Design and Testing of an Automatic Tire Inflation System for Drive Axles on Class 8 Tractors Southwest Research Institute

Format:

Conference/Event

Author/Creator:

Bradley, John A., author.

Conference Name:

1996 SAE International Truck and Bus Meeting and Exposition (1996-10-14 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1996

Summary:

An Automatic Tire Inflation System (ATIS) specifically designed for commercial use on trailer axles is currently being installed and utilized successfully by trucking companies, the military and owner/operators throughout the U.S.A need exists for an ATIS specifically designed for the drive axles of Class 8 over-the- road tractors. The addition of an ATIS for drive axles will expand automatic tire monitoring capability to all heavily loaded tires of the over-the-road truck/trailer rig. An ATIS for drive axles has been designed, fabricated and tested. Testing and evaluation of the prototype ATIS drive axle system indicates the system can be successfully installed on a typical tractor rig and operated for an extended period without problems. The testing included a 50,000 mile evaluation of the ATIS installed in a laboratory test fixture. The test fixture used stock axle parts and operated at 65 MPH. Environmental testing was conducted at temperatures ranging from -20 to +200 degrees F. A 100,000 mile (162,000 km) road test will be conducted by Southwest Research over a specified road course to complete the evaluation of the DRAXIS unit. The road test will be conducted after completion of laboratory testing.The commercial drive axle ATIS differs from the current military CTIS design in that the entire system is installed external of the hub and outside the bearing area and is designed to operate at current highway speeds. The commercial ATIS requires only removal of the axle shaft and hub/brake drum assembly and spreading of the brake shoes for installation. The bearings, seal and ABS equipment remain in or attached to the hub and are not disturbed.Design Features include:

Notes:

Vendor supplied data

Publisher Number:

962213

Access Restriction:

Restricted for use by site license