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US 12,654,798 B2Granted
Vehicle engine thermal management by precision cooling using series flow-type cooling system
AssigneeHarley-Davidson Motor Company
InventorsMichael Carlin, Matt Pavlat, Johann Voges, Robert Brummond, Anthony Coffey
Life of this patent
Estimating the term…
Abstract
An example liquid cooling system for an internal combustion engine (ICE) of a vehicle, a vehicle having such a liquid cooling system, a cooling circuit for such a liquid cooling system, a method of cooling a vehicle engine. The liquid cooling system having a cooling circuit with a series flow structural configuration that provides precise cooling to the critical hot zones of the cylinder heads.
Claims20
A vehicle system comprising:
- a vehicle engine having a front cylinder head and a rear cylinder head with a pair of rear exhaust ports that are spaced apart to define a gap;
- and
- a liquid cooling system for thermal management of the vehicle engine, the liquid cooling system having a coolant circuit including one or more cooling tubes fluidically connected in series to define a channel for circulation of a cooling medium to cool the front cylinder head and the rear cylinder head, the cooling tubes including a rear cylinder precision cooling tube having a serpentine shape that extends through the gap between the pair of rear exhaust ports to thermally contact one or more heat exchange surfaces of the rear exhaust ports.
A vehicle, comprising:
- a vehicle structure;
- a vehicle engine mounted on the vehicle structure, the vehicle engine including a front cylinder head of a front cylinder and a rear cylinder head of a rear cylinder having a pair of rear exhaust ports;
- and
- a liquid cooling system having a coolant circuit including one or more cooling tubes fluidically connected in series to define a channel for circulation of a cooling medium to cool the front cylinder head and the rear cylinder head, the cooling tubes including a rear cylinder precision cooling tube having a serpentine shape that extends through a gap between the rear exhaust ports to thermally contact one or more heat exchange surfaces of the rear exhaust ports.
1 more element
A vehicle engine, comprising:
- a front cylinder head and a rear cylinder head with a pair of rear exhaust ports that are spaced apart to define a gap;
- and
- a coolant circuit for thermal management of the vehicle engine, the coolant circuit having one or more cooling tubes fluidically connected in series to define a channel for circulation of a cooling medium to cool the front cylinder head and the rear cylinder head, the cooling tubes including a rear cylinder precision cooling tube having a serpentine shape that extends through the gap between the pair of rear exhaust ports to thermally contact one or more heat exchange surfaces of the rear exhaust ports.
Dependencies are inferred from the claim text.