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US 11,578,647 B2Granted
Engine
AssigneeArctic Cat Inc.
InventorsEberhard Wizgall, Dominik Hermann
Life of this patent
Estimating the term…
Abstract
Embodiments are directed toward an engine. In some embodiments, the engine includes a water pump and a balancer shaft. In some embodiments, the water pump has a plain bearing. In some embodiments, plain bearing is supplied with pressurized oil. In some embodiments, the balancer shaft drives the water pump as well as cam shafts.
Claims43
An engine comprising:
- a water pump having a plain bearing that is supplied with pressurized oil;
- a balancer shaft that drives the water pump;
- an engine housing having an exterior surface;
- and
- a spacer that defines a support surface that is spaced apart from the exterior surface of the engine housing, the water pump being coupled to the support surface and spaced apart from the exterior surface of the engine housing.
2 more elements
An engine comprising:
- a water pump having a plain bearing that is supplied with pressurized oil;
- a balancer shaft that drives the water pump;
- a water pump drive shaft, the water pump having an impeller, the water pump drive shaft driving the impeller;
- an engine housing;
- and
- a balancer driven gear housed in the engine housing, the balancer shaft driving the balancer driven gear, the balancer driven gear driving the water pump drive shaft, the balancer shaft being housed in the engine housing, the balancer shaft driving the balancer driven gear,
- wherein the balancer driven gear is disposed in a first side of the engine housing, the water pump being coupled to a support surface that faces a second side of the engine housing that is opposite the first side of the engine housing.
4 more elements
An engine comprising:
- a water pump having a plain bearing that is supplied with pressurized oil;
- a balancer shaft that drives the water pump;
- an engine housing having an exterior surface;
- a spacer that defines a support surface that is spaced apart from the exterior surface of the engine housing, the water pump being coupled to the support surface and spaced apart from the exterior surface of the engine housing;
- a water pump drive shaft that extends through the spacer, the water pump having an impeller, the spacer having a tubular structure that defines a plain hearing, the water pump drive shaft having a proximal end portion and an opposite distal end portion coupled to the impeller, the water pump drive shaft extending through the plain bearing and driving the impeller;
- and
- a radial seal ring disposed opposite the plain bearing from the proximal end portion of the water pump drive shaft.
4 more elements
An engine comprising:
- a water pump having a plain bearing that is supplied with pressurized oil;
- a balancer shaft that drives the water pump;
- an engine housing having an exterior surface;
- and
- a spacer that defines a support surface that is spaced apart from the exterior surface of the engine housing, the water pump being coupled to the support surface and spaced apart from the exterior surface of the engine housing,
- wherein the spacer includes a male spacer portion and a female spacer portion that is configured to receive the male spacer portion,
- wherein the water pump has an impeller and a water pump drive shaft driving the impeller, the water pump drive shaft extending through the male spacer portion and the female spacer portion.
4 more elements
Dependencies are inferred from the claim text.