Evening capital news. (Boise, Idaho) 1901-1927, 1914-06-14
WONDERFUL new
ENGINE FOR THE
AUTO IS EVOLVED
Motor Recently Constructed
at Philadelphia Requires
Practically No Adjust
ments Says Expert.

Ledger. Motorcar builders have been
constantly alert for anything that
would add to the efficiency and econ
omy of operation of their product or
reduce It's cost of manufacture. Sew
eral of the principles of construction
In automobile manufacturing are COM
monty used in engineering practice
While some were originated and in
vented as matter of necessity and are
alone peculiar to automobiles. Trans
missions were designed five or six
years ago and are in several instances
still used with few changes in new
model machines, giving satisfactory
service. And so it is with several
other features of the ordinary car;
they can be little changed and still be
applicable to the present idea Of what
an automobile should be. They have
practically reached the perfection of
engineering practice in the present
scheme of construction.
Motor Design Factor.
There is, however, at hand a period
in the motorcar industry where the
public is looking for something diff
ferent, and the keynote of that differ
ence is economy" Just how it Is to
be had no one seems to know precisely,
but the two big factors to be dealt with
are the operation OF the power plant
and the tire problem. Whether tires
Will be made of something better or
cheaper than rubber remains to be
seen. The question of economy of
operation of the engine is receiving
more attention today than ever be-
fore. Here lies the big field.
There is unconsciously and yet surely
demand coming from the buyer of
motorcars in the future for something
in the way of power plant far more
economical in the use of fuel, more sim
plified and one requiring less attention
on the part of the owner Since the
inception of the automobile thousands
of owners and others have become ia
miliar with engines and their construc-
ton, they have become more educated
along these lines and are indeed in
terested students, watching carefully
engineering progress in this direction.
The MonovaIve Motor.
Another new development Is called
the ''monovalve motor" because 1t has
single rotating unit. or valve, entirely
controlling the power impulses OF the
engine. The strong points of the motor
are its external simplicity and neat
ness of design. The magnetic is mount
ed on the side of the engine, with the
silent chain driving 1t and the rotary
valve. This constitutes the entire
power controlling mechanism of the
engine. The rotary valve revolyes
in the same direction as the fly
wheel AS the valve rotates the recess
or flat portion uncovers and covers the
intake and exhaust parts in their proper
sequence with absolute precision. The
timing of the valve is secured by ad-
justment of the position of the
sprocket on the end of the valve itself
Once properly timed it never requires
changing.
No Valves to Grind.
The valve seating requires practically
no attention during the life of the mo-
tor. Compression is maintained and
compensation for any small amount of
wear Is secured automatically by the
inner sleeve, which has sliding fit in
the cylinder, contact with the rotary
valve being insured by the reaction of
the force Of explosion within the cylin-
der. Therefore, compression itself seals
the valve.
SILENCE OF Operation.
The motor is so extremely simple, the
moving and stationary parts so few,
that 1t is nearly silent when running
In the common type of "poppet valve
motor the blow struck upon the seat
by the valves and the cams striking
the push rods or valve lifts tend to
make the motor noisy.
Poppet valve motor builders have, in
their recent designs, endeavored to Sc
cure a more silent motor by inclosing
the multitude of small working parts
This helps the situation somewhat, but
makes the engines less accessible for
Its necessary adjustment and repairs.
What the owner wants is an engine
which needs no adjustment Sliding
sleeve type motors are quiet in their
operation. but they usually have a
large number of small working parts
necessary to operate the sleeves In
the monovalve motor there are no small
parts to be adjusted or inclosed
Cooling and fabrication.
No water pump is required in cooling
the motor. thermosyphon system being
used. with induced water circulation
through the center of the rotary valve.
fabrication of the motor is worked
out in a simple manner, there being no
oil pipes anywhere on the engine. The
rotary valve Is fabricated by mixing
the lubricating oil with the gasoline
and passing the mixture through the
carburetor in the regular way.
This feature has distinct advantage
over all other types of oiling systems,
In that 1t furnishes TO the engine the
proper amount of oil required at any
given engine speed. Also. as long as
the engine is running 1t must neces-
sarily be fabricated. Where separate
oilers or supply tanks are used the
operator must be depended upon to In
sure fabrication. In this system, when
the lubricating oil is exhausted, 50 also
is the fusl, and the engine stops There