Device for controlling an internal combustion engine

Details Device for controlling an internal combustion engine Device for controlling an internal combustion engine

2000-12-15

2003-07-15

Solis, Erick (Department: 3747)

Internal-combustion engines

Charge forming device

Including cylinder pressure or temperature responsive means

C123S436000, C123S677000, C123S681000

Reexamination Certificate

active

06591811

ABSTRACT:

BACKGROUND INFORMATION
A device for controlling a vehicle is described in German Patent No. DE 42 39 711. The device has an interface, which is defined among various subsystems and via which torque-based information is transmitted. This information includes, in particular, controlled variables, which are generated in a valve-timing unit of an engine or internal combustion engine and which relate to torque values. The various subsystems of the valve-timing unit communicate with one another (exchange data) on the basis of these torque values.
It is an intention of the present invention to expand a system of this kind by adding a sub-component that will take the engine coolant temperature into consideration, in the sense of a protective function.
Monitoring the coolant temperature in an internal combustion engine has long been state of the art. In this context, one concern is the requirement to bring the internal combustion engine to its operating temperature as quickly as possible, in particular with respect to exhaust treatment. Another concern is to protect the internal combustion engine from thermal overload. Mentioned here by way of example is German Patent No. DE 44 26 494, which relates to a device for monitoring the coolant system in an internal combustion engine. This patent describes monitoring internal combustion engine temperature and coolant temperature and activating warning and fault storage systems in the event of a fault.
SUMMARY OF THE INVENTION
The device for controlling an internal combustion engine in accordance with the present invention enables an internal combustion engine control system, which functions using a so-called torque structure, to effectively and optimally implement a protective function, which uses the coolant temperature as a baseline.


REFERENCES:
patent: 4185460 (1980-01-01), Moore et al.
patent: 4819187 (1989-04-01), Yasue et al.
patent: 5778857 (1998-07-01), Nakamura et al.
patent: 6045482 (2000-04-01), Nishar et al.
patent: 42 39 711 (1994-06-01), None
patent: 44 26 494 (1996-02-01), None

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