SAE J631:2018 pdf free

SAE J631:2018 pdf free.Radiator Nomenclature
A strip of metal having a series of holes matching the bolting hole pattern of the tanks and headers of a bolted radiator, and placed on the side of the header opposite to the tank and gasket for the purpose of clamping the joint between the tank and header by means of bolts and nuts. Also called Header Bar. Some radiators with very light gauge tanks have bolting strips on the tank flange as well. Also known as core washer. See Figures 1, 2, and 3.
An oil-to-coolant oil cooler mounted in the bottom tank of a radiator, typically used to cool engine, transmission, power steering, or hydraulic system fluid.
A radiator in which the bond between the fins and tubes and between the tubes and headers, is accomplished by brazing.Includes vacuum brazed aluminum radiators, and controlled atmosphere brazed aluminum and copper/brass radiators.Brazing is normally conducted inside a furnace.
A small hole in the side of a radiator fller neck extension for the purpose of venting the air in the expansion volume of a radiator to the fller neck during engine warm-up.
This is the main radiator in a cooling system where an additional low temperature cooling circuit exists, within the overall system that requires an additional Low Temp Radiator (LTR). In this type of system, the design of the HTR is capable of handling high coolant flows and is responsible for managing the majority of the engine’s heat rejection into the coolant. For clarity, the term HTR is normally used only when there is a low temp circuit and LTR in use. It would otherwise be simply called the radiator. Also known as Jacket Water Radiator.
A radiator core fin having louvers for the purpose of reducing the boundary layer thickness by turbulating the cooling air for improved heat transfer performance. The louvers improve heat transfer over a plain fin by repeatedly reducing the air boundary layer thickness.
A radiator for use in a Low Flow Cooling System, which under normal conditions operates at a coolant flow through the radiator of significantly less than full engine coolant flow rate, thus increasing the temperature drop of the coolant through the radiator. Usually used to provide low temperature coolant to a liquid cooled charge air cooler.SAE J631 pdf free download.