Adabatically compressed air as a substitute for mechanical transmission in motor vehicles
- Publisher
- Elsevier Science
- Year
- 1910
- Tongue
- English
- Weight
- 54 KB
- Volume
- 169
- Category
- Article
- ISSN
- 0016-0032
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✦ Synopsis
CURRt~NT TOPICS
AI)IABATICALI.Y Ct)~\I['RESSt2t) AIR AS A 8UBSTITUTE
FOR MECHANICAL "I'ICANS.\IISSI(.)N IN MOTOR VE-HICLES.--The adiabatic compression and expansion of air is compared with the isothcrmic, theoretically hy diagram and by well-kuown fornmla, in order to call attention to the considerable advantage of the former method with regard to the work utilized. 111 this application the maximmn pressure is limited to 15 atmospheres, the temperature of which is 363 ° C., and the compressed air nearly reaches that tempera~ ure in the receiver. This application is applied to a petroleum motor car to give the lnotor couple, on transmission, the value of that of a steam engine, without employing the usual clutches and speed changing gear. The petroleum motor acts through an epicycloidal train differentially upon the transmission and an air compressor which progressively brakes the exterior portion of the train. The air from the compressor is utilized immediately in a motor and counterbalances the couple of resistance of the apparatus. As the speed increases the effect of the air diminishes until it becomes nil and the car is propelled directly h 3 the petrolenm motor. (C. Hautier, Comptes Reltd~ts, 34-J49.