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 detailing the features and specifications of the new R.N. Diesel Engine.
| Identifier | ExFiles\Box 133\3\ scan0111 | |
| Date | 6th February 1940 guessed | |
| NEW R.N. DIESEL ENGINE Russell Newbery & Co., Altrincham, have introduced a range of engines with new framing and a higher cylinder output Showing C-frame and through bolt construction of the new engine THE makers of the well-known R.N. diesel engine, Russell Newbery & Co., of Altrincham, Cheshire, have recently introduced a new range of engines (known as the E type) of larger size and greater power than those at present being manufactured. A marine version of this engine, with the firm's own fluid-operated reverse-reduction gear, is included in the range, together with a diesel-generating set suitable for ship work. Running at a normal speed of 1,000 r.p.m., the engine develops a normal output of 16 B.H.P. per line, B.E.S.A. rating; The bore and stroke are 5⅛ in. and 7¼ in. respectively. The b.m.e.p. is 85 lb. per sq. in. and the piston speed at 1,000 r.p.m. is 1,275 ft. The makers state that they can comfortably obtain a fuel consumption of 0.418 lb. per B.H.P. per hour at full load. The lubricating oil consumption works out at 0.0035 pint per B.H.P. per hour. The view of the new engine above, with the front covers removed, gives an internal view of the crankcase and cylinder block, the latter containing the individual C.A.V. fuel pumps and governing mechanism. The most interesting feature of the engine is the crankcase construction. The crankcase is of the braced “C” type construction, with the special provision of long through bolts with supporting columns fixed adjacent to each bearing and running through to the cylinder block; this arrangement relieves the tensile stresses imposed on the structure due to combustion. It also enables the crankshaft, pistons, and connecting rods to be withdrawn from the side of the engine, thus reducing the headroom required for overhaul. The crankcase, cylinder block, heads, and manifolds need not be disturbed in any way, which is an advantage of real practical importance. A large inspection door covers the whole of the open side of the crankcase and by removal of this single door easy access is given to all the working parts of the crank chamber. The smaller doors seen in the illustration give access to the separate-unit type fuel pumps and governor gear; C.A.V. injection pumps are fitted as standard on all engines of this range, incidentally. An easy method of adjusting the injection to each cylinder is provided, while a priming lever enables the fuel to be pumped to each atomiser prior to starting, if desired. The atomisers are of the pintle or self-cleaning, type and are accessibly placed. The cylinder block is fitted with removable wet liners which are kept at the required temperature by special water feeds, the bulk of the cooling water being fed directly to the exhaust valve seats and stems. The lubricating oil pump is of the submerged gearwheel type and the engine sump incorporates a primary gauze filter, while a secondary filter of the duplex type is fitted on the pressure side of the pump. Incorporated in this is a relief valve which ensures a continuous supply of lubricating oil to all parts even should the strainer become choked by lack of attention.—A lubricating oil cooler is also embodied in the circuit. The cylinder heads are of the well-known R.N. patented design, giving a high degree of turbulence. The valves are positioned horizontally and can easily be removed without disturbing any pipe connections or removing the heads. Aluminium silicon alloy pistons of a special design are used and the valve-operating gear works in taper roller bearings. The whole of the valve assembly is enclosed by easily removable cover plates. The present range of this interesting new R.N. design covers three, four, five, and six-cylinder engines. | ||