Device for increasing fuel economy of an internal combustion engine
US4106442A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 15, 1976 |
| Grant date | Aug 15, 1978 |
| Priority date | — |
| Expiry date | Nov 15, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A device for improving the fuel economy of new or existing internal combustion engines includes a vacuum sensing switch connected to the intake manifold of the engine, and a speed-sensing electronic circuit connected to the distributor of the engine. The device also includes a solenoid operated valve interposed between the ambient atmosphere and the positive crankcase ventilation valve normally found in an internal combustion engine. The device includes a computing circuit which operates on the information from the speed sensor and the vacuum switch to actuate the solenoid operated valve when the engine is idling, accelerating, or deaccelerating. The ambient, uncarbureted air introduced through the positive crankcase ventilation valve increases the air-to-fuel ratio within the intake manifold, thereby increasing the efficiency of the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.