Popular Post kscarbel Posted July 22, 2013 Popular Post Share Posted July 22, 2013 The Mack gas turbine was the most powerful and promising of them all. And Mack chose two superb partners to work with.The GT-601 gas turbine tested by Mack Trucks was designed and produced by Industrial Turbines International (ITI), a partnership between Garrett AiResearch, Mack Trucks and KHD (Klöckner Humboldt Deutz AG).The joint venture began a program in 1972 to develop a 450-638 horsepower (335-476 kW) power range of gas turbine engines specifically designed for heavy trucks. This effort resulted in the GT-601, a free-turbine all-metal engine with a fixed boundary recuperator. The GT-601 gas turbine eliminates winterizing requirements, operates without vibration, with less noise and favorable torque characteristics, and is air cooled. For density, weight and reliability, the GT-601 was far ahead of the diesel engine. However in typical on-road applications, U.S. truck weight (80,000lb/36.3 metric tons) and size regulations don’t allow the efficient use of the 550 horsepower GT-601. Only the use of larger trucks (97,000 pounds/44 metric tons) will allow the GT-601 to yield economic savings.Several engines were built during the program and tested extensively. More than 7,000 hours of operation were accumulated, including more than 2,000 hours in highway trucks. These engines demonstrated the feasibility of fixed boundary recuperators along with superior torque compared to diesels of similar rated power, easy cold starting, and the ability to survive limited foreign object ingestion.'"In 1979, a GT601 was experimentally fitted in a Mack R-795S tractor, and tested thru 1980.In 1980, GT-601s were installed in a 1979 Hayward-production Cruise-Liner (WS-760LST) and Super-Liner (RWS-760LST). Mack installed the engines in Allentown, and in Phoenix, Arizona on the property of the local Mack distributor where the IMI joint venture rented a building. Phoenix was the home of Garrett AiResearch.The two trucks made an appearance at the 1982 Gas Turbine Conference in Wembley, UK and operated thru 1986. I don’t know how many Mack gas turbine test beds were built. I heard there was an F-model, but I never saw it. And while I’ve never heard people speak of a RL/RS Value-Liner testbed, I did witness one being retrofitted with a GT-601 gas turbine. I regret more photographs of this exciting chapter of Mack history are not available. 7 Quote Link to comment Share on other sites More sharing options...
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