System and method for controlling the cooling circuit of an internal-combustion engine
A technology of internal combustion engine and control system, which is applied in the direction of engine cooling, engine components, machine/engine, etc., and can solve the problems that the characteristic temperature cannot be easily realized, and the engine cannot be provided
Inactive Publication Date: 2012-07-18
RENAULT SA
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- Description
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- Application Information
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Problems solved by technology
The temperature of the heat transfer fluid output from such an engine does not provide a sufficiently accurate indication of the thermal state of the engine to ensure temperature protection of the most vulnerable parts such as the section between the cylinders
However, determining the characteristic temperatures of these parts cannot be easily achieved during the operation of the vehicle
Method used
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Embodiment Construction
[0049] figure 1A first embodiment of a system for controlling a cooling circuit of an internal combustion engine is shown. The figure shows an internal combustion engine 1 equipped with a cooling circuit comprising a main circuit 2 and an auxiliary circuit 3 .
[0050] The main cooling circuit 2 comprises a device 5 for interrupting the flow, the inlet of which is connected to the internal combustion engine 1 by a line 4 and the outlet of which is connected by a line 6 to the main radiator 7 . The main radiator 7 is connected by a line 8 to the inlet of a pump 10 which is connected by a line 11 to the internal combustion engine 1 .
[0051] The auxiliary circuit 3 basically comprises an air heater 18 . An inlet line 17 branches off between the flow interruption device 5 and the internal combustion engine 1 and is connected to an air heater 18 . An outlet line 19 branches off between the main radiator 7 and the pump 10 and is connected to an air heater 18 .
[0052] A tempe...
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The invention relates to a method, during cold starting, for controlling a cooling circuit containing a heat-transfer fluid for an internal-combustion engine (i) installed in an automobile, the cooling circuit being provided, downstream from the internal-combustion engine (i), with a means (5) for interrupting the flow suitable for creating a discontinuity in the flow of heat-transfer fluid, initially in the off position, characterised in that said method includes the following steps, which involve: determining a typical temperature for the thermal condition of a specific area of the internal-combustion engine by means of applying a model according to the temperature inside the internal-combustion engine; and switching the means (5) for interrupting the flow into the on position if the typical temperature for the thermal condition of the specific area of the internal-combustion engine is higher than a maximum temperature.
Description
technical field [0001] The present invention relates to the technical field of thermal management of internal combustion engines, and more particularly to the management of cooling systems according to the temperature of the internal combustion engine. [0002] The invention enables an improvement in engine thermal management by using monitoring means, in particular related to a discontinuity in the flow of heat transfer fluid. Background technique [0003] The fuel consumption and pollution emissions of an internal combustion engine are influenced by its operating temperature. In order to produce a vehicle with low fuel consumption, it is important to regulate the temperature of the internal combustion engine so that it is at an optimum level during operation, especially during start-up. [0004] This is why the temperature sensor is usually located within the cooling circuit passing through the cylinder head. Additionally, if this sensor is positioned within the cylinder...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F01P7/16
CPCF01P2025/33F01P2025/66F01P7/162F01P2025/48F01P7/16F01P2023/08F01P2037/02F01P2060/08F01P2025/46F01P7/164F01P2025/64F01P2025/62F01P2007/146
Inventor G-M・克洛阿雷克A・圣-马尔库
Owner RENAULT SA