A vehicular heat management system includes a heat medium circuit, a heat source portion, and a device. A heat medium cooling an engine circulates in the heat medium circuit. The heat source portion heats the heat medium. The device is configured to function and heat the heat medium when the heat medium flowing into the device is at or above a predetermined temperature. When the engine is being warmed up, heat generated by the heat source portion is supplied to the device in preference to the engine. According to this, since the heat generated by the heat source portion is supplied to the device in preference to the engine when the engine is being warmed up, the engine can be warmed up early.

A vehicular heat management system including a heater for carrying out heating of a heat medium and stop the heating, and a heat exchanger configured to carry out heat exchange between lubricant oil for lubricating a speed change apparatus and the heat medium. A heat medium circulator is provided that is configured to switch the heat medium circulation state between a first circulation state where the heat medium circulates through the heater and the heat exchanger, and a second circulation state where the heat medium circulates through the heater and a heater core. An electronic control unit is also provided.

The present invention relates to a vehicular heating device comprising: a vehicular engine cooling unit for connecting an engine, a water pump, and a radiator on a first cooling water circulating line to cool the engine; and a vehicular indoor space heating unit for connecting the engine, the water pump, and a heater core on a second cooling water circulating line to heat an indoor space of the vehicle, wherein the vehicular heating device comprises a heating means mounted on the second cooling water circulating line to heat cooling water supplied to the heater core. According to the present invention, the heating performance of the cooling water, which is supplied to the heater core during an initial cold start of the vehicle is improved, thereby increasing the indoor heating efficiency of the vehicle during a winter season.

Thermal conditioning of a combustion engine of a vehicle is achieved by means of a fluid circuit or a sub-circuit of the fluid circuit and/or the air flowing into a passenger compartment of the vehicle by means of a heat pump circuit. In at least one operational state of the vehicle, heat is transferred from the fluid circuit or the sub-circuit of the fluid circuit to the heat pump circuit.

A vehicle air conditioner includes a bypass passage configured to cause a coolant to circulate while bypassing a heater core, a switching device set to switch between a first mode in which the coolant flows through the bypass passage and returns to an internal combustion engine while bypassing the heater core and a second mode in which the coolant flows to the heater core, a coolant-temperature sensor that detects a temperature of the coolant at a part through which the coolant flows in both the first mode and the second mode, and a control unit that controls an operation of a blower based on the coolant-temperature control data. Furthermore, first and second calculating portions are configured to calculate the coolant-temperature control data in the first and second modes, respectively. The first calculating portion calculates the coolant-temperature control data based on the temperature of the coolant detected at start-up of the internal combustion engine, and the second calculating portion sets, as the coolant-temperature control data, a temperature lower than the detected temperature of the coolant.

Methods and systems are provided for carrying out on-board diagnostics of a plurality of components of an exhaust heat exchange system. In one example, degradation of one or more of a heat exchanger and a coolant system fluidically coupled to the heat exchanger may be detected based on a first temperature estimated upstream of the heat exchanger, a second temperature sensor estimated downstream of the heat exchanger, a coolant temperature, and a pressure estimated upstream of the heat exchanger. Also, degradation of a diverter valve of the heat exchange system may be detected based on inputs of a position sensor coupled to the diverter valve.

A method for heating the interior of a motor vehicle and a heating system are described. In the method, electrical energy stored or generated in the motor vehicle or electrical energy fed from an external energy source is fed to an electrothermal transducer and is converted there to thermal energy, which is supplied to a carrier medium for the thermal energy. An electrothermal transducer is used, which is temporarily operated at a higher heating power in the heating-up phase than in the subsequent continuous operation. In this way, the motor vehicle interior is heated up significantly quicker than in the known methods.

A heat storing system includes: a heat source that emits heat to a first thermal medium; and a heat storing unit. The heat storing unit includes a heat storing body container housing a heat storing body, and a thermal medium container housing a liquid phase thermal medium. The heat storing body stores or emits heat in accordance with phase change of the heat storing body. The heat storing unit is configured to conduct a cold heat emission mode in which the liquid phase thermal medium and a cooling medium exchange heat in the thermal medium container to evaporate the thermal medium such that cold heat is emitted to the cooling medium.

A system for flameless heating of a fluid includes a hydraulic pump having an input shaft and a rotational power source coupled in torque-transmitting relationship with the input shaft of the hydraulic pump. A hydraulic fluid circuit is in fluid connection with an inlet port and an outlet port of the hydraulic pump. A water heat exchanger having a tank provided with water from a water source and a conduit provided with heated fluid from at least one of the hydraulic pump and the power source is arranged such that heat is transferred from the heated fluid in the conduit to the water in the tank. In one example, at least one valve in the hydraulic fluid circuit selectively limits output flow from the outlet port of the hydraulic pump, thereby providing resistance to pumping motion and heating the hydraulic fluid in the hydraulic pump.

A mobile heating system is disclosed. In one embodiment, the system includes an enclosure defining a plenum that houses a fan and an internal combustion engine. The heating system also includes a hydraulic circuit including a hydraulic pump operably coupled to the internal combustion engine and a first heat exchanger located in the plenum and in fluid communication with the hydraulic pump. The hydraulic circuit also includes a hydraulic motor operably coupled to the fan wherein the hydraulic motor is in fluid communication with and driven by the hydraulic pump. A first valve is disposed between the hydraulic pump and the heat exchanger and is configured to restrict fluid flow and to increase a fluid pumping pressure of the hydraulic pump. A second valve is located upstream of the first valve and is configured to selectively direct hydraulic fluid between the first valve and the hydraulic motor.