A method for determining a heating load of a hybrid electric vehicle includes determining an SOC of a high-voltage battery through a controller, determining whether or not there is a heating request, based on a travel pattern input, through the controller when the SOC of the high-voltage battery is normal, calculating a required heating load according to the travel pattern input when there is the heating request, calculating an environmental condition according to an environment of the vehicle when there is the heating request, calculating a final heating load value through a combination of the calculated required heating load and the environmental condition of the vehicle, and adjusting a basic request engine torque according to the travel pattern input, taking into consideration the calculated final heating load value, and controlling driving of an engine based on the adjusted basic request engine torque.

Provided is an air-conditioning device for a vehicle, including: a cooling device configured to cool air passing through a duct; a heater core, which is arranged in the duct on a downstream side of airflow with respect to the cooling device, and is configured to use an engine coolant as a heat source to heat the air; a water valve provided in a coolant circulation system on an upstream side of the heater core; and a controller configured to control those components, in which the controller is configured to decrease an opening amount of the water valve in a predetermined cooling mode. The control is configured to, when the opening amount of the water valve is decreased, decrease a rotational speed of a compressor of the cooling device, and increase a target evaporator temperature of an evaporator of the cooling device, thereby decreasing cooling performance of the cooling device.

Provided is an air-conditioning device for a vehicle, including: a cooling device configured to cool air passing through a duct; a heater core, which is arranged in the duct on a downstream side of airflow with respect to the cooling device, and is configured to use an engine coolant as a heat source to heat the air; a water valve provided in a coolant circulation system on an upstream side of the heater core; and a controller configured to control those components, in which the controller is configured to decrease an opening amount of the water valve in a predetermined cooling mode. The control is configured to, when the opening amount of the water valve is decreased, decrease a rotational speed of a compressor of the cooling device, and increase a target evaporator temperature of an evaporator of the cooling device, thereby decreasing cooling performance of the cooling device.

A combustion air blower, especially side channel blower, for a fuel-operated vehicle heater, includes a blower housing (38). An air flow space (44), through which combustion air being fed can flow, is formed in the blower housing (38). Air flowing over an inlet area (55) into the air flow space (44) flows to a feed area enclosing a feed wheel (48). At least one hydrocarbon storage element (70, 88) is formed in the air flow space (44), for storing gaseous hydrocarbon present in the air flow space (44).

A combustion air blower, especially side channel blower, for a fuel-operated vehicle heater, includes a blower housing (38). An air flow space (44), through which combustion air being fed can flow, is formed in the blower housing (38). Air flowing over an inlet area (55) into the air flow space (44) flows to a feed area enclosing a feed wheel (48). At least one hydrocarbon storage element (70, 88) is formed in the air flow space (44), for storing gaseous hydrocarbon present in the air flow space (44).

An opening and closing device includes a casing that defines an air passage, a slide door that includes a door main body slidable to open or close the air passage, and a sliding gear that is disposed on one side of the door main body in its width direction and includes first teeth in a sliding direction, and a drive gear that is rotatable around its axis line extending in the width direction and that includes second teeth in a circumferential direction around the axis line such that the first teeth and the second teeth are arranged in engagement with each other. When the drive gear rotates, a driving force is transmitted from the drive gear to the slide door through the sliding gear to slide the slide door. The door main body is restricted from shifting in the width direction due to the rotation of the drive gear.

An opening and closing device includes a casing that defines an air passage, a slide door that includes a door main body slidable to open or close the air passage, and a sliding gear that is disposed on one side of the door main body in its width direction and includes first teeth in a sliding direction, and a drive gear that is rotatable around its axis line extending in the width direction and that includes second teeth in a circumferential direction around the axis line such that the first teeth and the second teeth are arranged in engagement with each other. When the drive gear rotates, a driving force is transmitted from the drive gear to the slide door through the sliding gear to slide the slide door. The door main body is restricted from shifting in the width direction due to the rotation of the drive gear.

An air conditioning damper includes a damper main body provided in a casing and closing a flow path formed in the casing by a distal end portion abutting against the inner surface of the casing. The air conditioning damper closes or opens the flow path by pivoting. The air conditioning damper has a cover portion provided on front surface sides or back surface sides of a plurality of protruding portions and extending in the width direction of the damper main body beyond a side surface of the protruding portion.

An air conditioning damper includes a damper main body provided in a casing and closing a flow path formed in the casing by a distal end portion abutting against the inner surface of the casing. The air conditioning damper closes or opens the flow path by pivoting. The air conditioning damper has a cover portion provided on front surface sides or back surface sides of a plurality of protruding portions and extending in the width direction of the damper main body beyond a side surface of the protruding portion.

An air conditioner for a vehicle which can reduce ventilation resistance and secure a sufficient cross-sectional area of an air outlet to prevent deterioration in air volume. The air conditioner includes: an air-conditioning case having an air passageway formed therein and a plurality of air outlets formed at an exit thereof, and at least one heat exchanger disposed in the air passageway of the air-conditioning case to exchange heat with air passing through the air passageway, wherein the air outlet includes a center vent for discharging air-conditioned wind toward the center of a vehicle width and a side vent for discharging the air-conditioned wind toward the side of the vehicle width, and one between the center vent and the side vent is arranged in an upper side of the air-conditioning case, and the other is arranged in one side of the air-conditioning case in a back-and-forth direction of the vehicle.