Abstract: An oil temperature sensor is externally mounted on a side plate of an oil pan cover that constitutes an external cover for an oil pan apparatus. The oil temperature sensor can output a signal in accordance with the oil temperature prevailing near a thermostat valve apparatus in a second chamber. If the second chamber oil temperature rises immediately after startup of an engine, a CPU judges that an open valve failure has occurred, that is, the thermostat valve apparatus is stuck open. If the oil temperature of the second chamber is not raised when an adequate amount of time has elapsed after the end of a warm-up operation, the CPU judges that a closed valve failure has occurred, that is, the thermostat valve apparatus is stuck closed.

Abstract: A dual-chamber oil pan includes an oil pan provided below an engine block, an oil pan separator that is provided within the oil pan and defines a first chamber communicating with the engine block, and a second chamber provided around the first chamber, and a suction port disposed within the first chamber. The first chamber includes a large-capacity portion including a bottom portion of the oil pan separator, and a small-capacity portion located above and integrally formed with the large-capacity portion.

Abstract: An engine cooling apparatus includes a coolant inlet of a block water jacket formed in a cylinder block, wherein coolant is introduced into the block water jacket through the coolant inlet, a flow-directing plate that is disposed in the block water jacket at a position downstream of the coolant inlet, and that directs the coolant, which has been introduced into the block water jacket through the coolant inlet, toward a head water jacket and a control portion that controls inflow of the coolant from the head water jacket into the block water jacket.

Abstract: The invention provides an engine cooling device capable of suitably promoting the warm-up of an engine. This engine cooling device comprises a cooling circuit and a heat-accumulating passage. The cooling circuit is composed of a radiator passage, a bypass passage, and a flow rate control value for controlling the flow rate of coolant flowing though the bypass passage. The heat-accumulating passage is provided with a heat-accumulating container, and constitutes a heat-accumulating circuit for causing coolant in the heat-accumulating container to circulate via the engine. The cooling device completes the heat-accumulating circuit by connecting the heat-accumulating passage to the cooling circuit to supply the cooling medium in the heat-accumulating container to the body of the engine, opens the flow rate control valve to increase a flow rate of cooling medium flowing though the bypass passage, then disconnects the heat-accumulating passage from the cooling circuit, and closes the flow rate control valve.

Abstract: An internal combustion engine includes a circulation system which circulates a heat medium, a cylinder head part channel which circulates the heat medium into a cylinder head, a cylinder block part channel which circulates the heat medium into a cylinder block, a connecting channel which connects the cylinder head part channel with the cylinder block part channel, a heat supply device that supplies heat accumulated in the regenerator to the internal combustion engine, and restraining device that restrains heat circulation in the connecting channel when heat is supplied by the heat supply device or the internal combustion engine is under cold conditions.

Abstract: In the inventive heat storage tank, the welded portion 15 between the inner tank 11 and the outer tank 12 is not encircled by the housing 20 but opens outward in the radial direction of the tank body port 13, and a gap 3 is provided in the axial direction of the tank body port 13 between the welded portion 15 and a par of the housing 20 opposed to the welded portion 15 in the axial direction of the tank body port 13. Also, there is an elastic member 29 between the periphery 18 of the pipe-inserting hole 17 in the flow-straightening member 16 and the flange 26.

Abstract: Disclosed is a technology capable of efficiently supplying a heater core 12 or a heat accumulation system 15 or an internal combustion engine body 1 with cooling water heated by a cooling water heating mechanism 20 by restraining an unnecessary heat radiation from the cooling water in an internal combustion engine including the heat accumulation system.

Abstract: The internal combustion engine includes an engine preheating apparatus for preheating the internal combustion engine upon or before starting thereof. This internal combustion engine further includes an air-fuel ratio controller for setting an air-fuel ratio of the internal combustion engine that is preheated, to a value higher than that of the internal combustion engine that is not preheated, and/or an ignition-timing controller for retarding an ignition timing of the internal combustion engine that is preheated as compared with the ignition timing of the internal combustion engine that is not preheated.

Abstract: A mounting structure for a heat accumulation tank is provided with an elastic member that wraps around a tank main body, and a heat accumulation tank mounting member which wraps around the outer peripheral surface of the elastic member and holds the tank main body by being tightened in the circumferential direction, and which attaches to a receiving member. The elastic member is a molded part. The length of the elastic member is shorter than length of the circumference of the outer peripheral surface of the tank main body. The heat accumulation tank mounting member includes a shift inhibiting portion which inhibits an upward shift of the tank main body. The outside diameter of the tank main body becomes increasingly wider in the upward direction.

Abstract: The invention provides an engine cooling device capable of suitably promoting the warm-up of an engine. This engine cooling device comprises a cooling circuit and a heat-accumulating passage. The cooling circuit is composed of a radiator passage, a bypass passage, and a flow rate control value for controlling the flow rate of coolant flowing though the bypass passage. The heat-accumulating passage is provided with a heat-accumulating container, and constitutes a heat-accumulating circuit for causing coolant in the heat-accumulating container to circulate via the engine. The cooling device completes the heat-accumulating circuit by connecting the heat-accumulating passage to the cooling circuit to supply the cooling medium in the heat-accumulating container to the body of the engine, opens the flow rate control valve to increase a flow rate of cooling medium flowing though the bypass passage, then disconnects the heat-accumulating passage from the cooling circuit, and closes the flow rate control valve.

Abstract: In the inventive heat storage tank, the welded portion 15 between the inner tank 11 and the outer tank 12 is not encircled by the housing 20 but opens outward in the radial direction of the tank body port 13, and a gap 3 is provided in the axial direction of the tank body port 13 between the welded portion 15 and a par of the housing 20 opposed to the welded portion 15 in the axial direction of the tank body port 13. Also, there is an elastic member 29 between the periphery 18 of the pipe-inserting hole 17 in the flow-straightening member 16 and the flange 26.

Abstract: An internal combustion engine includes a circulation system which circulates a heat medium, a cylinder head part channel which circulates the heat medium into a cylinder head, a cylinder block part channel which circulates the heat medium into a cylinder block, a connecting channel which connects the cylinder head part channel with the cylinder block part channel, a heat supply device that supplies heat accumulated in the regenerator to the internal combustion engine, and restraining device that restrains heat circulation in the connecting channel when heat is supplied by the heat supply device or the internal combustion engine is under cold conditions.

Abstract: The internal combustion engine includes an engine preheating apparatus for preheating the internal combustion engine upon or before starting thereof. This internal combustion engine further includes an air-fuel ratio controller for setting an air-fuel ratio of the internal combustion engine that is preheated, to a value higher than that of the internal combustion engine that is not preheated, and/or an ignition-timing controller for retarding an ignition timing of the internal combustion engine that is preheated as compared with the ignition timing of the internal combustion engine that is not preheated.

Abstract: An internal combustion engine includes a circulation system which circulates a heat medium, a cylinder head part channel which circulates the heat medium into a cylinder head, a cylinder block part channel which circulates the heat medium into a cylinder block, a connecting channel which connects the cylinder head part channel with the cylinder block part channel, a heat supply device that supplies heat accumulated in the regenerator to the internal combustion engine, and restraining device that restrains heat circulation in the connecting channel when heat is supplied by the heat supply device or the internal combustion engine is under cold conditions.

Abstract: The internal combustion engine includes an engine preheating apparatus for preheating the internal combustion engine upon or before starting thereof. This internal combustion engine further includes an air-fuel ratio controller for setting an air-fuel ratio of the internal combustion engine that is preheated, to a value higher than that of the internal combustion engine that is not preheated, and/or an ignition-timing controller for retarding an ignition timing of the internal combustion engine that is preheated as compared with the ignition timing of the internal combustion engine that is not preheated.

Abstract: An electronic control unit (ECU) of an engine system starts a control (preheat) that supplies heat reserving hot water stored in a heat accumulating device to an engine prior to an engine start. The ECU determines a time that continues the preheat on the basis of a cooling water temperature of the engine so as to execute the engine start after a warming-up of the engine is reliably finished. Further, during the execution of the preheat, a lighting lamp is turned on, and that incidence is recognized to a driver. When the preheat is completed, the ECU automatically starts the engine.

Abstract: Disclosed is a technology capable of efficiently supplying a heater core 12 or a heat accumulation system 15 or an internal combustion engine body 1 with cooling water heated by a cooling water heating mechanism 20 by restraining an unnecessary heat radiation from the cooling water in an internal combustion engine including the heat accumulation system.

Abstract: Disclosed is a technology capable of efficiently supplying a heater core 12 or a heat accumulation system 15 or an internal combustion engine body 1 with cooling water heated by a cooling water heating mechanism 20 by restraining an unnecessary heat radiation from the cooling water in an internal combustion engine including the heat accumulation system.

Abstract: According to an internal combustion engine of the invention, release operation of an antitheft device is selected as an event generating by necessity prior to the starting of an engine, and the pre-heat is started based on the generating timing of the selected event. The start timing of the release operation of the antitheft device is high in terms of both necessity as an event generating prior to the starting of the engine and reproducibility of the time length from its start timing to an arbitrary starting timing of the engine. The pre-heat completed state can be secured by starting the pre-heat synchronously with this timing or at a predetermined timing based on the timing, even when the engine is started at an arbitrary timing. Exhaust characteristics and fuel consumption performance can be improved by optimizing the temperature distribution of the engine at starting.

Abstract: A warm-up control device for an internal-combustion engine comprises a heat storage device for storing a heating medium heated during operation of the engine, supplies the heating medium stored in the heat storage device to a drive device (a transmission and the like) prior to the start of the engine or:at the start of the engine, and supplies the heating medium stored in the heat storage device to the drive device while maintaining a condition where the heating medium is circulated in the path excluding the heat storage device and including the drive device after the start of the engine. The warm-up control device supplies the heating medium heat-insulated and stored in the heat storage device during operation of the engine, and sets the ratio between the amount of the heating medium supplied from the heat storage device to the and the amount of the heating medium supplied from the heat storage device to the drive device, on the basis of the temperature of the engine and the temperature of the drive device.