DISCUSSION. INTERNAL COMBUSTION ENGINES FOR MARINE PURPOSES
Minutes of the Proceedings of the Institution of Civil Engineers
3878 he built a gas-engine which gave the diagram shown in Fig. D ; the engine was supplied with a compressing-pump, taking in gas and air, and compressing the gas and air into a reservoir. The Downloaded by  on [12/09/16]. Copyright © ICE Publishing, all rights reserved. Proceedings.] FOR XIBRINE PURPOSES. K 2 rk. Dugald Downloaded by  on [12/09/16]. Copyright © ICE Publishing, all rights reserved. 132 DISCUSSIOS os ISTEBSAL-CO,\IBUSTION ESGISES [Minutes of . Mr.Dugald usual cycle, enough
... sual cycle, enough gas and air had to be pumped into the reservoir to clear out the products of combustion formed therein. The consequence was that in his next attempt to make an engine operating upon the cycle which the Author had described, he made LIP his mind to omit the reservoir, because before the speed picked up again, if there was any load on the engine, the engine often stopped. In the engine of 1886 a,nd 1887, which he had had the honour of describing1 to the Institution in 1896, he arranged a pump a,t the side of the motor-cylinder with the minimum of clearance between the pump and the motor, the pump being so arranged, in regard to its crank-angle, that when the motor-piston began to more forward communication was made through a short port of s n d l capacity, with the result that the pump forced the charge into the motorcylinder just as it was compressed, without any intermediate reservoir. That method had been applied also by Mr. Atkinson, now of Messrs. Crossley Bros. and then of the British Gas-Engine Company, and Mr. Clerk thought that Mr. Atkinson and himself must have built engines of that type numbering in the a.ggregate about forty or fifty-engines that were actually in use, giving fairly good results, but also giving trouble from the delicacy of the ignition-adjust-Downloaded by  on [12/09/16].