The encyclopædia britannica; a dictionary of arts, sciences, literature and general information . d. When the piston Bmakes its suction stroke, air passes from the atmosphere by the passage K through the valve F, which it opens pressure falls within the passage K, and a spurt of petrol passesby the jet Gl, separate air at the same time passing by the passageKl round the jet. The petrol breaks up into spray by impactagainst the walls of the passage K, and then it vaporizes and passesinto the cylinder A as an inflammable mixture. When the piston Breturns it compresses the charg
The encyclopædia britannica; a dictionary of arts, sciences, literature and general information . d. When the piston Bmakes its suction stroke, air passes from the atmosphere by the passage K through the valve F, which it opens pressure falls within the passage K, and a spurt of petrol passesby the jet Gl, separate air at the same time passing by the passageKl round the jet. The petrol breaks up into spray by impactagainst the walls of the passage K, and then it vaporizes and passesinto the cylinder A as an inflammable mixture. When the piston Breturns it compresses the charge into a, and upon compression theincandescent igniter tube H fires the charge. H is a short platinumtube, which is always open to the compression space It is renderedincandescent by the burner I, fed with petrol from the pipe supplyingthe vaporizer. The open incandescent tube is found to act wellfor small engines, and it docs not ignite the charge until the com-pression takes place, because the inflammable mixture cannot comeinto contact with the hot part till it is forced up the tube by the. Fig. 1. compression. The engine is started by giving the crank-shaft asmart turn round by means of a detachable handle. The exhaust isalone actuated from the valve shaft. The shaft Q is operated bypinion and a spur-wheel Q1 at half the rate of the crank-shaft. Thegoverning is accomplished by cutting out explosions as with the gasengine, but the governor operates by preventing the exhaust valvefrom opening, so that no charge is discharged from the cylinder,and therefore no charge is drawn in. The cam R operates the exhaustvalve, the levers shown arc so controlled by the governor (not shown)that the knife edge S is pressed out when speed is too high, andcannot engage the recess T until it falls. The engine has a waterjacket V, through which water is circulated. Cooling devices areused to economize water. Bcnz of Mannheim followed close on the work of Daimler,and in France Panhard and Levas
Size: 1268px × 1971px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookidencyclopdiab, bookyear1910
