Method and device for controlling the heating of glow plugs in a diesel engine
AssigneeBeru AG
InventorsOlaf Toedter, Heinz-Georg Schmitz
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Abstract
A process and device for controlling the heating of the glow plugs of a diesel engine. To be able to take into consideration the thermal behavior of the glow plugs while controlling the current supply of the glow plugs (3) of a diesel engine, the thermal behavior of the glow plugs (3) is emulated via a physical model. Formed on the corresponding output signal of the model (4), which is proportional to the glow plug temperature, is a reference signal, which as a control value, lies on the electronic control (12) controlling the heating flow of the glow plugs (3), which accordingly controls the heating of the glow plugs (3) using the actual glow plug temperature determined from emulation.
Claims6
A device for controlling the heating of the glow plugs of a diesel engine, comprising:
- an electronic control for controlling the heating flow of the glow plugs,
- wherein a physical model of the glow plugs is provided in the form of a physical energy storage whose energy state is proportional or inversely proportional to glow plug temperature and is provided a reference signal to the electronic control.
Dependencies are inferred from the claim text.