摘要:
According to the present invention, in a heating apparatus (1) having a viscous heater (9) using viscous fluid for heating cooling water, when an engine rotational speed is lower than a set rotational speed relative to a temperature of viscous fluid, a viscous clutch (7) is turned on to transmit a rotational driving force of the engine to a rotor (53) of the viscous heater. In this way, a shearing force is applied to the viscous fluid in the heat-generating chamber (50), and the circulating cooling water is heated by generated heat of the viscous fluid to improve the heating capacity. When the engine rotational speed is higher than the set rotational speed relative to a temperature of viscous fluid, the viscous clutch is not turned on. Therefore, the rotational driving force of the engine is not transmitted to the rotor of the viscous heater, so that the shearing force is not applied to the viscous fluid to prevent the oil temperature of the viscous fluid from increasing excessively higher than 200 °C.
摘要:
According to the present invention, when an air-conditioning clutch (27) of a compressor is set on, even if an improvement of a heating capacity by a viscous heater (4) is required, a viscous clutch (7) is turned off not to transmit a rotational driving force of an engine (E) to a rotor (53) of the viscous heater, and further the rotational driving force of the engine is transmitted to the compressor. In this way, a torque applied to the engine E and a V-belt (6) can be reduced, so that a fuel consumption ratio of the engine lowers and a fuel economical performance improves. Further, because an operation of the compressor is intermitted, it is possible to remove a fog of a front windshield, so that a safety of the vehicle travelling can be prevented from being deteriorated.
摘要:
A viscous fluid heat generator includes: a shear chamber (110) in which viscous fluid (155) is contained and heat is generated by shearing the viscous fluid with a rotor (111) rotating therein; and a space (170) receiving viscous fluid drained from the shear chamber. The heat generator is rotated always as far as an engine rotates because it is driven by the engine without a clutch. The viscous fluid in the shear chamber (110) is drained into the receiving space (170) disposed underneath the shear chamber when the rotor halts or the heat generator is not in operation. The drained viscous fluid is pushed up again into the shear chamber when the rotor is re-started or the heat generator becomes in operation again. The heat generator is re-started easily with a very small starting torque because there is almost no viscous fluid left in the shear chamber and accordingly power to shear the viscous fluid with the rotor is not required. Only a minimal power is consumed by the heat generator when heat is not required to be generated even though the rotor is continuously rotated because the viscous fluid in the shear chamber is drained in this situation.
摘要:
According to the present invention, in a heating apparatus (1) having a viscous heater (9) using viscous fluid for heating cooling water, when an engine rotational speed is lower than a set rotational speed relative to a temperature of viscous fluid, a viscous clutch (7) is turned on to transmit a rotational driving force of the engine to a rotor (53) of the viscous heater. In this way, a shearing force is applied to the viscous fluid in the heat-generating chamber (50), and the circulating cooling water is heated by generated heat of the viscous fluid to improve the heating capacity. When the engine rotational speed is higher than the set rotational speed relative to a temperature of viscous fluid, the viscous clutch is not turned on. Therefore, the rotational driving force of the engine is not transmitted to the rotor of the viscous heater, so that the shearing force is not applied to the viscous fluid to prevent the oil temperature of the viscous fluid from increasing excessively higher than 200 °C.
摘要:
According to the present invention, when a vehicle speed is less than a set value (e.g., 40 km/h) and a throttle opening degree is more than a set value, it is determined that the vehicle is accelerating, and a viscous clutch (6) is turned off. Therefore, a shearing operation of high-viscosity fluid by a rotor (53) of a viscous heater (7) is not performed. In this way, a driving load applied to an engine is reduced, so that an accelerating state suitable for an intention of a driver can be obtained. Further, when the vehicle speed is more than a set value (e.g., 40 km/h) and an engine rotational speed is more than a set value (e.g., 3500 r.p.m.), the viscous clutch (6) is turned off, and a driving load applied to the engine and a V-belt (4) is reduced.
摘要:
According to the present invention, when an air-conditioning clutch (27) of a compressor is set on, even if an improvement of a heating capacity by a viscous heater (4) is required, a viscous clutch (7) is turned off not to transmit a rotational driving force of an engine (E) to a rotor (53) of the viscous heater, and further the rotational driving force of the engine is transmitted to the compressor. In this way, a torque applied to the engine E and a V-belt (6) can be reduced, so that a fuel consumption ratio of the engine lowers and a fuel economical performance improves. Further, because an operation of the compressor is intermitted, it is possible to remove a fog of a front windshield, so that a safety of the vehicle travelling can be prevented from being deteriorated.