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Petrol-injection Scheme By Bosch
Page 106
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A PETROL-INJECTION system in tA which a pressurized fuel supply is admitted by electrically operated valves is shown in patent No. 880,369. (Robert Bosch G.m.b.H., 4 Breitscheidstrasse, Stuttgart-W, Germany) The drawing shows a valve-cuminjector that sprays the fuel into the induction pipe just outside the inlet valve. Fuel is fed from the top via a central bore and reaches the nozzle via a cross-bore .(1) when the valve is unseated. A solenoid winding (2), when energized, creates the lift by 'attracting the armature (3). This moves towards a stationary core (4) against the force of\ a spring (5).
The chief point of the patent is the means used to cushion the sharp action. To this end, the hollow needle-valve (6) is coupled to the solenoid core by an injected nylon liner (7). The resilience of this jointis enough to soften the hammer-blow caused by the armature movement.
The specification also gives particular of the transistorized control circuit o the system.
VEHICLE RECORDING DEVICE DATENT No. 882,762-shows an instrument for recording the activities of a vehicle. It not only indicates running time but also stationary working periods. The patent comes from Keinzle Apparate G.m.b.H., Villingen, Schwartzwald, Germany.
ONE-STEP-HIGH BUS BODY
AREAR-ENGINED bus having its lower deck mainly one step from the ground is described in patent No. 880,684. The scheme deals with a means of getting sufficient height for the rear spring movement in spite of the low floor. (Leyland Motors, Ltd., Suffolk House, Laurence Pountney Hill, London, E.C.4.)
Referring to the drawing, the bus is of the front-entrance type and has its staircase located at the point (1). The floor level is low for most of the length, but immediately over the rear axle it is raised as shown at 2. Seats are provided on this high-level platform.
To give sufficient headroom over the raised portion, the upper deck too must be heightened and this is shown at 3. The seats on this upper level each accommodate only three passengers thus leaving a low level gangway on each side to give access to the back row of seats. An alternative scheme provides for the rows of four seats with a gangway on one side.
References are made to earlier patents numbered 759,762; 814,414 and 880,683. DIESEL COMBUSTION SYSTEM
AN oil engine combustion head in which the chamber is a plain discshaped space is shown in patent No. 880,418. The benefits claimed are " soft "
combustion and silent running. (J. Bottger, 5 Mezihori, Prague VIII. Czechoslovakia.) The cylinder is shown in cross-section with its inlet and exhaust valves in line (1). A flat-topped piston (2) is used. The injector (3) is inclined downwards at approximately 45 degrees and produces either a fanshaped spray or three separate jets as shown.
The shortest jet (4) is called the ignition jet and is directed towards the hottest part of the piston, the centre of the crown. The other two jets (5 and 6) are slightly divergent and travel in a downstream direction with respect to the air flow. Other schemes are shown in which the combustion space is lenticular, or possibly of the Hesselmann type. This can be described as a saucer-shape
having a slight cone rising to the centre The system is claimed to give con trolled initial ignition.
BRAKE FAILURE INDICATOR
I-1 A POWERED braking system relyini
for its action on hydraulic or ai pressure is fitted with a pressure responsive detector device which applie. emergency brakes. The patent come from H. Limoges, 18 Rue des Droits di L'Homme, Montlucon, Allier, France and is numbered 884,897.
AIR FILTER FOR HEATING SYSTEMS
1-1 A FILTER for incorporation in the
ventilating system of a vehicle forme the subject of patent No. 880,743. No; only does it exclude solid matter such ai dust but is also said to absorb harmful fumes emitted from other road vehicles (Ancastle Development Co., Ltd., Park. side, Henley-on-Thames.) The incoming air enters the end (I) and reaches a chamber surrounding a conical filter pack (2). This comprises inner and outer layers of wire gauze with an intermediate filling of activated charcoal. This is the substance that absorbs the fumes.
The cone is plugged at the front end (3) and opens at the rear to the exit (4). It is a long member and is loosely supported in the middle by a ring (5). The slight slack here permits a limited amount of vibration to occur during running which is claimed to be of value in shaking off solid particles that have settled on the outside of the cone, tending to clog the filter.