rk until ithas conducted a great many more tests continuing over alengthy period. The essential difference in design between this singlesleeve valve engine and the conventional poppet valvetype lies in the valve and valve actuating mechanism;the parts are not necessarily different. The sleeve valve… … Fig. 3—Sectional view of an 80 x 1.30 m,.m.engine embodying the Wallace valve ing motion is imparted to the sleeve valve so that jointson it travel in a more or less elliptical path, With the four-stroke cycle engine the sleeve valve isdriven at half engine speed and the ports thereon arearranged…
Automobiles · Aeronautics
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