TWO-STROKE ENGINE AND COMPONENTS THEREOF
First Claim
1. A piston arrangement for an engine, comprising:
- a crankshaft located within a crank case;
a primary piston located within a first cylinder and interconnected to said crankshaft by a first drive rod for converting reciprocating motion of said primary piston within said first cylinder driven by combustion occurring within said first cylinder into rotational motion of said crankshaft; and
a pumping piston located within a second cylinder and interconnected to said crankshaft by a second drive rod for converting the rotational motion of said crankshaft into reciprocating motion of said pumping piston within said second cylinder;
said pumping piston being located between said primary piston and the crank case and sealing said first and second cylinders from the crankcase; and
the reciprocating motion of said pumping piston within said second cylinder aids in drawing fresh air or air-and-fuel mixture into the first and second cylinders for a new cycle and aids in pushing exhausted gas-charge of a previous cycle out through an exhaust port.
1 Assignment
0 Petitions
Accused Products
Abstract
A piston arrangement for an engine is provided and includes a crankshaft located within a crank case and a primary piston located within a first cylinder and interconnected to the crankshaft by a first drive rod for converting reciprocating motion of the primary piston within the first cylinder driven by combustion occurring within the first cylinder into rotational motion of the crankshaft. The arrangement also includes a pumping piston located within a second cylinder and interconnected to the crankshaft by a second drive rod for converting the rotational motion of the crankshaft into reciprocating motion of the pumping piston within the second cylinder. The pumping piston is located between the primary piston and the crank case and seals the first and second cylinders from the crankcase. A stepped-piston and a two-stroke engine are also disclosed.
-
Citations
15 Claims
-
1. A piston arrangement for an engine, comprising:
-
a crankshaft located within a crank case; a primary piston located within a first cylinder and interconnected to said crankshaft by a first drive rod for converting reciprocating motion of said primary piston within said first cylinder driven by combustion occurring within said first cylinder into rotational motion of said crankshaft; and a pumping piston located within a second cylinder and interconnected to said crankshaft by a second drive rod for converting the rotational motion of said crankshaft into reciprocating motion of said pumping piston within said second cylinder; said pumping piston being located between said primary piston and the crank case and sealing said first and second cylinders from the crankcase; and the reciprocating motion of said pumping piston within said second cylinder aids in drawing fresh air or air-and-fuel mixture into the first and second cylinders for a new cycle and aids in pushing exhausted gas-charge of a previous cycle out through an exhaust port. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A piston arrangement for an engine, comprising:
-
a crankshaft located within a crank case; a primary piston interconnected to said crankshaft by a first drive rod; and a pumping piston interconnected to said crankshaft by a second drive rod, said pumping piston being located between said primary piston and said crankshaft and being slidable along a length of said primary piston. - View Dependent Claims (11, 12, 13, 14, 15)
-
Specification