Housing structure of electronic control unit and mounting structure of the same
First Claim
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1. A housing for an electronic control unit mounted inside a vehicle engine compartment, the housing comprising:
- a first member having heat conductivity; and
a second member having heat conductivity lower than that of the first member, wherein;
the first member is made of metal and the second member is made of resin,the first member is arranged adjacent to a part that readily transfers heat away from the first member, and the second member is arranged adjacent to a part that radiates heat in the engine compartment,the first member includes a groove and the second member has a projection, and the projection and the groove are joined with an elastic adhesive,the projection includes a hook portion to restrict separation of the first member and the second member, anda dimensional allowance is defined between the projection and groove.
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Abstract
A housing for enclosing an electronic control unit is constructed of a resinous cover and a metallic case having heat conductivity higher than that of the resinous cover. An air intake module is mounted on an engine inside an engine compartment. The air intake module forms an air passage through which air flows from an air inlet toward the engine. The electronic control unit is mounted on the air intake module such that the metallic case is exposed to the air passage in the air intake module and the resinous cover is exposed to the outside of the air intake module, that is, exposed in the engine compartment.
49 Citations
15 Claims
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1. A housing for an electronic control unit mounted inside a vehicle engine compartment, the housing comprising:
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a first member having heat conductivity; and a second member having heat conductivity lower than that of the first member, wherein; the first member is made of metal and the second member is made of resin, the first member is arranged adjacent to a part that readily transfers heat away from the first member, and the second member is arranged adjacent to a part that radiates heat in the engine compartment, the first member includes a groove and the second member has a projection, and the projection and the groove are joined with an elastic adhesive, the projection includes a hook portion to restrict separation of the first member and the second member, and a dimensional allowance is defined between the projection and groove. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 12)
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10. An electronic control unit mounted on a casing of an air intake module in an engine compartment comprising:
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a housing formed of a resin cover and a metal case, the metal case having one of a square-shape and a rectangular-shape; an electronic circuit board housed in said housing; and an electronic component disposed on said electronic circuit board that generates heat when activated;
whereinthe casing of said air intake module has an air passage therein through which air flows toward the vehicle engine and an opening which partially opens the air passage, the opening has a shape corresponding to the shape of the metal case, said housing is mounted on said opening of said casing in a manner such that said metal case covers said opening to close said opening and form said air passage, the casing of the air intake module has a first wall forming the air passage therein, the first wall further forms a recessed portion partially depressed from the first wall, and the opening is formed in the recessed portion, and the housing is installed in the recessed portion such that the metal case closes the opening. - View Dependent Claims (11, 13, 14, 15)
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Specification