Abstract: High temperature (HT) and low temperature (LT) cooling water, the LT cooling water being at a lower temperature than the HT cooling water, circulate in HT and LT cooling water flows in respective channels. A controller controls to set the temperature of the LT cooling water lower in a case where an operating point of an engine lies in a particular region in an operational region of the engine, the particular region including a region in which the load is high and the engine speed is low, than in a case where the operating point lies in an operational region other than the particular region. Furthermore, the controller narrows the particular region in a direction toward higher loads in a case where the temperature of the HT cooling water is lower than a predetermined temperature.

Abstract: A supercharged internal combustion engine according to the present invention includes a compressor 16a that supercharges intake air; an EGR passage 22 that connects an intake passage 12 at the upstream side of the compressor 16a and an exhaust passage 14; an EGR valve 26 that is provided in the EGR passage 22 and regulates the flow rate of EGR gas that flows through the EGR passage 22 by opening and closing the EGR passage 22; and a heat insulator 30 that is provided on a surface of the EGR valve 26 that is exposed to the EGR passage 22 which is located at the upstream side in the EGR gas flow with respect to a seal portion by a seal surface 26a1 and a valve seat 28a when the EGR valve 26 is in the fully closed position.

Abstract: A cooling device for an internal combustion engine includes a HT cooling system, a LT cooling system, and an electronic control unit. The electronic control unit is configured to, if a HT temperature has reached a HT determination value, control an operation state of the HT cooling system to start cooling for maintaining the HT temperature at a HT target temperature. The electronic control unit is configured to, if a LT temperature being a temperature of a LT cooling medium has reached a LT determination value, start a LT cooling control for maintaining the LT temperature at a LT target temperature under a specific condition where an early warm-up of the internal combustion engine is not required. The electronic control unit is configured to start the LT cooling control if the HT temperature has reached the HT determination value under a condition where the early warm-up is required.

Abstract: An HT cooling system cools at least a cylinder block with HT cooling water. An LT cooling system cools an intake port with LT cooling water that is at a lower temperature than the HT cooling water. A controller performs an ignition retard control that involves correcting the ignition timing based on the result of detection of a knock by a knock sensor, and a cooling enhancement control that involves enhancing cooling by the LT cooling system in the case where a knock is detected compared with the case where no knock is detected. The way of cooling by the HT cooling system is unchanged whether a knock is detected.

Abstract: High temperature (HT) and low temperature (LT) cooling water, the LT cooling water being at a lower temperature than the HT cooling water, circulate in HT and LT cooling water flows in respective channels. A controller controls to set the temperature of the LT cooling water lower in a case where an operating point of an engine lies in a particular region in an operational region of the engine, the particular region including a region in which the load is high and the engine speed is low, than in a case where the operating point lies in an operational region other than the particular region. Furthermore, the controller narrows the particular region in a direction toward higher loads in a case where the temperature of the HT cooling water is lower than a predetermined temperature.

Abstract: A cooling water channel core that is used for casting of the cylinder head includes a core body for obtaining a channel that passes through the periphery of a plurality of intake valve insertion holes, and a core print that is integrally formed with the core body at a location that is between an adjacent two combustion chambers of the core body and that comes in contact with an outer casting mold in a casting mold manufacturing step. When the cooling water channel core is arranged inside the outer casting mold and casting is performed, a cylinder head is manufactured that has an opening portion that opens in an outer face from the cooling water channel. The opening portion is sealed by a sealing plug after being utilized for sand extraction and inspection.

Abstract: A cylinder block including two different systems of cooling water channels. The cooling water at a relatively low temperature is made to flow through a first cooling water channel, while the cooling water at a relatively high temperature is made to flow through a second cooling water channel. The first cooling water channel includes an exhaust-side water jacket that is located on an exhaust side with respect to a plurality of cylinders juxtaposed in a longitudinal direction of the cylinder block and is provided in the longitudinal direction along the plurality of cylinders. The second cooling water channel includes an intake-side water jacket that is located on an intake side with respect to the plurality of cylinders and is provided in the longitudinal direction along the plurality of cylinders.

Abstract: A ringed coolant water passage 16 formed to surround a plurality of cylinders #1-#4 is provided. Two partitioning members having a larger thermal expansion coefficient as compared to that of a cylinder block 10, and separating the ringed coolant water passage 16 into first passage 22 and second passage 24 is provided. The first passage 22 exists mainly at one side of a longitudinal bore center plane which extends along the longitudinal direction of the cylinder block 10 while the second passage 24 exists mainly at the other side. An inlet which communicates with the first passage and an outlet which communicates with the second passage are provided. A cylinder head including a coolant water passage which opens to both of the first passage 22 and the second passage 24 is attached to the cylinder block 10.

Abstract: An electrically driven vehicle equipped with a battery usable for running in which a power generation unit of engine driven type that charges the battery is detachably mounted on a vehicle body, includes including a first connection part that brings a high-voltage system in which the battery and the power generation unit are electrically connected together into a connected state in a state in which the power generation unit is mounted in a mounting position and brings the high-voltage system into a disconnected state in a state in which the power generation unit is dismounted from the mounting position, whereby the first connection part switches a connection state of the high-voltage system in accordance with installation or removal of the power generation unit. The first connection part includes a connector on the vehicle side and a connector on the power generation unit side.

Abstract: An electric drive vehicle includes a vehicle main body 10, a battery 12, a power generating unit 11 that charges to the battery 12, an operating condition setting switch 40 capable of setting an operating condition of the power generating unit 11, a power-generating-unit side ECU 113 that operates the power generating unit 11 on the basis of the operating condition, a navigation system 30 that acquires a vehicle traveling condition, and a vehicle-side ECU 50 that estimates the amount of charge consumed in the battery 12 during traveling under the vehicle traveling condition. The vehicle-side ECU 50 turns on an alarm lump 46 when an estimated time necessary for charging the battery to make up the amount of charge estimated is longer than a desired time it takes to charge the battery to make up the amount of charge estimated.

Abstract: In an electrically driven vehicle equipped with a battery usable for running, a power generation unit of engine driven type that charges the battery is detachably mounted on the vehicle including a case where at least an engine of the power generation unit is detachably mounted, and the vehicle includes first stop means for bringing the power generation unit in a stopped state when the power generation unit is installed in or removed from the vehicle, and a generation stop switch for making an operation request to the power generation unit. More specifically, the first stop means stops an operation request signal to the power generation unit through low-voltage system wires when the generation stop switch is ON (no operation request is made).

Abstract: An electrically powered vehicle includes a vehicle body, a battery that is mounted in the vehicle body and is usable for running, and an engine driven type of generator unit that is detachably mounted in the vehicle body and charges the battery. In the electrically powered vehicle, at least some of exhaust system assembly components that form an exhaust system of an engine of the generator unit are provided in the vehicle body. Specifically, the electrically powered vehicle is configured to mount, for example, a catalyst out of the exhaust system assembly components in the vehicle body.

Abstract: An electrically driven vehicle equipped with a battery usable for running in which a power generation unit of engine driven type that charges the battery is detachably mounted on a vehicle body, includes including a first connection part that brings a high-voltage system in which the battery and the power generation unit are electrically connected together into a connected state in a state in which the power generation unit is mounted in a mounting position and brings the high-voltage system into a disconnected state in a state in which the power generation unit is dismounted from the mounting position, whereby the first connection part switches a connection state of the high-voltage system in accordance with installation or removal of the power generation unit. The first connection part includes a connector on the vehicle side and a connector on the power generation unit side.

Abstract: A ringed coolant water passage 16 formed to surround a plurality of cylinders #1-#4 is provided. Two partitioning members having a larger thermal expansion coefficient as compared to that of a cylinder block 10, and separating the ringed coolant water passage 16 into first passage 22 and second passage 24 is provided. The first passage 22 exists mainly at one side of a longitudinal bore center plane which extends along the longitudinal direction of the cylinder block 10 while the second passage 24 exists mainly at the other side. An inlet which communicates with the first passage and an outlet which communicates with the second passage are provided. A cylinder head including a coolant water passage which opens to both of the first passage 22 and the second passage 24 is attached to the cylinder block 10.

Abstract: In an electrically driven vehicle equipped with a battery usable for running, a power generation unit of engine driven type that charges the battery is detachably mounted on the vehicle including a case where at least an engine of the power generation unit is detachably mounted, and the vehicle includes first stop means for bringing the power generation unit in a stopped state when the power generation unit is installed in or removed from the vehicle, and a generation stop switch for making an operation request to the power generation unit. More specifically, the first stop means stops an operation request signal to the power generation unit through low-voltage system wires when the generation stop switch is ON (no operation request is made).

Abstract: In an electric drive vehicle equipped with a power generating unit that is detachable, the power generating unit includes a power-generating-unit side ECU capable of controlling an operation of the power generating unit solely, and the electric drive vehicle includes a vehicle-side ECU capable of managing a state of charge of a battery used for running, and in a case where the power generating unit is installed in the electric drive vehicle and power is supplied to the battery from the power generating unit, an instruction by the vehicle-side ECU is given priority to an instruction by the power-generating-unit side ECU, and the vehicle-side ECU controls the operation of the power generating unit.

Abstract: In an electric drive vehicle equipped with a power generating unit that is detachable, the power generating unit includes a power-generating-unit side ECU capable of controlling an operation of the power generating unit solely, and the electric drive vehicle includes a vehicle-side ECU capable of managing a state of charge of a battery used for running, and in a case where the power generating unit is installed in the electric drive vehicle and power is supplied to the battery from the power generating unit, an instruction by the vehicle-side ECU is given priority to an instruction by the power-generating-unit side ECU, and the vehicle-side ECU controls the operation of the power generating unit.

Abstract: An electric drive vehicle includes a vehicle main body 10, a battery 12, a power generating unit 11 that charges to the battery 12, an operating condition setting switch 40 capable of setting an operating condition of the power generating unit 11, a power-generating-unit side ECU 113 that operates the power generating unit 11 on the basis of the operating condition, a navigation system 30 that acquires a vehicle traveling condition, and a vehicle-side ECU 50 that estimates the amount of charge consumed in the battery 12 during traveling under the vehicle traveling condition. The vehicle-side ECU 50 turns on an alarm lump 46 when an estimated time necessary for charging the battery to make up the amount of charge estimated is longer than a desired time it takes to charge the battery to make up the amount of charge estimated.