Armstrong

8th November 1935, Page 162

8th November 1935

Page 162

Page 162, 8th November 1935 — Armstrong

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Saurer

Small Cylinder Dimensions Feature of New Six-c9lindered Engine, Four, Six and Eight-wheeled Oilers

Stand 81

CONSMERABLE interest was 1.---aroused during the past year by the introduction of the Armstrong-Saurer Dual Turbulence oil engine. This unit is shown installed in all the vehicle. exhibits of the Annstrcuig-Saurer concern and is on view separately in an entirely new form: As novelty gives these latest engines especial interest, we will outline this part of the exhibit first.

The new power units are smaller than the models that have hitherto been marketed in this country. They are available with six or four cylinders, the capacity of the six-cylindered unit being the smaller. Its bore and stroke are 80 mm. and 120 mm. respectively and its Treasury rating is 23.8 h.p. The corresponding dimensions of the larger four-cyliridered model are 105 mm. and 130 mm., the rating in this case being 27,3 h.p. Both have Dual Turbulence combustion systems, the feature of which is the injection of the fuel from a nozzle in the centre of the head which has four horizontal jets set radially, combined with the use of an air cell formed -in the piston crown which is of approximately heartshaped diametric section.

In the smaller engine the cylinder block is of Silumin, the casting incorporating the top half of the crankcase; it employs a one-piece c34inder head, and liners are used for the bores. Both engines have four valves per cylinder.

Three examples of the engine of the original Dual Turbulence design are shown separately. One of these is a sectioned model, from which the unique combustion system and its working can be understood: The two complete engines both have six cylinders, one being rated at 45 h.p. and the other at 63 h.p.

There are five vehicle exhibits; these comprise an Active maximum-load four-ivheeler with a wheelbase of 14 ft. 8 ins. It is shown as a chassis and an interesting feature is the use of airpressure brakes on all wheels.

Expressly designed for trailer haulage, the Effective model shown is similar in general make-up to the foregoing machine, except for the facts that a six-cylindered engine is used, that it is equipped with a super gear which gives eight forward speeds and a special double-reduction axle, and that it is provided with an air cylinder at the rear for the operation of the trailer brakes.

The third -vehicle exhibit is a Dynamic six-wheeler, having a trailing axle. Like the Effective it is powered by a six-cylindered engine.

An imposing show is made by the big Samson rigid eight-wheeler with twin steering axles and trailing fourth axle. A new feature of this machine is the addition to the rear springs of rebound plates which are fitted to the upper sides of the forward ends of the rearmost springs; their function is tO improve the road-holding qualities of the vehicle, and they have been found to correct the action on the suspension system of the torque set up by excess braking.

Equipped with an hydraulic threeway tipping body, another Active machine is shown. It differs from the first-mentioned chassis in that it incorporates a double-reduction rear axle_ It should he observed, before leaving this stand, that the Effective machine has a body of special construction, known as Steelite, which is notable for the high degree of strength it affords in view of its lightness.—AnnstrongSaurer Commercial Vehicles, Ltd., • Great West Road, Brentford, Middlesex.

Armstrong

Page 162

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