Adhesively bonded engine and transmission parts
First Claim
1. A valve cover assembly comprising a valve cover having a mating surface adapted to be attached to a cylinder head of an internal combustion engine having a continuous bead of an adhesive disposed on the perimeter of the mating surface of the valve cover wherein the adhesive comprises a polythiol ether having two or more reactive groups capable of reacting with a crosslinking agent and a crosslinking agent.
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Accused Products
Abstract
In one embodiment the invention is a system and method for bonding parts to an engine or a transmission which comprises contacting with the part or the location of the engine or the transmission to which the part is to be attached an adhesive comprising a polythiol ether having two or more reactive groups capable of reacting with a curing agent and a curing agent for the polythiol ether and thereafter contacting the part with the engine or transmission such that the adhesive is disposed between them and curing the adhesive.
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Citations
19 Claims
- 1. A valve cover assembly comprising a valve cover having a mating surface adapted to be attached to a cylinder head of an internal combustion engine having a continuous bead of an adhesive disposed on the perimeter of the mating surface of the valve cover wherein the adhesive comprises a polythiol ether having two or more reactive groups capable of reacting with a crosslinking agent and a crosslinking agent.
- 7. An engine assembly comprising one or more valve covers having mating surfaces and one or more cylinder heads having mating surfaces adapted to fit to the mating surfaces of the valve covers wherein each valve cover is adhesively bonded to a cylinder head wherein a continuous layer of adhesive is disposed between the mating surfaces of each valve cover and the cylinder head to which each valve cover is bonded, wherein the continuous layer of adhesive forms a seal between the mating surface of each valve cover and cylinder head pair such that the transmission of gasses and liquids between each valve cover and cylinder head pair where the mating surfaces are in contact is significantly reduced or prevented wherein the adhesive comprises a polythiol ether having two or more reactive groups capable of reacting with a crosslinking agent and a crosslinking agent.
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15. A method for bonding a valve cover to a cylinder head comprising
a) applying to the valve cover or the cylinder head, wherein the valve cover has a mating surface adapted to be mated with a mating surface of a cylinder head, a continuous bead or film of adhesive along the entire mating surface of the valve cover or the cylinder head; -
b) contacting the mating surface of the valve cover with the mating surface of the cylinder head such the continuous bead or film of adhesive is disposed between the mating surfaces of the valve cover and the cylinder head; c) curing the adhesive to form a permanent bond between the mating surfaces of the valve cover and the cylinder head wherein the adhesive forms a seal between the valve cover and the cylinder head, wherein the adhesive comprises a polythiol ether having two or more reactive groups capable of reacting with a crosslinking agent and a crosslinking agent and the adhesive has sufficient strength after application to hold the one of more valve covers in place. - View Dependent Claims (16, 17, 18)
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19. A method of bonding a part to an automobile engine or transmission which comprises contacting an adhesive comprising a polythiol ether having two or more reactive groups and a curing agent for the polythiol ether with one or both of the part or the automobile engine or transmission, contacting the part and the engine or transmission with the adhesive located between the parts and curing the adhesive so that the joint between the part and the engine or transmission is sealed.
Specification