EP0309986A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Electronic control apparatus for use in automobile
Assignee: Hitachi Ltd
•
Filing: 1988-09-27
•
Granted: —
•
Expires: 2008-09-27
Abstract
Abstract An electronic control apparatus for use in an automobile has a base (14) of a good thermal conductivity having one side disposed in contact with engine cooling water. Semiconductor devices (8, 9, 10, 22, 90) are disposed on the other side of the base so that the semiconductor devices are maintained at the temperature of the engine cooling water, whereby the influence of high ambient air temperature to the semiconductor devices is reduced.
Inventors
- 👤 Yuichi Kashimura
- 👤 Shizuhisa Watanabe
- 👤 Seiji Suda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 23:32
CPC Classifications
B; B60; B60R; B60R16/00; F; F02; F02D; F02D41/00; F02D41/30; F02D41/3005; H; H05; H05K; H05K7/00; H05K7/20; H05K7/20845; H05K7/20872; F01; F01P; F01P2050/00; F01P2050/30; F02D2400/00; F02D2400/18
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
74 words
An electronic control apparatus for use in an automobile, coprising: a) a base (14) having one side in which a passage (15) for circulation of an engine cooling water is formed and the other side on which semiconductor devices (8, 9, 10, 22, 90) are disposed, said base body being made of a material having a good thermal conductivity; and b) an enclosure (23) fixed to said base to hermetically cover said semiconductor devices.
Claim 2
Dependent Claim
74 words
An electronic control apparatus for use in an automobile, coprising: a) a base (14) having one side in which a passage (15) for circulation of an engine cooling water is formed and the other side on which semiconductor devices (8, 9, 10, 22, 90) are disposed, said base body being made of a material having a good thermal conductivity; and b) an enclosure (23) fixed to said base to hermetically cover said semiconductor devices.
Claim 3
Dependent Claim
44 words
An electronic control apparatus according to claim 1, wherein a flow control valve (28) is disposed at the inlet side of said passage, said flow control valve being arranged to open when the temperature of said engine cooling water has reached a predetermined temperature.
Claim 4
Dependent Claim
18 words
An electronic control apparatus according to claim 1, wherein a temperature sensor (6) is disposed on said base.
Claim 5
Dependent Claim
18 words
An electronic control apparatus according to claim 1, wherein a knock sensor (7) is disposed on said base.
Claim 6
Dependent Claim
58 words
An electronic control apparatus according to claim 1, wherein a board (20) for carrying said semiconductor devices is disposed between said base and said enclosure, input and output units (8, 10) being disposed between said board and said base, and an arithmetic unit (9) and a data storage device (90) being disposed between said board and said enclosure.
Claim 7
Dependent Claim
113 words
An electronic control apparatus for use in an automobile, comprising: a) a first passage for cooling water formed in a wall of an intake manifold (29) of an engine and having an opening (32) which opens to atmosphere; b) a base (14) mounted on said intake manifold so as to cover said oening of said first passage, said base having one side in which a second passage (15) for circulation of the cooling water is formed and the other side on which semiconductor devices are disposed, said base being made of a material having a good thermal conductivity; and c) an enclosure (23) fixed to said base to hermetically cover said semiconductor devices.
Claim 8
Dependent Claim
113 words
An electronic control apparatus for use in an automobile, comprising: a) a first passage for cooling water formed in a wall of an intake manifold (29) of an engine and having an opening (32) which opens to atmosphere; b) a base (14) mounted on said intake manifold so as to cover said oening of said first passage, said base having one side in which a second passage (15) for circulation of the cooling water is formed and the other side on which semiconductor devices are disposed, said base being made of a material having a good thermal conductivity; and c) an enclosure (23) fixed to said base to hermetically cover said semiconductor devices.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.