Cooling jacket for exhaust valve and thermostat and cooling bottle
AssigneePolaris Industries Inc.
InventorsDarren J. Hedlund, Oliver J. Young
Life of this patent
Estimating the term…
Abstract
A coolant bottle defines a first chamber and a second chamber fluidly coupled to the first chamber at a valve seat. The first chamber is fluidly coupled to a source of heated engine cooling fluid, while the second chamber is fluidly coupled to an engine water pump. A thermally responsive actuator is disposed within the first chamber, and has a thermally actuated sliding member having a valve seat engaging surface. The thermally actuated sliding member is movable from a first open position to a second closed position when the coolant is above a first temperature. The thermally responsive actuator is disposed within the first chamber.
Claims20
A vehicle engine comprising:
- an engine head defining a fluid accepting cooling passage;
- and
- an engine block fluidly coupled to the engine head, the engine block defining a combustion chamber and exhaust ports and a first cooling path which branches into a first path and a second path, the first path surrounding the exhaust ports and the second path surrounding the combustion chamber, the first path passing cooling fluid to the engine head after passing the exhaust ports.
A vehicle engine comprising:
- an engine head;
- and
- an engine block fluidly coupled to the engine head, wherein the engine block defines a combustion chamber and exhaust ports;
- an interior cooling chamber defined in both the engine block and the engine head that accepts fluid flow;
- and
- a first cooling path in the interior cooling chamber that divides into a first flow path and a second flow path;
- wherein a first velocity of a fluid at an entrance into the interior cooling chamber is greater than 2.1 meters per second (m/s);
- wherein a second velocity of the fluid at an entrance to the second flow path is greater than 2.4 m/s.
A vehicle engine comprising:
- an engine head;
- and
- an engine block fluidly coupled to the engine head, wherein the engine block defines a combustion chamber and exhaust ports;
- an interior cooling chamber defined in both the engine block and the engine head that accepts fluid flow;
- and
- a first cooling path in the vehicle engine that divides into a first flow path and a second flow path;
- wherein the first flow path directs a first portion of the fluid flow directly about the exhaust ports;
- wherein the second flow path directs a second portion of the fluid flow directly about the combustion chamber.
Dependencies are inferred from the claim text.