The Sauk Centre herald. (Sauk Centre, Stearns County, Minn.) 1886-current, 1926-07-15

cOOllng system. All CneSe Improve
ments increase the operating effic-
iency of theO ldsmobile and prolong
its engine life.
The use of the harmonic balancer
on the series "E" Oldsmobile is also
announced. This balancer, a devel-
opment by General Motors, counter
acts engine vibration.
Chromium plating, recently an
nounced as an exclusive Oldsmobile
method of plating, is also among the
prominent features of this car. Chro-
MUM plating has more durable,
more corrosion-proof, harder, and
more permanent-lustre surface than
former types of plating. This fea-
ture has recently been the point of
considerable commentator through
out the leading technical publications
of the automotive industry as rad
ical advancement in automotive meth
DDS.
A marked advance in motor car
design evidences it self in Uldsmobile's
new crankcase ventilation system.
With this new feature of design Odds
mobile engineers have been success
full in combating one of the oldes!
problems of the industry,-crank
case dilution.
In all internal combustion engines
water is formed by condensation.
Cold engines do not burn all of the
fuel on starting. This water and
uunburned liquid fuel pass into the
crankcase dilution. Crankcase dilu-
ton is injurious to the lubricating
qualities of the oil and result in
shorter engine life.
In this new series "E" Oldsmobile
one third of the air that passes
through the carburetor on the right
side of the engine is drawn in through
breather port on the left side of the
crankcase. This air circulate
through the crankcase and takes off
with it the unburned fuel and water
in the crankcase and in that manner
eliminates excessive dilution with re-
sulting longer useful life of the oil
and longer engine life. A part of
the oil vapor in the crankcase is
drawn into the combustion chambers
and improves the fabrication of the
tops of pistons, valves and upper CYL
inder walls.
Road dust and dirt from an abras-
i've element in engines and conse-
quent wear. The new Oldsmobile has
dual air cleaning. The master al,
cleaner is back Of the carburetor and
cleans two-thirds of the air as it en-
tiers the carburetor direct, while the
second air cleanser is on the breather
port in connection with crankcase
ventilation. Both cleaners are of the
centrifugal type.
The new series Oldsmobile has
"two-way" cooling system and fol-
lows new practice in design and op-
Grafton. This new cooling system en-
bodies the best features of the two
accepted manners of cooling,-pres-
sure type cooling and thermo-siphon
type cooling. Even temperature con-
troll of cooling has been a problem of
automotive engineers for some time.
Valves, valve seats, spark plugs and
combustion chambers heat faster than
do cylinder walls and not until this
new Oldsmobile design cooling system
was announced had any successful
methods of cooling the points Of
greatest heat sufficiently, without
cooling the cylinder walls too much
for efficient operation, been develop
ed. At the points where greatest
heat is generated, pressure-driven
water is circulated through a mani
fold type passage. This full flow of
water about the cylinders would cool
them too much. Therefore the circu-
lation of water about the cylinders
has been restricted and retarded by
the use of thermo-siphon type action,
in which the rate of circulation is
largely governed by the reaction of
the heat to be dissipated upon the
cooling water. These combined types
of cooling in the "two-way" system
cool efficiently the parts Of greatest
heat and maintains sufficient warmth
about the cylider walls for even and
efficient operating temperature
throughout the entire engine. This
advanced type of cooling contributes
materially to added power, longer life
and smoother performance of the new
series Oldsmobile.
A new high, velocity, hot section
manifold is a part of the improved
design in the new Oldsmobile. This
design retains the high velocity given
the incoming gases as they leave the
carburetor and pass on into the COM
bustion chambers. An improved
jacketing Of the inlet manifold by the
heated exhaust manifold is affected in
the vertical section above the carbure-
tor and assists in more complete vap-
orization of the fuel. The inlet man.
fold, being above the exhaust man
fold and heated byt it, retained the