A stressed member engine is a vehicle engine used as an active structural element of the chassis to transmit forces and torques, rather than being passively contained by the chassis with anti-vibration mounts. Automotive engineers use the method for weight reduction and mass centralization in vehicles. Applications are found in several vehicles where mass reduction is critical for performance reasons, usually after several iterations of conventional frame/chassis designs have been employed.
Harley-Davidson Model W with structural tubes bolted directly to engine case to complete the frame triangleThe Lotus 49 suspension is bolted directly to the drivetrainA frameless Fordson Model F tractor
Stressed member engines was patented in 1900 by Joah ("John") Carver Phelon and his nephew Harry Rayner.[1] and were pioneered at least as early as the 1916 Harley-Davidson 8-valve racer, and incorporated in the production Harley-Davidson Model W by 1919.[2] The technique was developed in the 20th century by Vincent and others, and by the end of the century was common feature of chassis built by Ducati, BMW and others. In 2019, KTM Duke 790's engine is used as a stressed member.
The 1967 Lotus 49 is credited for establishing a solution copied by "everyone" in Formula One.[3] This requirement is cited as a reason the rules committee changed from an inline-four to a V-6 configuration for the 2014 Formula One season.[4]
Production automobilesedit
The limited-production De Tomaso Vallelunga mid-engine car prototyped in 1963 used the engine as a stressed member.[5]
In GM's Chevrolet Bolt and Tesla Motors Model S and Roadster electric cars, the battery pack is a stressed member to increase rigidity.[6][7]
Tractorsedit
The Fordson tractor Model F, designed during World War I, eliminated the frame to reduce cost of materials and assembly, and was probably influenced by the similar design of the 1913 Wallis Cub.[8]
Referencesedit
^ianchadwick.com Ian Chadwick 1901 (Retrieved 28 October 2006)
^Rafferty, Tod (2001). Illustrated Directory of Harley-Davidson Motorcycles. MotorBooks International. pp. 59, 64–67. ISBN978-0-7603-1126-4.
^John Krewson (May 2013), "Fast, Present, Future: 1967 Lotus 49 vs. 2013 Corvette ZR1", Road and Track, retrieved 2013-06-13
^Team bosses agree on 1.6l V6 for 2014, f1technical.net, June 22, 2011
^"De Tomaso Vallelunga: Just the beginning for Alexjandro", European Car, February 2009
^Frank Markus (December 2012), "First Drive: 2012 Tesla Model S", Motor Trend
^Steve E. Tice (2008), Plug-in Electric Car Buyers Buying Guide (Version 1.1 ed.), Optimal Vehicle Technologies
^Klancher, Lee; Leffingwell, Randy; Morland, Andrew; Pripps, Robert N. (2003), Farm Tractors: John Deere, Farmall, Ford & Fordson, Crestline Imprints, p. 200, ISBN978-0-7603-1776-1
January 01, 1970
stressed, member, engine, stressed, member, engine, vehicle, engine, used, active, structural, element, chassis, transmit, forces, torques, rather, than, being, passively, contained, chassis, with, anti, vibration, mounts, automotive, engineers, method, weight. A stressed member engine is a vehicle engine used as an active structural element of the chassis to transmit forces and torques rather than being passively contained by the chassis with anti vibration mounts Automotive engineers use the method for weight reduction and mass centralization in vehicles Applications are found in several vehicles where mass reduction is critical for performance reasons usually after several iterations of conventional frame chassis designs have been employed Contents 1 Applications 1 1 Motorcycles 1 2 Automobiles 1 2 1 Race cars 1 2 2 Production automobiles 1 3 Tractors 2 ReferencesApplications edit nbsp Harley Davidson Model W with structural tubes bolted directly to engine case to complete the frame triangle nbsp The Lotus 49 suspension is bolted directly to the drivetrain nbsp A frameless Fordson Model F tractor Motorcycles edit Further information Motorcycle frame Engine as a stressed member Stressed member engines was patented in 1900 by Joah John Carver Phelon and his nephew Harry Rayner 1 and were pioneered at least as early as the 1916 Harley Davidson 8 valve racer and incorporated in the production Harley Davidson Model W by 1919 2 The technique was developed in the 20th century by Vincent and others and by the end of the century was common feature of chassis built by Ducati BMW and others In 2019 KTM Duke 790 s engine is used as a stressed member Automobiles edit Many mid engine sport cars example needed have used stressed engine design Race cars edit The 1967 Lotus 49 is credited for establishing a solution copied by everyone in Formula One 3 This requirement is cited as a reason the rules committee changed from an inline four to a V 6 configuration for the 2014 Formula One season 4 Production automobiles edit The limited production De Tomaso Vallelunga mid engine car prototyped in 1963 used the engine as a stressed member 5 In GM s Chevrolet Bolt and Tesla Motors Model S and Roadster electric cars the battery pack is a stressed member to increase rigidity 6 7 Tractors edit The Fordson tractor Model F designed during World War I eliminated the frame to reduce cost of materials and assembly and was probably influenced by the similar design of the 1913 Wallis Cub 8 References edit ianchadwick com Ian Chadwick 1901 Retrieved 28 October 2006 Rafferty Tod 2001 Illustrated Directory of Harley Davidson Motorcycles MotorBooks International pp 59 64 67 ISBN 978 0 7603 1126 4 John Krewson May 2013 Fast Present Future 1967 Lotus 49 vs 2013 Corvette ZR1 Road and Track retrieved 2013 06 13 Team bosses agree on 1 6l V6 for 2014 f1technical net June 22 2011 De Tomaso Vallelunga Just the beginning for Alexjandro European Car February 2009 Frank Markus December 2012 First Drive 2012 Tesla Model S Motor Trend Steve E Tice 2008 Plug in Electric Car Buyers Buying Guide Version 1 1 ed Optimal Vehicle Technologies Klancher Lee Leffingwell Randy Morland Andrew Pripps Robert N 2003 Farm Tractors John Deere Farmall Ford amp Fordson Crestline Imprints p 200 ISBN 978 0 7603 1776 1 Retrieved from https en wikipedia org w index php title Stressed member engine amp oldid 981644523, wikipedia, wiki, book, books, library,
