Four-stroke internal combustion engine with at least two inlet valves
US6520146B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 12, 2001 |
| Grant date | Feb 18, 2003 |
| Priority date | — |
| Expiry date | Mar 12, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B2075/027
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A four-stroke internal combustion engine with at least two inlet valves and an inlet flow path with at least two inlet ports per cylinder which branch off from a common inlet pipe and are guided separately up to the inlet valves and of which at least one inlet port is designed as a charge loading port and at least one inlet port as a volumetric port, with a throttle device for volumetric control being provided in the inlet flow path and the inlet flow path is connected with a fuel supply device. In order to achieve in the simplest possible way an improvement of the exhaust gas quality at low fuel consumption, the fuel supply device is formed by a joint carburetor for both inlet ports, with preferably the carburetor being arranged in the zone of the branching of the inlet ports from the inlet pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.