2-cycle engine with valve system and method for controlling the engine
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorsMyung Sik Choi, In Gee Suh, Woo Tae Kim
Life of this patent
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Abstract
The present disclosure relates to a 2-cycle engine with a valve system that generates power during every one crankshaft rotation. The 2-cycle engine of the present disclosure includes the valve system opening and closing an air intake valve and an exhaust valve and includes a turbocharger. In the turbocharger, the air intake valve and the exhaust valve are respectively opened and closed once during one crankshaft rotation, and the valve system is configured to control the turbocharger using difference between an air intake pressure and an exhaust pressure. Accordingly, a current air intake reaches a target air intake.
Claims12
A 2-cycle engine with a valve system, the 2-cycle engine comprising:
- a camshaft rotated in conjunction with a crankshaft;
- a valve system configured that an air intake valve and an exhaust valve are opened or closed depending on the camshaft rotation;
- a turbocharger compressing air and supplying the compressed air into a cylinder;
- and
- a controller controlling operation of the turbocharger using a difference between an intake pressure and an exhaust pressure so that a current air intake reaches a target air intake,
- wherein the air intake valve and the exhaust valve are opened and closed once, respectively, during one crankshaft rotation.
A method for controlling a 2-cycle engine comprising a camshaft rotated in conjunction with a crankshaft, a valve system configured that an air intake valve and an exhaust valve are opened or closed depending on the camshaft rotation, a turbocharger compressing air and supplying the compressed air into a cylinder, and a controller controlling operation of the turbocharger, wherein the air intake valve and the exhaust valve are opened and closed once, respectively, during one crankshaft rotation, the method comprising the step of:
- controlling operation of the turbocharger using a difference between an intake pressure and an exhaust pressure so that a current air intake reaches a target air intake.
Dependencies are inferred from the claim text.