DE229071C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

- Yes 229071 CLASS 46 Ö. GROUP

EDUARD NAGER in LUCERNE.

Starting and reversing control for internal combustion engines.

Patented in the German Empire on January 4, 1910.

The present invention aims at an unintentional influx of compressed air or To prevent pressurized gas through the starting element in reversible internal combustion engines.

Up to now, the starting element has usually opened towards the combustion chamber or against the inside of the cylinder so that the valve

. was kept closed by the pressure in the cylinder. Was the tension of the starting air very high, the latter could open the valve and thereby into the cylinder stream; the same thing could happen if the valve spring lost its tension.

Did this unintentional inflow into the working cylinder before or after the end of the Exhaust organs, so before or during the compression, the tension in the working cylinder increase to such an extent that they became disadvantageous or downright dangerous for operation.

In reversible internal combustion engines, the starting element may be used when reversing z. B. from operation to standstill when the reversing movement of both the starting as well as the unitary organ serving for reversing over the starting position returns, do not allow compressed air to flow into the working cylinder. This case is especially important because it can happen that the reversal of the movement mentioned the starting valves are opened again, which would directly counteract the shutdown of the machine.

For the purpose of the cited. Eliminate operational difficulties and dangers, is according to the invention in the supply line to the starting element before the same a closing element attached, which in reversible machines from the reversing shaft in connection with the same time for starting Serving reversing device automatically closes the air supply to the starting element or opens, and which in contrast to the starting element in the working cylinder by the compressed air pressure on its seat is held down. The purpose of the invention is twofold.

During operation, d. H. if the starter valve should not work, the air supply to the starting element is automatically connected to through the closing element the control interrupted.

When changing from the operating position to standstill, the closing element prevents that starting or compressed air flows into the cylinder when the reversal goes through the starting positions.

The concept of the invention is illustrated in an exemplary embodiment on the accompanying drawing. The starter valve α is moved from the control shaft b by the vibrating cam disk c. The cam disk c is adjusted by the lever m from the reversing shaft d in such a way that the starting valve is not actuated for its central position and the valve is moved forwards and backwards for starting by corresponding adjustment of the cam disk. The reversing shaft d is brought into the positions for standstill, starting and operation by the hand lever η. The starting air occurs immediately

the Äniaßventii through a housing e, in which the closing element, for example a valve f, is installed, in such a way that it is closed by the incoming air. This shut-off valve is opened by the cam disk k, which is firmly seated on the reversing shaft d , by a release mechanism g and h by means of the roller i . The trigger mechanism consists of

ίο a guide rod h causing the triggering with a lateral cutout and the double lever g, which is held in a position by the action of leaf springs on the lug I rotatably mounted in the lever g in which the shut-off valve f is closed. The retention in the designated position by the lug I is achieved in that the lug I is pressed by the leaf spring system drawn against a support on the fixed valve housing, so that with each movement of the lever g from the initial position shown, a torque on the lever g to Effect comes, which seeks to move the same back into the starting position. If the cam disk k is rotated when reversing or starting, the shut-off valve f is lifted by the release mechanism and the compressed air can reach the starter valve α , which is moved by its control according to the direction of rotation of the machine. If the reversal from start-up to operation is further adjusted, the simultaneous continued rotation of the cam disk k depresses the guide piece h so far that the left pawl of the lever slides into the cutout of the guide rod h , whereupon the lever g returns to its initial position by action the catch I snaps back and the valve f, which has now come out of engagement with the right pawl of the lever g , is closed by the spring pressure '. This interrupts the compressed air supply to the starter valve. When the reversing is turned backwards from the operating position, the left pawl of the lever g only slides under the guide piece h again when the reversing has reached the position for standstill. The shut-off valve f remains closed so that no compressed air can flow to the starter valve. The closing valve therefore only opens when compressed air is to pass through the starter valve into the working cylinder for forward or reverse gear.

Claims (1)

Patent claim: Starting and reversing control for internal combustion engines, characterized in that a shut-off element (f) for the starting pressure medium located in front of the starting elements (a) of the working cylinder is moved by a gear which is inevitably influenced by the reversing and which prevents the shut-off element from opening when reversing from operating position to standstill the reversal is moved via the starting position. 1 sheet of drawings.