New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1911-07-02
DANISH 'CHUCC|NC' MOTOR
New Columbia Cars to Have the
Knight Engine.
SLIDING SLEEVE VALVES
o.o Third of the Moving Parts
Are Done Away with
in New Motor

.,,.,,ncoment was made yester-
Oi'V'a' .ho columbia Motor Car Com
Gay "'~ sai,ion 10 its regular poppet
Pan'' - will bring out new high
,,ou,ered car employing the hhlsh' siui"s
',on,.e valve motor that is being useo SUI
o.ssf,,llv abroad by the Enghsh Dal'''ie''
ro,bard Mercedes. Minerva, ltallah Dam
IA and Rover cars Work upon TINS
..,..,, production has been In progress
- IL. tvvn wears. and is now offered
~ ,av, columbia cars following long
rsriod OF trying out and experiment
,rna Columbia knight motor is OF the
.-.,...,.ole tyne. with cylinders cast IN
rsirs AZ by 5ls inches. The a. l.. A. NJ
80. sj,,ilar 10 the British Club rat
a. q horsepower. The power developed
-. ,ho Knight motor. however. is said 10
-, N horsepower without motor racing
-. ,be maximum power realized APP
nrhaches s. horsepower. WINE 'ie ino'o'
<ouovs the general lines OF suceessl"' con-
,annoraries abroad, IL is "A Coiuthold P'o
auction being designed Icy Charles IL
pe6die chief engineer Of the Coluihoia
Motor Car Company. in consultation WIN
= Y knight. inventor of the motor ana
HE eneiueering staff while Mr. knight
himself has given the benefit of his expert
ence in the preparation of the design
cylinders have hoted on heads made gas
,gbt. and the heads are depressed ana
contain two spark plugs for the Bosch d0u-
,le system. The sleeves, Of which there are
two for each cylinder. are made OF S"eu-
isb gray iron, and cylinders, sleeves rings
and pistons are all cast abroad ana lh-
ported. Flown,
The sleeves are reciprocated 10 perform
.ba va,ve functions by connecting RODS OF
short length attached 10 a miniature CRANK
sraft which IS driven from the main crank
shaft at half speed by gear type or CoVeh-
,rv silent chain. There are no tappet OF
mushroom valves. no cam shafts, nor cam
rorArs nush rods or train of driving en-
roeshed gears in front. II is asserted that
the number Of parts is thus reduced by one
third.
Inside the cylinder wall is, first an end
less sleeve. which has openings on each
side. These are in the form Of wide SLOTS
and are located close to the top OF the
sleeves. Inside the first sleeve is the Sec
ond sleeve. also endless, and having IKE
slots on both the right and left sides On
the suction stroke Of the motor the rlshI
hand slots of the first sleeve and the sec
ond sleeve come into juxtaposition one WIN
the other. or register perfectly one over the
other. exposing a large opening through
both the outside sleeve and the inner
sleeve so that fresh gas may enter, just
,s il enters through the aperture Of the lift
Of mushroom type valve.
When the compression stroke is begun
these sleeves slide, one up and one down.
SO that the slots are no longer coincident
and are out Of register, there now
Icing no way for the fresh gas 10 escape.
THE COMPRESSION OF the charge IS accom-
rlisred and. the piston rising TO the top
of the cylinder. the spark is timed TO occur
and tie explosion or power stroke takes
place. The piston now being at the bottom
of the firing stroke. the left hand slots OF
the sleeves come into juxtaposition or reg
lister each with the other, leaving a large
exit for the now spent Sgases to escape
The four cycles OF operation are thus ex-
planned and the function Of the sleeves Is
described
The advantages claimed for this valve
are first. the fact that the en-
trance and exit openings for the gases are
twice the size OF gas passages allowed in
the most literally designed "T-head' tap
let type motors and nearly three times the
size OF gas passages in "L-type" or valve
in head motors.
The lubncatng system is interesting, since
il marks the further development Of what
has come to be known in the trade press
as the Columbia movable dam system. Lo-
Gated transversely with the fltering screen
of the lower crank case are four troughs
hinged on buss shaft and connected with
the throttle. With the opening and clos
ing Of the throttle these troughs are thus
automatically raised or lowered
When the throttle is opened and the
trOughs are raised the connecting rod
scoops dip deep into the troughs, and the
troughs contain d greater amount of oil
before OVERLOOKING. When the work is
light the closed throttle lowers chc height
Of the troughs. 80 that they overflow more
quickly and the scoops dip but lightly into
the troughs and a corresponding less
amount of oil is splashed.
The bodies are all flush sided and vesti-
huled with fore doors. while all The doors
are fGI prouortioned. the wheel base allow
ing for full sized doors. without lower rear
corners being angularly cut.