Polaris Industries Inc.

Dean J Hedlund

Ryan W Sorenson

James H Buchwitz

David A Foss

Nathan D Dahl

Brad W Teubner

Chad M Cunningham

Christopher R Benning

An engine is disclosed which may operate in a first operating state wherein a spark ignited fuel is ignited in a combustion chamber with an igniter and a second operating state wherein a compression ignited fuel is ignited in a combustion chamber with an igniter. A compression ratio in the combustion chamber being up to about eight to one. The engine may be a four-stroke engine. The engine may include a piston having a top portion with a recessed central portion.

Method and operation of an engine

The present invention provides a vehicle IR lighting system where manual actuation of a single switch both activates vehicle IR lights and automatically disables all non-IR vehicle lights. The IR lighting system provides a single switch enabling an IR light source and contemporaneously disabling all non-IR light sources. The output of a manual IR light switch is connected as the control line to a relay switch. When the manual IR light switch is closed thus connecting power to the IR light, the output opens the relay connected between vehicle power and the non-IR vehicle lights thus automatically turning off power to all non-IR vehicle lights.

Switch enabled infrared lighting system with non-IR light elimination

An all terrain vehicle with a plurality of independent winches is provided. One winch may be mounted on the front of the all terrain vehicle. Another winch may be mounted at the rear of the all terrain vehicle. The winches are controlled independently of each other. For example, the front winch can be driven in a forward direction or a reverse direction independently of the rear winch, and the rear winch can be driven in a forward direction or a reverse direction independently of the front winch. Additionally, the front winch and the rear winch may be engaged to operate simultaneously.

All terrain vehicle with multiple winches

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Roseau, MN, United States of America

Dean J Hedlund