Heating apparatus for vehicle, having heat-generating unit
US5899183A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1997 |
| Grant date | May 4, 1999 |
| Priority date | — |
| Expiry date | Sep 24, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60H1/00764
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
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 is turned off. Therefore, a shearing operation of high-viscosity fluid by a rotor of a viscous heater 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 is turned off, and a driving load applied to the engine and a V-belt is reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.