Device for interrupting the fuel supply
AssigneeMotorenfabrik Hatz GmbH & Co. KG
InventorsGuenter Kampichler, Albert Madl
Life of this patent
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Abstract
The invention relates to an internal combustion engine, in particular a one cylinder diesel engine, with a fuel injection system. The engine is provided with a mechanical control device comprising an actuator and a control element for automatic interruption of the fuel supply in case of a lack of lubricating oil. The control circuit actuator is equipped with a vacuum advance (15) with a membrane (12) for the pressurization of a closing tappet (10), in which a pressure chamber, formed by the membrane (12) and the vacuum advance (15), is open to the atmosphere. In addition, the control conduit (18) is equipped with a connection (20) on the side of the oil circuit and a connection (22) on the side of the crankcase, in order to produce a depression the control unit.
Claims11
An internal combustion engine, in which a mechanical safety device is provided for automatic interruption of the fuel supply in the event of lubricating-oil deficiency wherein as the final controlling element of a control loop there is provided a reduced-pressure cell (15;
- 57) with a diaphragm (12;
- 58) for exerting pressure on a closing tappet (10;
- 60;
- 60), said reduced pressure cell (15;
- 57) being subdivided by the diaphragm, (12;
- 58) into a first pressure chamber (16;
- 71) open to the atmosphere and a second pressure chamber (19;
- 70) subjected to pneumatic reduced pressure and in that there are provided a control line means (18;
- 55;
- 56) with a connection (20) on the oil-loop side and a connection (22) on the crankcase side to generate a reduced pressure in said second pressure chamber (19) and a restoring spring (14;
- 59) acting on the diaphragm (12;
- 58) for automatic restoration on the fuel feed.
Dependencies are inferred from the claim text.