Locomotive engine cooling system drain valve with low voltage sensor
US6050230A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Apr 12, 1999 |
| Grant date | Apr 18, 2000 |
| Priority date | — |
| Expiry date | Apr 12, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/1353
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A locomotive cooling system including a conduit adapted to conduct therethrough a flow of coolant; a power source providing a nominal voltage; and a valve assembly including a valve body defining a drain passage communicable with the conduit, a plunger movable between a closed position in which the conduit and the drain passage are separated and an open position in which the conduit and the drain passage are in fluid communication. A control assembly moves the plunger between the closed position and the open position. The control assembly, including a temperature sensor for detecting the coolant temperature, and connected to the power source. The control assembly opening the valve assembly when the system is either at a first threshold coolant temperature when the power source voltage is nominal or a second threshold coolant temperature when the power source voltage is low.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.