Patent ID: 6789513
Filing Date: 2004-09-14
Classification: F02B

Abstract:
A six-stroke internal combustion engine with reciprocating piston, comprising:(a) at least one intake-exhaust valve; said intake-exhaust valve is located at the top of the combustion chamber; said intake-exhaust valve functions as an intake valve in an intake stroke; said intake-exhaust valve functions as an exhaust valve in an exhaust stroke; (b) said intake-exhaust valve opens at the beginning of an intake stroke and closes at the end of the intake stroke; then (c) said intake-exhaust valve remains closed in the compression stroke and the combustion stroke; and then (d) said intake-exhaust valve opens at the beginning of an exhaust stroke and closes at the end of the exhaust stroke; and then (e) said intake-exhaust valve opens in the middle of the fifth stroke while a piston is moving downward; and then (f) said intake-exhaust valve closes at the beginning or in the middle of the sixth stroke while the piston is moving upward.