Automatic transmission control for a motor vehicle

• US 5,749,060 A
• Filed: 04/11/1996
• Issued: 05/05/1998
• Est. Priority Date: 10/11/1993
• Status: Expired due to Fees

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Lenninger, Ralf-Johannes, Kammerl, August, Graf, Friedrich, Ulm, Michael, Storjohann, Kai
• Primary Examiner(s): LOUIS JACQUES, JACQUES H
• Application Number:
  US08/631,805
• Time in Patent Office: 754 Days
• Field of Search: 364/424.1, 364/424.01, 364/424.03, 364/424.04, 364/550, 364/551.01, 364/431.04, 364/424.05, 364/431.03, 364/431.01, 364/132 , 364/431.11, 364/431.12, 395/900, 395/905, 395/182.05, 395/183.01, 477/125, 477/143, 477/906, 477/155, 477/110, 477/111, 477/68, 477/72-80, 340/825.05, 340/825.5, 340/825.01, 340/825.65, 340/825.06, 340/436-438, 340/459, 73/117.3
• US Class Current: 340/439
• CPC Class Codes: B60W 10/04 including control of propulsion units
• CPC Class Codes: B60W 10/11 Stepped gearings
• CPC Class Codes: B60W 30/18 Propelling the vehicle
• CPC Class Codes: B60W 30/1819 Propulsion control with control means using analogue circuits, relays or mechanical links
• CPC Class Codes: F16H 59/36 Inputs being a function of speed
• CPC Class Codes: F16H 59/72 dependent on oil characteristics, e.g. temperature, viscosity
• CPC Class Codes: F16H 61/0006 Electronic control units for transmission control, e.g. connectors, casings or circuit boards
• CPC Class Codes: Y10T 74/2186 Gear casings

Abstract

A control configuration for a motor vehicle includes an engine control and a transmission control which are connected to one another through a communication channel. A transmission is shifted by using electrohydraulic pressure control valves for actuating friction elements in the transmission. The transmission control is mounted at a transmission housing. Solenoids of the electrohydraulic pressure control valves are integrated into the transmission control. Sensor signals which are to be evaluated by the transmission control are transmitted by sensors to the transmission control wirelessly.

Claims

1. In a motor vehicle with an automatic transmission being accommodated in a housing and having friction elements, a control configuration for the motor vehicle, comprising:

sensors transmitting sensor signals wirelessly;

a transmission control device mounted at the transmission housing for receiving and evaluating the sensor signals transmitted by said sensors;

an engine control device;

a communication channel interconnecting said transmission control device and said engine control device; and

electrohydraulic pressure control valves having coils integrated into said transmission control device, said control valves shifting the transmission and actuating the friction elements in the transmission, wherein said sensors transmitting sensor signals wirelessly include a temperature sensor disposed inside the transmission housing, and including a transponder connected to said temperature sensor, and a receiver in said transmission control device for receiving temperature measurement values from said transponder wirelessly on request.

2. In a motor vehicle with an automatic transmission being accommodated in a housing and having friction elements, a control configuration for the motor vehicle, comprising:

sensors transmitting sensor signals wirelessly;

a transmission control device mounted at the transmission housing for receiving and evaluating the sensor signals transmitted by said sensors;

an engine control device;

a communication channel interconnecting said transmission control device and said engine control device; and

electrohydraulic pressure control valves having coils integrated into said transmission control device, said control valves shifting the transmission and actuating the friction elements in the transmission, wherein said sensors transmitting sensor signals wirelessly include a rotational speed sensor disposed inside the transmission housing, and including a transponder connected to said rotational speed sensor, and a receiver in said transmission control device for receiving rotational speed values from said transponder wirelessly on request.

3. In a motor vehicle with an automatic transmission being accommodated in a housing and having friction elements, a control configuration for the motor vehicle, comprising:

sensors transmitting sensor signals wirelessly;

a transmission control device mounted at the transmission housing for receiving and evaluating the sensor signals transmitted by said sensors;

an engine control device;

a communication channel interconnecting said transmission control device and said engine control device; and

electrohydraulic pressure control valves having coils integrated into said transmission control device, said control valves shifting the transmission and actuating the friction elements in the transmission, wherein said sensors transmitting sensor signals wirelessly are disposed inside the transmission housing, and including a transponder being connected to said sensors and being supplied with power wireless by induction, and a receiver in said transmission control device for receiving measurement values from said transponder wirelessly on request.

4. In a motor vehicle with an automatic transmission being accommodated in a housing and having friction elements, a control configuration for the motor vehicle, comprising:

sensors transmitting sensor signals wirelessly;

a transmission control device mounted at the transmission housing for receiving and evaluating the sensor signals transmitted by said sensors;

an engine control device;

a communication channel interconnecting said transmission control device and said engine control device; and

electrohydraulic pressure control valves having coils integrated into said transmission control device, said control valves shifting the transmission and actuating the friction elements in the transmission, wherein said sensors transmitting sensor signals wirelessly are disposed inside the transmission housing, and including a transponder being connected to said sensors and being supplied with power wireless by high-frequency oscillations, and a receiver in said transmission control device for receiving measurement values from said transponder wirelessly on request.

5. In a motor vehicle with an automatic transmission being accommodated in a housing and having friction elements, a control configuration for the motor vehicle, comprising:

sensors transmitting sensor signals wirelessly;

a transmission control device mounted at the transmission housing for receiving and evaluating the sensor signals transmitted by said sensors;

an engine control device;

a communication channel interconnecting said transmission control device and said engine control device; and

electrohydraulic pressure control valves having coils integrated into said transmission control device, said control valves shifting the transmission and actuating the friction elements in the transmission, wherein said sensors transmitting sensor signals wirelessly include a semiconductor pressure sensor disposed inside the transmission housing, and including a transponder connected to said pressure sensor, and a receiver disposed in said transmission control device for receiving pressure measurement values from said transponder wirelessly on request.