Polaris Industries Inc.

James A Barczak

Darren J Hedlund

Dallas J Blake

Chad A Dale

Joseph D Tharaldson

James H Buchwitz

Lucas R Salfer

Derek D Zimney

Reed A Hanson

Lawrence J Hosaluk

Daniel E Erickson

Alexander M Hetteen

Jon P Brandt

Stephen J Crain

Stephen G Crain

Trevor F Rhodes

Matthew D Reeves

Oliver J Young

Steven R Hanson

Trevoe F Rhodes

A system and method of controlling a turbocharged engine system includes receiving a boost mode selection signal and controlling the turbocharged engine system in response to the boost mode selection signal.

Turbocharger system for a two-stroke engine having selectable boost modes

A system for starting an engine of a vehicle has a fuel injector injecting fuel into a closed intake port to form an air fuel mixture. The system also includes an actuator rotating a crankshaft in a first direction to open the intake port by moving a piston within a cylinder coupled to the crankshaft. A combustion chamber defines between the cylinder and the port receiving the air fuel mixture through the intake port. The actuator rotates the crankshaft in a second direction to close the intake port. A spark plug ignites the air fuel mixture to start the engine. The engine also includes many other disclosed features.

Battery key, starter and improved crank

A two cycle engine having a block defining an exhaust port and a cylinder, a head, and a piston defining a combustion chamber is disclosed. The exhaust port has a resonant frequency that causes a portion of the combusted and uncombusted exhaust gasses to flow from the exhaust system and back into the combustion chamber. At a speed above the predetermined speed, a majority of the portion of the combusted and uncombusted exhaust gasses flows from the exhaust system and back into the combustion chamber without engaging the skirt of the piston.

Exhaust-tuning port and timing and combustion chamber shape

Growing community of inventors

Osceola, WI, United States of America

James A Barczak