Two stroke engine
OwnerYung-ching Chen, Chih-chieh Cheninventors
Life of this patent
Estimating the term…
Abstract
This invention relates to an improvement of two stroke engine in which a sleeve piston is employed to move up and down in the cylinder and to control alternatively the opening and closing of the intake guide and exhaust guide and to prevent the lubricant from exuding out of the crank case in an effort to ensure an environmental-friendly clean exhaust.
Claims4
An improvement of two stroke engine mainly comprises a sleeve piston over wrapped on the main piston, wherein the sleeve piston controls the opening and closing of the intake way and the exhaust way while the piston moves up and down in the cylinder and block the engine oil from leaking out of the crank case, it is unnecessary to mix engine oil into gasoline for the two-stroke engine of the invention, it produce the clean exhaust, which meets the emission standard, and the main characteristics are:
- the sleeve piston comprises a main piston and a sleeve piston;
- the main piston has the piston ring serving the sealing function and a taper at the lower part;
- the sleeve piston has a chamber with a large size groove race on the top and provides two sealing rings;
- the taper of the main piston is inserted into the chamber of the sleeve piston to form an integral sleeve piston assembly.
Dependencies are inferred from the claim text.