Claims
- 1. In combination with a transmission having a hydraulic unit, a control unit, comprising:
an electronic control circuit; a pressure sensor electrically connected to said electronic control circuit for measuring a hydraulic pressure in the transmission, said pressure sensor being configured as a silicon chip; a common housing having a metallic base plate connected pressure-tightly to the hydraulic unit of the transmission; said pressure sensor and said electronic control circuit being accommodated in said common housing; a metallic support plate for said pressure sensor, said metallic support plate being fitted into said metallic base plate; said metallic support plate having an end face disposed in said common housing, and said metallic support plate being formed with a borehole, said pressure sensor being subjected, via said borehole, to a pressure prevailing in the hydraulic unit; and a metallic ring mounted on said end face of said metallic support plate, and said pressure sensor being mounted on said metallic ring.
- 2. The control unit according to claim 1, wherein:
said metal ring has a surface; and a gold coating is provided on said surface.
- 3. The control unit according to claim 1, including an O-ring for sealing said metallic support plate from the hydraulic unit.
- 4. The control unit according to claim 1, including a substrate with electrical trimming elements, said substrate being provided on said metallic support plate.
- 5. The control unit according to claim 1, wherein:
said metallic support plate is composed of a relatively harder metallic material; and said metallic base plate is composed of a relatively softer material.
- 6. The control unit according to claim 1, wherein:
said metallic support plate is composed of steel; and said metallic base plate is composed of aluminum.
- 7. The control unit according to claim 1, including a glass cylinder inserted between said metallic ring and said pressure sensor.
- 8. The control unit according to claim 1, wherein the transmission is an automatic transmission.
- 9. In a motor vehicle having a transmission with a hydraulic unit, a control unit, comprising:
an electronic control circuit; a pressure sensor electrically connected to said electronic control circuit for measuring a hydraulic pressure in the transmission, said pressure sensor being configured as a silicon chip; a common housing having a metallic base plate connected pressure-tightly to the hydraulic unit of the transmission; said pressure sensor and said electronic control circuit being accommodated in said common housing; a metallic support plate for said pressure sensor, said metallic support plate being fitted into said metallic base plate; said metallic support plate having an end face disposed in said common housing, and said metallic support plate being formed with a borehole, said pressure sensor being subjected, via said borehole, to a pressure prevailing in the hydraulic unit; and a metallic ring mounted on said end face of said metallic support plate, and said pressure sensor being mounted on said metallic ring.
- 10. In combination with an air induction pipe, a control unit, comprising:
an electronic control circuit; a pressure sensor electrically connected to said electronic control circuit for measuring an air pressure in the air induction pipe, said pressure sensor being configured as a silicon chip; a common housing having a metallic base plate connected pressure-tightly to the air induction pipe; said pressure sensor and said electronic control circuit being accommodated in said common housing; a metallic support plate for said pressure sensor, said metallic support plate being fitted into said metallic base plate; said metallic support plate having an end face disposed in said common housing, and said metallic support plate being formed with a borehole, said pressure sensor being subjected, via said borehole, to a pressure prevailing in the air induction pipe; and a metallic ring mounted on said end face of said metallic support plate, and said pressure sensor being mounted on said metallic ring.
- 11. The control unit according to claim 10, wherein:
said metal ring has a surface; and a gold coating is provided on said surface.
- 12. The control unit according to claim 10, including an O-ring for sealing said metallic support plate from the air induction pipe.
- 13. The control unit according to claim 10, including a substrate with electrical trimming elements, said substrate being provided on said metallic support plate.
- 14. The control unit according to claim 10, wherein:
said metallic support plate is composed of a relatively harder metallic material; and said metallic base plate is composed of a relatively softer material.
- 15. The control unit according to claim 10, wherein:
said metallic support plate is composed of steel; and said metallic base plate is composed of aluminum.
- 16. The control unit according to claim 10, including a glass cylinder inserted between said metallic ring and said pressure sensor.
Priority Claims (1)
Number |
Date |
Country |
Kind |
198 38 427.0 |
Aug 1998 |
DE |
|
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application is a continuation of copending International Application No. PCT/DE99/02621, filed Aug. 20, 1999, which designated the United States.
Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/DE99/02621 |
Aug 1999 |
US |
Child |
09793827 |
Feb 2001 |
US |