Internal-combustion engines – Lubricators – Crankcase – pressure control
Reexamination Certificate
1999-10-21
2001-08-14
Wolfe, Willis R. (Department: 3747)
Internal-combustion engines
Lubricators
Crankcase, pressure control
Reexamination Certificate
active
06273050
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of Invention
The invention relates to an improved two-stroke cylinder and, in particular, to a highly efficient cylinder in which lubricant and fuel are separately functioning to lower the emission of carbon monoxide and carbohydrogenic compounds.
2. Related Art
A conventional two-stroke cylinder is shown in FIG.
1
. The cylinder comprises a compression chamber
3
formed by a cylinder wall
2
, an exhaust channel
6
on the cylinder wall
2
, an exhauster
5
and surrounding blades
4
. Since the conventional cylinder
1
does not have the structure to separate lubricant and fuel, therefore the oil injected into the compression chamber is a mixture of the fuel and lubricant. The fuel therefore can not have full combustion and a large amount of carbon monoxide and carbohydrogenic compounds are emitted to the environment. Additionally, conventional cylinders are easily failed under long time operation. On the other hand, if the engine is at rest for a long time without operation or a new vehicle is not sold for a long time, the crankcase of the cylinder can be flooded with lubricant so that the engine can not be or is not easy to be started.
SUMMARY OF THE INVENTION
In view of the foregoing, a main object of the present invention is to provide an independent lubricant guiding structure for the cylinder so that the fuel and lubricant can be separately functioning. The defect of releasing a large amount of carbon monoxide and carbohydrogenic compounds due to incomplete combustion of the combination of fuel and lubricant will not happen. The cylinder can be directly lubricated without the occurrence of the engine failure. The piston is designed to cover the fuel outlet so that a vehicle at rest for a long time will not be hard to start due to the lubricant filling the crankcase.
Furthermore, the invention provides a smooth motion for the piston, lowers the abrasion and noise of the cylinder wall to the least and thus greatly raises the operation efficiency.
Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
REFERENCES:
patent: 3695240 (1972-10-01), Cookson
patent: 4993380 (1991-02-01), Hsu
patent: 5065708 (1991-11-01), Wehle et al.
Ali Hyder
Pro-Techtor Inter-national Services
Wolfe Willis R.
LandOfFree
Two-stroke cylinder does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Two-stroke cylinder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two-stroke cylinder will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2525164