Abstract: A vehicle air-conditioning device is provided for controlling a vehicle air-conditioning of a vehicle in accordance with a control method. The air-conditioning compressor is stopped for a first time period after a brake pedal transitions from an operated state to a non-operated state when negative pressure inside a vacuum servo is insufficient relative to a predetermined pressure while an air-conditioning compressor is operating, and The air-conditioning compressor is stopped for a second time period after the acceleration pedal has come to be in a non-operated state when an acceleration pedal is operated before the first time period elapses.

Abstract: A vehicle air-conditioning device is provided for controlling a vehicle air-conditioning of a vehicle in accordance with a control method. A negative pressure, which is generated in an intake passage of the internal combustion engine by a vacuum servo that assists a brake pedal force, is estimated based on an atmospheric pressure and a pressure inside the intake passage. When a predetermined condition is established that includes a state in which the estimated negative pressure inside the vacuum servo is insufficient relative to a predetermined pressure during operation of the air-conditioning compressor, the air-conditioning compressor is stopped during a first time period, the air-conditioning compressor is operated during a second time period regardless of the predetermined condition after the first time period has elapsed, and operation of the air-conditioning compressor is controlled in accordance the states of the predetermined condition being established after the second time period has elapsed.

Abstract: A vehicle air-conditioning device is provided for controlling a vehicle air-conditioning of a vehicle in accordance with a control method. A negative pressure, which is generated in an intake passage of the internal combustion engine by a vacuum servo that assists a brake pedal force, is estimated based on an atmospheric pressure and a pressure inside the intake passage. When a predetermined condition is established that includes a state in which the estimated negative pressure inside the vacuum servo is insufficient relative to a predetermined pressure during operation of the air-conditioning compressor, the air-conditioning compressor is stopped during a first time period, the air-conditioning compressor is operated during a second time period regardless of the predetermined condition after the first time period has elapsed, and operation of the air-conditioning compressor is controlled in accordance the states of the predetermined condition being established after the second time period has elapsed.

Abstract: A vehicle air-conditioning device is provided for controlling a vehicle air-conditioning of a vehicle in accordance with a control method. The air-conditioning compressor is stopped for a first time period after a brake pedal transitions from an operated state to a non-operated state when negative pressure inside a vacuum servo is insufficient relative to a predetermined pressure while an air-conditioning compressor is operating, and The air-conditioning compressor is stopped for a second time period after the acceleration pedal has come to be in a non-operated state when an acceleration pedal is operated before the first time period elapses.

Abstract: During control of an air-conditioning for a vehicle, when a torque to the engine is outputted that satisfies a total value of drive torques of the vehicle and an air-conditioning compressor, a minimum discharge capacity is set when fuel to the engine is cut. An assessment is made as to whether or not the discharge capacity needs to be changed from the minimum discharge capacity in accordance with the state inside the cabin. The discharge capacity is changed from the minimum discharge capacity to an upper limit capacity that is allowed during normal operation upon accessing that the discharge capacity needs to be changed from the minimum discharge capacity. After a predetermined time elapses following the changing of the discharge capacity, the discharge capacity is changed from the upper limit capacity to a discharge capacity that corresponds to the state inside the cabin.

Abstract: A control apparatus for a diesel engine includes a neighboring temperature estimating section which estimates a temperature of a neighborhood of a glow plug that heats an interior of a cylinder upon startup, and a supercharging pressure control section which controls a supercharging pressure in such a way that a rotation fluctuation of the engine does not increase, on the basis of the estimated temperature of the neighborhood of the glow plug.

Abstract: During control of an air-conditioning for a vehicle, when a torque to the engine is outputted that satisfies a total value of drive torques of the vehicle and an air-conditioning compressor, a minimum discharge capacity is set when fuel to the engine is cut. An assessment is made as to whether or not the discharge capacity needs to be changed from the minimum discharge capacity in accordance with the state inside the cabin. The discharge capacity is changed from the minimum discharge capacity to an upper limit capacity that is allowed during normal operation upon accessing that the discharge capacity needs to be changed from the minimum discharge capacity. After a predetermined time elapses following the changing of the discharge capacity, the discharge capacity is changed from the upper limit capacity to a discharge capacity that corresponds to the state inside the cabin.

Abstract: An internal combustion engine of a hybrid drive vehicle includes an exhaust gas purification catalyst in an exhaust passage. An internal combustion engine control device is configured to continuously rotate the internal combustion engine for a predetermined time period after an engine start. The internal combustion engine control device prohibits a fuel-cut within the predetermined time period after the engine start, thereby suppressing the frequent repetition of the start and stop of the internal combustion engine due to an accelerator pedal operation and suppressing oxygen storage in the exhaust gas purification catalyst associated with the fuel-cut. As a result, exhaust gas purification performance at the time of restarting the internal combustion engine is ensured.

Abstract: When an accelerator opening degree becomes zero, a fuel cut-permission vehicle speed is set on the bases of a cooling water temperature. During a delay time, torque reduction has the characteristic of being dependent on cooling water temperature, and in an unwarmed state, a relatively large amount of air is supplied. The fuel cut-permission vehicle speed has the characteristic of taking a high value when an engine is not warmed up and cooling water temperature is low, in accordance with delay time air amount reduction control, which is performed in accordance with cooling water temperature. This reduces any shocks or odd feelings experienced by an occupant.

Abstract: When an accelerator opening degree becomes zero, a fuel cut-permission vehicle speed is set on the bases of a cooling water temperature. During a delay time, torque reduction has the characteristic of being dependent on cooling water temperature, and in an unwarmed state, a relatively large amount of air is supplied. The fuel cut-permission vehicle speed has the characteristic of taking a high value when an engine is not warmed up and cooling water temperature is low, in accordance with delay time air amount reduction control, which is performed in accordance with cooling water temperature. This reduces any shocks or odd feelings experienced by an occupant.

Abstract: A control apparatus for a diesel engine includes a neighboring temperature estimating section which estimates a temperature of a neighborhood of a glow plug that heats an interior of a cylinder upon startup, and a supercharging pressure control section which controls a supercharging pressure in such a way that a rotation fluctuation of the engine does not increase, on the basis of the estimated temperature of the neighborhood of the glow plug.

Abstract: A control apparatus for a diesel engine includes a neighboring temperature estimating section which estimates a temperature of a neighborhood of a glow plug that heats an interior of a cylinder upon startup, and a supercharging pressure control section which controls a supercharging pressure in such a way that a rotation fluctuation of the engine does not increase, on the basis of the estimated temperature of the neighborhood of the glow plug.

Abstract: An internal combustion engine 2 is started by being cranked by an electric motor. An internal combustion engine start control device performs a feedback-control of an intake air amount of the internal combustion engine to a target idle intake air amount, learns a feedback correction amount applied in a feedback control, and performs a learning control using a learnt value in parallel with the feedback control. An engine rotation speed is converged to a target idle rotation speed in an early stage by setting an allowable correction range of a feedback correction amount applied before a start of learning of the intake air amount wider than the allowable correction range of the feedback correction amount applied after the start of the learning of the intake air amount.

Abstract: An internal combustion engine of a hybrid drive vehicle includes an exhaust gas purification catalyst in an exhaust passage. An internal combustion engine control device is configured to continuously rotate the internal combustion engine for a predetermined time period after an engine start. The internal combustion engine control device prohibits a fuel-cut within the predetermined time period after the engine start, thereby suppressing the frequent repetition of the start and stop of the internal combustion engine due to an accelerator pedal operation and suppressing oxygen storage in the exhaust gas purification catalyst associated with the fuel-cut. As a result, exhaust gas purification performance at the time of restarting the internal combustion engine is ensured.

Abstract: A control apparatus for a diesel engine includes a neighboring temperature estimating section which estimates a temperature of a neighborhood of a glow plug that heats an interior of a cylinder upon startup, and a supercharging pressure control section which controls a supercharging pressure in such a way that a rotation fluctuation of the engine does not increase, on the basis of the estimated temperature of the neighborhood of the glow plug.

Abstract: An internal combustion engine 2 is started by being cranked by an electric motor. An internal combustion engine start control device performs a feedback-control of an intake air amount of the internal combustion engine to a target idle intake air amount, learns a feedback correction amount applied in a feedback control, and performs a learning control using a learnt value in parallel with the feedback control. An engine rotation speed is converged to a target idle rotation speed in an early stage by setting an allowable correction range of a feedback correction amount applied before a start of learning of the intake air amount wider than the allowable correction range of the feedback correction amount applied after the start of the learning of the intake air amount.

Abstract: An integrating PM amount ? PM as an integrating value of a PM generating amount after DPF regeneration is read (S1). The integrating PM amount and a first threshold value SL1 set in advance are compared, and the regenerating period of DPF 13 is judged (S2). Further, a differential pressure ?Pdf before and after DPF 13 detected by a differential pressure sensor 16, and a second threshold value SL2 are compared, and the regenerating period of DPF 13 is judged (S5). Regeneration processing of DPF 13 is then performed when the integrating PM amount ? PM attains the first threshold value SL1 or tore, or the differential pressure ?Pdf attains a second threshold value SL2 or more (S7).

Abstract: An integrating PM amount ? PM as an integrating value of a PM generating amount after DPF regeneration is read (S1). The integrating PM amount and a first threshold value SL1 set in advance are compared, and the regenerating period of DPF 13 is judged (S2). Further, a differential pressure ?Pdf before and after DPF 13 detected by a differential pressure sensor 16, and a second threshold value SL2 are compared, and the regenerating period of DPF 13 is judged (S5). Regeneration processing of DPF 13 is then performed when the integrating PM amount ? PM attains the first threshold value SL1 or tore, or the differential pressure ?Pdf attains a second threshold value SL2 or more (S7).