Shut-down apparatus for diesel engines
US4403580A · kind A · utility
Inventor
Key dates
| Filing date | Dec 19, 1980 |
| Grant date | Sep 13, 1983 |
| Priority date | — |
| Expiry date | Dec 19, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S123/11
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The control circuit and apparatus is used and utilized with and by internal combustion engines that employ injector pumps for delivery of fuel to cylinders. Usually this arrangement includes metering and often the engine is a diesel engine. The fuel is delivered at a given flow rate which is in excess of the required flow and this excess is returned through a return conduit to a supply tank. The invention provides for electrically actuating apparatus for effectively terminating the supply of fuel to the injector pump. Five circuit arrangements are depicted, a first arrangement includes a solenoid actuated valve in the supply line and an electrically actuated return flow pump in the return line. A second arrangement has a return flow pump in the delivery line with the return flow pump, when actuated, having a greater flow capability than the transfer pump. A third arrangement employs two electrically actuated three-way valves and associated by-pass conduits in the delivery line. A fourth arrangement utilizes the solenoid actuated valve and return flow pump with a check valve in the return conduit. The fifth arrangement employs a three-way valve and a return flow pump in a by-pass li…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.