Device with fuel injection and lubricant delivery means for internal combustion engines
US5787854A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1997 |
| Grant date | Aug 4, 1998 |
| Priority date | — |
| Expiry date | Apr 10, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B2075/025
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In order to provide a device with fuel injection and lubricant feed means for internal combustion engines, preferably for manual guided equipment, such as chain saws, with a helical gear wheel (12) mounted on a crankshaft (11) or driven indirectly by the crankshaft (11), which is in engagement with a mating gear wheel (13) for driving the lubricant pump (16), wherein a piston (17) of the lubricant pump (16) forms a trunnion for the mating gear wheel (13) and possesses an oblique anterior surface (18) which bears against a lifting stud (20) adjustably retained in the housing, for aiding lubricant delivery adjustment of the lubricant pump (16), in a compact assembly, preferably a chain saw with several, lubrication circuits and a high-pressure fuel feed it is proposed that the helical gear wheel (12) be in engagement with two mating gear wheels (13,14), each connected with a drive shaft (17,26) for one lubricant pump (16,31) and/or one fuel pump (27).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.