Emission control system for a crankcase scavenged two-stroke engine operating near idle
US4932371A · kind A · utility
10Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 14, 1989 |
| Grant date | Jun 12, 1990 |
| Priority date | — |
| Expiry date | Aug 14, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2400/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An engine control system is disclosed for reducing the hydrocarbon content in exhaust gas from a crankcase scavenged, two-stroke engine in the operating range near idle, with light operator induced engine loading. As operator demand for engine output power is increased, the control system increases the fuel per cylinder delivered to the engine, while restricting the supplied mass of air per cylinder to a value less than or equal to that flowing at unloaded engine idle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.