controller is configured to: calculate a fuel injection quantity based on at least one operating condition of an engine; calculate an estimated fuel pressure value of the high pressure fuel that will be acting on a fuel injection valve when the prescribed fuel injection timing is reached at a prescribed calculation time occurring before the prescribed fuel injection timing; correct the fuel injection quantity that was previously calculated to a corrected fuel injection quantity based on the estimated fuel pressure value that will exist at the prescribed fuel injection timing; and open the fuel injection valve at the prescribed fuel injection timing to discharge a quantity of fuel equal to the corrected fuel injection quantity.

Abstract: The electric power steering apparatus includes a brushless motor as an electric motor. The motor has a rotor and a stator 34. The stator 34 includes: a back core BY; a plurality of teeth TS disposed along the circumference of the back core protruding from the back core BY toward its radial center and forming slots SL therebetween; and an exciting coil 38 wound around each of the teeth TS. Each of the slots SL is filled with a resin material. The back core BY is partially press-fitted into a yoke 21 so that the outer surface of the back core BY comes partially into contact with the inner surface of the yoke 21 along their circumferences.

Abstract: A fuel control method and system is provided for delivering fuel to an engine that employs an engine controller that is configured to the fuel injection quantity delivered to the engine. The engine controller is configured to: calculate a fuel injection quantity based on at least one operating condition of an engine; calculate an estimated fuel pressure value of the high pressure fuel that will be acting on a fuel injection valve when the prescribed fuel injection timing is reached at a prescribed calculation time occurring before the prescribed fuel injection timing; correct the fuel injection quantity that was previously calculated to a corrected fuel injection quantity based on the estimated fuel pressure value that will exist at the prescribed fuel injection timing; and open the fuel injection valve at the prescribed fuel injection timing to discharge a quantity of fuel equal to the corrected fuel injection quantity.

Abstract: Fuel to be supplied to fuel injectors (31A-31D) of an internal combustion engine is pressurized using a plunger pump (14) which operates in accordance with the rotation of the internal combustion engine. Each of the injectors (31A-31D) injects the supplied fuel into each of a plurality of cylinders at a predetermined crank angle. At a predetermined calculation timing which is prior to a fuel injection timing of each fuel injector (31A-31D), an engine controller (41) predicts a fuel pressure (Pest) at the fuel injection timing with a high degree of precision (S15). When the predicted fuel pressure (Pest) reaches a predetermined injection permission pressure, the fuel injector (31A-31D) is controlled to execute fuel injection (S17, S23), and thus delays in a fuel injection start timing during cranking are prevented.

Abstract: The electric power steering apparatus includes a brushless motor as an electric motor. The motor has a rotor and a stator 34. The stator 34 includes: a back core BY; a plurality of teeth TS disposed along the circumference of the back core protruding from the back core BY toward its radial center and forming slots SL therebetween; and an exciting coil 38 wound around each of the teeth TS. Each of the slots SL is filled with a resin material. The back core BY is partially press-fitted into a yoke 21 so that the outer surface of the back core BY comes partially into contact with the inner surface of the yoke 21 along their circumferences.

Abstract: Disclosed is a turntable apparatus which comprises a plurality of magnets provided on the inner surface of the turntable so as to be disposed in a state alternately opposite in polarity and a plurality of coils provided on a stationary substrate disposed to face said turntable, in a manner that the disposition of said plurality of coils is in corresponding relation to the disposition of said plurality of magnets, whereby said turntable is rotated by the electromagnetic force between said coils and magnets.There is provided on said stationary substrate position detecting means for detecting the electromagnetic position of the magnets relative to the coils. The output signals from said position detecting means vary in level with a magnetic field variation due to the rotation of the turntable. There is provided means for controlling supply of a DC current to each coil upon receipt of an output signal from said position detecting means thereby to cause a rotating magnetic field to be produced in the coils.