Device for controlled braking of a wheel train with temperature comparison

• US 5,217,282 A
• Filed: 02/05/1992
• Issued: 06/08/1993
• Est. Priority Date: 02/06/1991
• Status: Expired due to Term

• Current Assignee: Messier-Bugatti-Dowty
• Original Assignee: Messier-Bugatti (Safran SA)
• Inventors: Guichard, Jean
• Primary Examiner(s): Oberleitner, Robert J.
• Assistant Examiner(s): Muratori, Alfred
• Application Number:
  US07/831,676
• Time in Patent Office: 489 Days
• Field of Search: 303/7, 303/20, 303/9.62, 303/9.73, 303/15, 244/110 A, 244/110 H, 244/111, 188/181 T, 188/264 R, 188/382
• US Class Current: 303/9.73
• CPC Class Codes: B60T 13/66 Electrical control in fluid-pressure brake systems
• CPC Class Codes: B60T 17/18 Safety devices; Monitoring
• CPC Class Codes: B60T 8/00 Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force by changing number of effective brake cylinders in power brake systems B60T17/10
• CPC Class Codes: F16D 2066/001 Temperature
• CPC Class Codes: F16D 66/00 Arrangements for monitoring working conditions, e.g. wear, temperature

Abstract

A device for controlling the braking of a wheel train is disclosed and includes an actuating mechanism for alternating actuating symmetrically disposed groups of wheel brakes, temperature sensors disposed or at least one wheel brake in each of the groups of wheel brakes with the control mechanism actuating the coolest group of wheel brakes several times when the temperature difference between the groups of wheel brakes reaches a threshold temperature difference and for actuating the groups of wheel brakes cyclically so long as the threshold temperature difference is not reached.

Claims

1. A device for controlled braking of a wheel train, the device including means for actuating symmetrically-disposed groups of wheel brakes in alternation, temperature sensors disposed on at least pne wheel brake in each group of wheel brakes, means for measuring a temperature difference between the groups of wheel brakes, and means for actuating several times in succession the coolest group of wheel brakes when the temperature difference reaches a threshold temperature difference and for actuating the groups of wheel brakes cyclically so long as the threshold temperature difference is not reached.

2. A device for controlled braking of a wheel train, the device including means for actuating symmetrically-disposed groups of wheel brakes in alternation, means for performing anticipated temperature measurement of each group of wheel brakes, means for measuring a temperature difference between the groups of wheel brakes, and means for actuating several times in succession the coolest group of wheel brakes when the temperature difference reaches a threshold temperature difference, and for actuating the groups of wheel brakes cyclically so long as the threshold temperature difference is not reached.

3. A device for controlled braking according to claim 2, wherein the means for performing anticipated temperature measurements comprise means for detecting the torque provided by each group of wheel brakes and means for calculating the energy dissipated in each group of wheel brakes as a function of the torque provided.