From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Article from 'Automotive Industries' magazine detailing the Dodge six-cylinder, four-stroke Diesel engine.
| Identifier | ExFiles\Box 133\3\ scan0017 | |
| Date | 3rd December 1938 | |
| 740 Diesel Engine DODGE TRUCK DIVISION OF CHRYSLER CORPORATION immediately preceding the opening of the New York national truck show announced a Dodge-built Diesel engine for its 3-ton trucks. This engine, we learn, is the result of several years' development work on the part of Chrysler Corporation's engineering laboratories. The new engine is a full compression-ignition Diesel of 331 cu. in. piston displacement, with a torque rating of 226 lb-ft. at 1000 r.p.m. and a power rating of 95 hp. at 2600 r.p.m. A compression ratio of 14.5 is used. The engine is of the familiar six-cylinder four-stroke-cycle type, of 3¾-in. bore and 5-in. stroke. Its general dimensions, mounting, and crankcase structure are identical with those of the gasoline engine used for Dodge 3-ton trucks, which permits notable economies in engine production and in connection with the installation of the engines in the chassis. Its design embodies such well-known features as full-length water jackets, valve-seat inserts, a by-pass thermostat, and a chain-driven camshaft. The cylinder block is cast of nickel-molybdenum iron. Tin-plated, steel-strut Autothermic pistons are employed, which permit of close piston fits. Pistons are 5 15/32 in. long, not including the height of the displacer cast integral with the top. Three compression and two oil rings are used, the top ring being ⅝ in. below the top of the piston, so that it is always in contact with the watercooled portion of the cylinder wall. To prevent scuffing during the break-in period, the rings are tin-plated. There are seven precision-type replaceable main bearings in the engine, of 3-in. diameter, giving a total projected bearing surface of 36.89 sq. in. The bearing material is copper-lead, and the crankshaft journals are induction-hardened. Connecting rods have a center-to-center length of 10 7/16 in. and are provided with a bronze bushing for the 1⅜-in. piston-pin, and replaceable copper-lead crankpin bearings of 2 5/16 in. diameter by 1 7/16 in. length. Full-pressure lubrication is supplied to all main, lower-connecting-rod, and camshaft bearings, the valve-operating mechanism, and the fuel-injection pump. Oil temperatures are kept down by an oil gallery at the top of the crankcase immediately below the bottom of the cylinder jacket, and by a large oil pan (14 quarts capacity). An oil filter of the replaceable-element type is standard equipment. The electrical system operates at Dodge six-cylinder four-stroke Diesel engine of 95 hp. December 3, 1938 Automotive Industries | ||