All About Engines
Forfatter: Edward Cressy
År: 1918
Forlag: Cassell and Company, LTD
Sted: London, New York, Toronto and Melbourne
Sider: 352
UDK: 621 1
With a coloured Frontispiece, and 182 halftone Illustrations and Diagrams.
Søgning i bogen
Den bedste måde at søge i bogen er ved at downloade PDF'en og søge i den.
Derved får du fremhævet ordene visuelt direkte på billedet af siden.
Digitaliseret bog
Bogens tekst er maskinlæst, så der kan være en del fejl og mangler.
The Petrol Motor 209
Apart from this contrivance there is no differ-
ence in principle between gas and petrol engines;
but in compactness and lightness of construction they
are c o m -
pletely unlike.
Generally,
too, the petrol
engine is
wholly en-
closed in order
to exclude
dust and dirt.
A general idea
of the ar-
rangement of
parts and
their interde-
pendence will
be obtained
from Fig. 118,
which shows
the position
of the piston
and valves at
a certain stage
of the Otto-
Fig. 118.—Diagram of petrol motor
cycle. It will be observed that the cylinder is water-
jacketed in order to prevent the temperature rising
beyond about 185° Fahr. The water for this purpose
may circulate naturally by the heating effect of the
cylinders, or it may be pumped through. After leaving
o