Abstract:
PROBLEM TO BE SOLVED: To quickly warm and store a heat exchange medium to warm and cool an inernal combustion engine, and to suitably control the temperature of the heat exchange medium. SOLUTION: At the time of starting the engine, the engine is warmed by supplying warm water stored in a heat storage tank into a cooling water passage (S100 to S120). Then, when cooling water warmed by heat exchanging with the engine is collected into the heat storage tank, a fan mounted in a radiator of an engine cooling system is indicated to drive with the necessary and minimum effort (S160). As a result, cooling water can be quickly warmed and stored in the heat storage tank, and the temperature of cooling water can be suitably controlled during of collecting cooling water into the heat storage tank. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To more properly cope with the lowering of power outputted from an internal combustion engine. SOLUTION: When an engine is operated and an engine demand power Pe* becomes lower than an engine stop determination value Pstp, the operation of the engine is stopped (S330 to S370). When the operation of the engine is stopped and the engine demand power Pe* becomes higher than an engine start determination value Pstrt, the engine is started (S250 to S310). Since the engine stop determination value Pstp and the engine start determination value Pstrt are set to smaller values than those at a normal time when using regular fuel, the engine easily becomes an operated state than the normal time. When using the regular fuel, a corrected rotational number ΔN is added to a target rotational number Ne* of the engine (S260 and S270). As a result, lowering of power outputted from the internal combustion engine can be more properly coped. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a fuel injection control device capable of suppressing the deterioration of exhaust emission resulting from the response delay of an exhaust sensor when automatic start or the return of fuel cut is performed in the fuel injection control device for setting a fuel injection amount so that an actual air-fuel ratio in starting an engine or returning the fuel cut becomes richer than a theoretical air-fuel ratio in the internal combustion engine in which the automatic stop and automatic start of the engine are performed and in the internal combustion engine in which the fuel cut and the return of the fuel cut are performed. SOLUTION: This fuel injection control device is formed to perform air-fuel ratio feedback control when the detection signal of the exhaust sensor after automatic stop is determined to be rich. Also, the detection signal of the exhaust sensor after automatic start is determined not to be rich in the device, it is determined whether a specified time TA is passed from the automatic start or not. When the specified time TA is not passed, the start of the air-fuel ratio feedback control is prohibited and when the specified time TA is passed, the air-fuel ratio feedback control is performed. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a warming-up apparatus of an internal combustion engine for appropriately avoiding a decrease in the recovery efficiency of a heating medium. SOLUTION: The warming-up apparatus of the internal combustion engine is applied to a hybrid vehicle for mounting a navigation system NS, thus supplying cooling water stored in a heat-storing tank 21 to the internal combustion engine 11 via an electric water pump 22, and hence promoting the warming-up of the internal combustion engine 11. When the current location of the hybrid vehicle in the navigation system NS arrives around a destination set to the navigation system NS, the cooling water that absorbs heat in the internal combustion engine 11 and becomes a high temperature is recovered into a heat-storing tank 21 through the electric water pump 22. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an engine accessory driving device of an internal combustion engine for enhancing the responsiveness of the internal combustion engine to the load request while driving an engine accessory. SOLUTION: One end of a drive shaft 25 of a compressor 24 is connected to one end of a connection shaft 27 of a motor 26, and a compressor pulley 22 is attached to the other end of the connection shaft 27. A belt 21 is stretched between the compressor pulley 22 and a crank pulley 20 of an engine 11. A one-way clutch mechanism is provided on the compressor pulley 22. When acceleration is requested to the engine 11, the rotational speed of a retainer to be rotated by the motor 26 is set to be higher than the rotational speed of a rotary yoke to be rotated by the engine 11 in the one-way clutch mechanism. The rotary yoke is idled with reference to the retainer, and the load to be transmitted from the compressor 24 to the engine 11 is cut off thereby. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a cooling device of an internal combustion engine in which measures are taken to deal with the extension of a warm-up period owing to a failure of the cooling device, etc. SOLUTION: By a warm-up control means 50, a three-way directional control valve 30 is controlled before the operation start of an engine 10, a cooling water passage 28 is connected to a cooling water passage 32, cooling water for warm-up is circulated between the engine 10 and a heat accumulation tank 36 to warm-up the engine 10, and the engine 10 is permitted to start an operation when the inside temperature of the engine measured by an engine temperature sensor 54 and the temperature of cooling water for warm-up measured by a water temperature sensor 34 do not reach a predetermined temperature in a predetermined time. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To establish appropriate idle speed control even if a target idle speed is changed from a reference idle speed, by reducing a difference between a controlled intake air quantity and a required flow rate resulting from a change in flow rate characteristics of intake adjusting means due to deposit adhesion. SOLUTION: An ECU 40 adjusts an idle opening angle of a throttle valve 36 arranged in an intake passage 26a of an engine 11 to feedback-control an idle speed of the engine 11 to a given speed. The ECU 40 adds an ISC flow rate to which an intake air quantity corresponding to a speed change between a target idle speed and a reference idle speed is corrected on the basis of an ISC learning value, and the ISC learning value to compute an ISC flow rate for producing the target idle speed. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To check whether or not an intake air pressure compression degree change means is set so as to increase the intake air to a high-pressure compression degree during the cranking of the engine in the internal combustion engine having the intake air pressure compression degree change means capable of changing an intake air compression degree in a cylinder at the time of starting of the engine. SOLUTION: Whether the intake air compression degree is set to a high value or not is judged by the anti-cranking reaction of the internal combustion engine to a cranking by an electric motor. In the anti-cranking reaction, a variation in crank shaft speed in an increasing process by cranking or a magnitude of a cylinder pressure relative to the crank shaft speed are detected.
Abstract:
PROBLEM TO BE SOLVED: To smoothly start an engine, and to prevent the deterioration of exhaust air aspect in a vehicle which is loaded with an internal-combustion engine equipped with a direct injection injector and an intake path injection injector and which controls engine intermittent operation. SOLUTION: When the operation of a vehicle ends, the fuel pressure of a high pressure delivery pipe 130 and a low pressure delivery pipe 160 is decreased due to the operation (release) of an electromagnetic relief valve 210 and the operation stop of a low pressure fuel pump 180, so that it is possible to prevent the deterioration of exhaust air aspect when an engine starts the next time due to fuel leakage by the deterioration of oil density in each injector 110 and 120 during the operation stop period. On the other hand, when the engine temporarily stops due to engine intermittent operation control, a low pressure fuel pump 180 is stopped, and the operation (release) of the electromagnetic relief valve 210 is inhibited. When the engine restarts after its temporary stop, the engine is made to quickly start by fuel injection in a high pressure delivery pipe 130 whose fuel pressure is secured, considering the rise of the temperature of the engine. COPYRIGHT: (C)2010,JPO&INPIT