Abstract: During the execution of the combustion stopping process for continuing the combustion of the remaining cylinders while the combustion of some of the plurality of cylinders provided in the engine is stopped, the first vibration damping process for generating the vibration damping torque in the first rotary electric machine M1 and the second vibration damping process for generating the vibration damping torque in the second rotary electric machine M2 are executed.

Abstract: A cooler apparatus includes: a coolant passageway; a water pump that circulates coolant in the coolant passageway; a thermostat that includes a heater that heats a temperature sensitive portion; and a controller. The controller is configured to drive the water pump and cause electric current to flow through the heater at a first energization amount when an operation in which the coolant is injected into the coolant passageway is started. The controller is also configured to stop electric current to flow through the heater if the water pump races when the electric current flows through the heater at the first energization amount.

Abstract: An electronic control unit estimates the amount of sulfur accumulated in a filter for purifying PM and NOx based on the operating state of an engine. When an estimated value is equal to or greater than a predetermined determination value, a first regeneration procedure is executed, in which sulfur is released from the filter by raising the temperature of the filter up to a first predetermined temperature and lowering the exhaust air-fuel ratio. When predetermined conditions are met the second regeneration procedure is executed separately from the first regeneration procedure. In the second regeneration procedure, sulfur is completely released from the filter by raising the temperature of the filter up to a temperature higher than the first temperature and lowering the exhaust air-fuel ratio. The estimated value is reset upon completion of the second regeneration procedure.

Abstract: A cooler apparatus includes: a coolant passageway; a water pump that circulates coolant in the coolant passageway; a thermostat that includes a heater that heats a temperature sensitive portion; and a controller. The controller is configured to drive the water pump and cause electric current to flow through the heater at a first energization amount when an operation in which the coolant is injected into the coolant passageway is started. The controller is also configured to stop electric current to flow through the heater if the water pump races when the electric current flows through the heater at the first energization amount.

Abstract: In an exhaust gas purification device for an internal combustion engine, unburned fuel components are not supplied to a catalyst to make the atmosphere around the catalyst lean during a first lean period, unburned fuel components are supplied to the catalyst to make the atmosphere around the catalyst rich during a rich period, and the supply of unburned fuel components to the catalyst is again stopped during a second lean period. The first lean period, the rich period, and the second lean period form a cycle. If the actual amount of unburned fuel components added to the catalyst is below a required addition amount when a cycle ends, the duration of the first lean period in a subsequent cycle is reduced.

Abstract: In an exhaust gas purification device for an internal combustion engine, unburned fuel components are not supplied to a catalyst to make the atmosphere around the catalyst lean during a first lean period, unburned fuel components are supplied to the catalyst to make the atmosphere around the catalyst rich during a rich period, and the supply of unburned fuel components to the catalyst is again stopped during a second lean period. The first lean period, the rich period, and the second lean period form a cycle. If the actual amount of unburned fuel components added to the catalyst is below a required addition amount when a cycle ends, the duration of the first lean period in a subsequent cycle is reduced.

Abstract: An electronic control unit 6 estimates the amount of sulfur accumulated in a filter 35 for purifying PM and NOx based on the operating state of an engine. On condition that an estimated value Sx is equal to or greater than a determination value Smax, a first regeneration procedure is executed, in which sulfur is released from the filter 35 by raising the temperature of the filter 35 up to a temperature ? and lowering the exhaust air-fuel ratio is executed. When the number of times N of the execution of the first regeneration procedure after the execution of a second regeneration procedure is a determination number of times A or more, the second regeneration procedure is executed separately from the first regeneration procedure. In the second regeneration procedure, sulfur is completely released from the filter 35 by raising the temperature of the filter 35 up to a temperature ?(>?) and lowering the exhaust air-fuel ratio. The estimated value Sx is reset upon completion of the second regeneration procedure.

Abstract: An air-fuel ratio control apparatus for a multiple cylinder engine, having catalytic converters and air-fuel ratio sensors in an exhaust manifold, comprises exhaust air-fuel ratio variation determining means which determines a variation in exhaust air-fuel ratio between one cylinder and other cylinders in one cylinder group when an exhaust air-fuel ratio on one of the rich side and the lean side with respect to a predetermined value is detected as to the one cylinder twice in succession, an exhaust air-fuel ratio on the other one of the rich side and the lean side from the exhaust air-fuel ratio of the one cylinder, and combustion air-fuel ratio control means which feedback-compensates the quantity of fuel injected into the one cylinder, and feedback-compensated the quantity of fuel injected into the other cylinder in a direction opposite to the direction in which the quantity of fuel injected into the one cylinder is compensated.

Abstract: To permit easy and adequate setting of a gain in an internal combustion engine (hereinafter be called an “engine”) for the surer stabilization of an idle speed, the present invention provides a device for controlling an air volume during an idle operation of the engine. This device is provided with a first estimation unit for estimating a current output torque correlation value corresponding to a present intake-air volume of the engine; a second estimation unit for estimating an output torque correlation value correction amount corresponding to a difference between a current engine speed and a target engine speed of the engine; a third estimation unit for estimating a target output torque correlation value based on the correlation value and the correction amount; and a control unit for controlling an intake-air-volume adjusting system of the engine to achieve an intake-air volume which is equivalent to the target output torque correlation value.

Abstract: A device for periodically estimating the temperature of an exhaust-gas purifying catalyst provided in the exhaust pipe of an internal combustion engine. The device includes first, second, third, and fourth estimation blocks. The first estimation block estimates the temperature of exhaust gases that are discharged from the combustion chamber, as a steady catalytic temperature under a steady operation of the internal combustion engine, based on operating conditions of the internal combustion engine. The second estimation block estimates a representative temperature of the interior wall of the exhaust pipe extending from the internal combustion engine to the catalyst, based on the estimated steady catalytic temperature. The third estimation block estimates a catalyst inflow exhaust-gas temperature that flows in the catalyst, based on the estimated steady catalytic temperature and the estimated representative temperature.

Abstract: An air-fuel ratio control apparatus for a multiple cylinder engine, having catalytic converters and air-fuel ratio sensors in an exhaust manifold, comprises exhaust air-fuel ratio variation determining means which determines a variation in exhaust air-fuel ratio between one cylinder and other cylinders in one cylinder group when an exhaust air-fuel ratio on one of the rich side and the lean side with respect to a predetermined value is detected as to the one cylinder twice in succession, an exhaust air-fuel ratio on the other one of the rich side and the lean side from the exhaust air-fuel ratio of the one cylinder, and combustion air-fuel ratio control means which feedback-compensates the quantity of fuel injected into the one cylinder, and feedback-compensated the quantity of fuel injected into the other cylinder in a direction opposite to the direction in which the quantity of fuel injected into the one cylinder is compensated.

Abstract: To permit easy and adequate setting of a gain in an internal combustion engine (hereinafter be called an “engine”) for the surer stabilization of an idle speed, the present invention provides a device for controlling an air volume during an idle operation of the engine. This device is provided with a first estimation unit for estimating a current output torque correlation value corresponding to a present intake-air volume of the engine; a second estimation unit for estimating an output torque correlation value correction amount corresponding to a difference between a current engine speed and a target engine speed of the engine; a third estimation unit for estimating a target output torque correlation value based on the correlation value and the correction amount; and a control unit for controlling an intake-air-volume adjusting system of the engine to achieve an intake-air volume which is equivalent to the target output torque correlation value.

Abstract: A device for periodically estimating the temperature of an exhaust-gas purifying catalyst provided in the exhaust pipe of an internal combustion engine. The device includes first, second, third, and fourth estimation blocks. The first estimation block estimates the temperature of exhaust gases that are discharged from the combustion chamber, as a steady catalytic temperature under a steady operation of the internal combustion engine, based on operating conditions of the internal combustion engine. The second estimation block estimates a representative temperature of the interior wall of the exhaust pipe extending from the internal combustion engine to the catalyst, based on the estimated steady catalytic temperature. The third estimation block estimates a catalyst inflow exhaust-gas temperature that flows in the catalyst, based on the estimated steady catalytic temperature and the estimated representative temperature.

Abstract: A method for processing a radiographic image to obtain a processed image signal Sproc based on an original image signal Sorg. The method including the steps of: obtaining the original image signal Sorg representing the radiographic image based on radiographic image information transmitted through an object; obtaining an unsharp mask signal Sus corresponding to the original image signal Sorg; and conducting an operation presented by the formula: Sproc=A(Sorg)+B(Sus). In the formula, A(Sorg) is the function which does not include the unsharp mask signal Sus, B(Sus) is the function which does not include the original image signal Sorg.

Abstract: An image recording apparatus of the invention records an image on a recording medium by a scanning means which performs deflective scanning with light intensity-modulated in accordance with a recording signal. On-line image data is recorded by performing the deflective scanning a plurality of times. The recorded image has a larger number of gray levels than the number of modulation levels.

Abstract: An electrophotographically information recording method of recording the external information on recording paper by forming the information as an electrostatic latent image on a charged photosensitive element and then by electrophotographically treating the electrostatic latent image. When the information can be introduced within the predetermined information introduction time, the recording operations is accomplished by the electrophotographic treatment subsequently to the introduction. When the information cannot be wholly introduced within the predetermined information introduction time, the electrophotographically treating operations excepting the formation of the electrostatic latent image on the photosensitive element and the feed of the recording paper are continued, so that these remaining operations of the formation of the electrostatic latent image and the feed of the recording paper are started immediately after the introduction of the information.