Fuel/air ratio control apparatus for a reciprocating aircraft engine
US4452207A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 19, 1982 |
| Grant date | Jun 5, 1984 |
| Priority date | — |
| Expiry date | Jul 19, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/1446
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel/air ratio control apparatus for a reciprocating engine used in light aircraft including a fuel metering apparatus (32) and a fuel/air ratio controller (40). The controller (40) generates an electrical signal (Wf/Wa) indicative of a desired fuel/air ratio based upon the flight condition of the aircraft and the metering apparatus (32) meters fuel flow (Wf) according to the mass airflow ingested into the engine. The desired fuel/air ratio is a best power ratio (Wf/Wa (2)) for takeoff and climb conditions and a best economy ratio (Wf/Wa (3)) for cruise conditions as derived from the exhaust gas temperature. These ratios are limited by a ratio (Wf/Wa (1)) based upon the maximum cylinder head temperature tolerable for a particular flight condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.