US4893590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automotive liquid-cooled electronic control apparatus
Assignee: Hitachi Ltd
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Filing: 1988-09-28
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Granted: 1990-01-16
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Expires: 2008-09-28
Abstract
Abstract An electronic control apparatus for use in an automobile has a base of a good thermal conductivity having one side disposed in contact with engine cooling water. Semiconductor devices 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
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:43
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: 15
Claim 1
Independent Claim
99 words
An electronic control apparatus for use in an automobile, comprising: (a) a base having a passage defined therein for circulation of an engine cooling water and semiconductor devices disposed on a side of said base, said base being made of a material having a good thermal conductivity; and (b) an enclosure fixed to said side of said base to hermetically cover said semiconductor devices; wherein a flow control valve is disposed at an inlet side of said passage, said flow control valve being arranged to open when a temperature of said engine cooling water has reached a predetermined temperature.
Claim 2
Dependent Claim
99 words
An electronic control apparatus for use in an automobile, comprising: (a) a base having a passage defined therein for circulation of an engine cooling water and semiconductor devices disposed on a side of said base, said base being made of a material having a good thermal conductivity; and (b) an enclosure fixed to said side of said base to hermetically cover said semiconductor devices; wherein a flow control valve is disposed at an inlet side of said passage, said flow control valve being arranged to open when a temperature of said engine cooling water has reached a predetermined temperature.
Claim 3
Dependent Claim
17 words
An electronic control apparatus according to claim 1, wherein a temperature sensor is disposed on said base.
Claim 4
Dependent Claim
17 words
An electronic control apparatus according to claim 1 wherein a knock sensor is disposed on said base.
Claim 5
Dependent Claim
109 words
An electronic control apparatus for use in an automobile, comprising: (a) a base having a passage defined therein for circulation of an engine cooling water and semiconductor devices disposed on a side of said base, said base being made of a material having a good thermal conductivity; and (b) an enclosure fixed to said side of said base to hermetically cover said semiconductor devices: wherein a board for carrying said semiconductor devices is disposed between said base and said enclosure, input and output units being disposed between said board and said base, and an arithmetic unit and a data storage device being disposed between said board and said enclosure.
Claim 6
Dependent Claim
109 words
An electronic control apparatus for use in an automobile, comprising: (a) a base having a passage defined therein for circulation of an engine cooling water and semiconductor devices disposed on a side of said base, said base being made of a material having a good thermal conductivity; and (b) an enclosure fixed to said side of said base to hermetically cover said semiconductor devices: wherein a board for carrying said semiconductor devices is disposed between said base and said enclosure, input and output units being disposed between said board and said base, and an arithmetic unit and a data storage device being disposed between said board and said enclosure.
Claim 7
Dependent Claim
128 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 of an engine and having an opening which communicates with said first passage and opens to atmosphere; (b) a base mounted on said intake manifold so as to cover said opening of said first passage, said base having one side in which a second passage for circulation of the cooling water is formed, said second passage communicates with said opening and said first passage and another side on which semiconductor devices are disposed, said base being made of a material having a good thermal conductivity; and (c) an enclosure fixed to said another side of said base to hermetically cover said semiconductor devices.
Claim 8
Dependent Claim
128 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 of an engine and having an opening which communicates with said first passage and opens to atmosphere; (b) a base mounted on said intake manifold so as to cover said opening of said first passage, said base having one side in which a second passage for circulation of the cooling water is formed, said second passage communicates with said opening and said first passage and another side on which semiconductor devices are disposed, said base being made of a material having a good thermal conductivity; and (c) an enclosure fixed to said another side of said base to hermetically cover said semiconductor devices.
Claim 9
Dependent Claim
111 words
An electronic control apparatus for use in an automobile, comprising: a base of a material having a good thermal conductivity; a closure member; said base having one side cooperating with said closure member to define a passage for the circulation of an engine cooling water; and semiconductor devices disposed on the other side of said base wherein a board for carrying said semiconductor devices is disposed between said base and an enclosure, said enclosure covering the other side of said base and said semiconductor devices, input and output units being disposed between said board and said base and an arithmetic unit and a data storage device being disposed on said board.
Claim 10
Dependent Claim
111 words
An electronic control apparatus for use in an automobile, comprising: a base of a material having a good thermal conductivity; a closure member; said base having one side cooperating with said closure member to define a passage for the circulation of an engine cooling water; and semiconductor devices disposed on the other side of said base wherein a board for carrying said semiconductor devices is disposed between said base and an enclosure, said enclosure covering the other side of said base and said semiconductor devices, input and output units being disposed between said board and said base and an arithmetic unit and a data storage device being disposed on said board.
Claim 11
Dependent Claim
43 words
An electronic control apparatus according to claim 6, wherein a flow control valve 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 12
Dependent Claim
16 words
An electronic control apparatus according to claim 6, wherein a temperature is disposed on said base.
Claim 13
Dependent Claim
17 words
An electronic control apparatus according to claim 6, wherein a knock sensor is disposed on said base.
Claim 14
Dependent Claim
103 words
An electronic control apparatus for use in an automobile, comprising: a portion of an engine intake manifold which has a passage for cooling water and an opening which communicates with said passage; a base mounted on said intake manifold so as to cover said opening of said first passage, said base having one side facing said opening so that said one side is exposed to the cooling water; said base being made of a material having a good thermal conductivity; semiconductor devices disposed on the other side of said base; and an enclosure fixed to said base to hermetically cover said semiconductor devices.
Claim 15
Dependent Claim
103 words
An electronic control apparatus for use in an automobile, comprising: a portion of an engine intake manifold which has a passage for cooling water and an opening which communicates with said passage; a base mounted on said intake manifold so as to cover said opening of said first passage, said base having one side facing said opening so that said one side is exposed to the cooling water; said base being made of a material having a good thermal conductivity; semiconductor devices disposed on the other side of said base; and an enclosure fixed to said base to hermetically cover said semiconductor devices.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-15 | 1993-07-17 | 1994-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-15 | 1997-07-17 | 1998-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-15 | 2001-07-17 | 2002-01-16 | $7700.00 | Window Closed / Lapsed |