Mixture lubrication of a four-stroke internal combustion engine
US6877474B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 27, 2003 |
| Grant date | Apr 12, 2005 |
| Priority date | — |
| Expiry date | May 27, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B2075/027
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In order to provide a four-stroke internal combustion engine (100) having a control chamber (16) and a cylinder (14), provided with at least one intake valve (12) and at least one exhaust valve, which has a crankshaft chamber (22) formed by a crankcase (26), in which a connecting rod (24) connected to the reciprocating piston (18) drives a mounted crankshaft (28), having an ignition device and having a supply device (30) for an air-fuel mixture, which is connected on one side via a connection line (32) to the control chamber (16) and on the other side in the flow direction (54) of the air-fuel mixture to the piston chamber (20) via a throttle device (34) positioned in a mixture intake port (36) and via a mixture supply line (38), which is connected via a non-return valve (40a) to the crankshaft chamber (22), and having an overflow channel (44) between the crankshaft chamber (22) and control chamber (16), in which a camshaft (46) is positioned for controlling the intake and exhaust valves (10, 12), which allows reliable lubrication of all parts, particularly during idling, and stable idling operation simply and without regulatory outlay, it is suggested that the mixture supply line …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.