• A New Daimler-Benz Pre-combustion Chamber
Page 60
If you've noticed an error in this article please click here to report it so we can fix it.
ACCORDING to Daimler-Benz, A.G., Stuttgart, Germany, in an oil engine of:the pre-combustion-chamber type it is desirable when starting to inject the fuel through the ante-chamber into the main combustion space. Hitherto, any attempt to form a valve in the antechamber has, it is stated, met with failure owing to the moving portions seizing up on account of the heat. A scheme claimed to be free from this defect is described by the above concern in patent No. 444,460.
The arrangement consists of a spherical valve member enclosed in a spherical space under the injector. In the left-hand drawing the valve is in the normal running position, in which the space (3) forms the pre-combustion chamber, leading to the cylinder via a ring of holes (1). When starting, the spherical valve is moved through 90 degrees, and assumes the position shown in the right-hand drawing. In this position, the fuel is 'sprayed directly into the mouth of the cylinder orifice, LAI the pre-combustion-chamber effect is minimized, if not abolished. An important point is the provision of a small restriction (2); this is stated to \prevent seizing-up.
An Hydraulic Master Cylinder.
ANimproved scheme for the automatic replacement of lost oil in an hydraulic braking system is described in patent No. 444,781 by SchmutzBremsen A.G., of Freil-surgstrasse 125a, Berne, Switzerland. The accompanying drawing shows an arrangement in which the braking force is first of all supplied by a vacuum cylinder (1); this operates the piston (5) and
applies pressure to the pipe lines. In the position of rest (as shown) small bores (3) are in alignment with the oil-reservoir pipe (2) for the purpose of refilling the system. When the brakes are applied, the initial pressure forces the ball valve (4) to its seating, thus cutting off the supply. The benefits of the scheme are stated to be due to the entire absence of springs and sliding valves, which have been known to stick. This latter feature obviates the need for special oil. The Ventilation of Buses and Coaches.
PATENT NO. 444,205, by Clayton Dewandre Co., Ltd., S. E. Willett and H. Blomeley, all of Titanic Works,
Lincoln, discloses a method of ventilating passenger vehicles, with or without the addition of a heating device. The drawing shows a plan of a vehicle employing the scheme, in which the air enters a duct (3) at the front, passes through a heater (2), and then, after assistance from a blower (1), is forced into a main trunk (4) situated under the floorboards. The main conduit is then branched to outlets located under the passenger seats or in the side walls.
A Trailer Hauling and Steering Connection.
A DRAWBAR coupling for trailers in which the dual functions of towing and steering art unaffected by
in which the towing force is transmitted by a universally jointed link (1). This forms a frame-to-frame connection, and can be made of sturdy proportions. .
The steering system, which employs stub-axles with the usual track rod, is operated by a tiller bar (2), which is slidably mounted in a slot in the towing link (1). The action of the device is easily, grasped from the drawing.
Continental Suspension Progress.
RESEARCH into new suspension systems appears to be very marked on the Continent, particularly in the direction of independent springing. The latest scheme appears in patent No. 443,702, and is by Societe Nouvelle des Automobiles Unic, 1, Quai National, Puteaux, France. The patent refers to driving axles and, as shown in the accompanying drawing, employs ordinary leaf springs as the resilient medium. Each wheel is carried by an arm (1) which is clamped to only one spring (2), whence it is extended completely across the chassis, and terminates in a pivot -bearing (3). The drive is provided by universally . jointed half-axles, whilst the braking arrangements (not -shown) are of substantially normal construction.