Method for operating a cooling system of an internal combustion engine and protection system in a cooling system
First Claim
1. A method for operating a cooling system of an internal combustion engine, in which a controllable rotary slide valve having at least one switched inlet or outlet is provided, the method comprising the acts of:
- monitoring movement of the rotary slide valve into multiple switching positions which correspond to, in each case, one cooling system state, andin a manner dependent on an improper functional state of the rotary slide valve and a present switching position of the rotary slide valve, changing an operating state of the internal combustion engine to an emergency operation state in which a rotational speed and/or a torque of the internal combustion engine is limited to a predetermined maximum emergency operation value.
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Accused Products
Abstract
A method is provided for operating a cooling system of an internal combustion engine, which cooling system has a controllable rotary slide valve with at least one switched inlet or outlet. The movement of the rotary slide valve into a plurality of switching positions, which each correspond with a cooling system state, is monitored. In accordance with an improper functional state of the rotary slide valve and a current switching position of the rotary slide valve, an operating state of the internal combustion engine is changed to an emergency operation state. A protection system in the cooling system carries out the method and includes a thermal management system, which receives and processes coolant temperatures, and a control unit of a controllable rotary slide valve having a position detector, which can detect a current switching position of the switchable rotary slide valve, wherein the thermal management system is connected to the control unit of the rotary slide valve.
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Citations
18 Claims
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1. A method for operating a cooling system of an internal combustion engine, in which a controllable rotary slide valve having at least one switched inlet or outlet is provided, the method comprising the acts of:
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monitoring movement of the rotary slide valve into multiple switching positions which correspond to, in each case, one cooling system state, and in a manner dependent on an improper functional state of the rotary slide valve and a present switching position of the rotary slide valve, changing an operating state of the internal combustion engine to an emergency operation state in which a rotational speed and/or a torque of the internal combustion engine is limited to a predetermined maximum emergency operation value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A protection system in a cooling system of an internal combustion engine, comprising:
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a thermal management system that receives and processes coolant temperatures; an actuation unit for a controllable rotary slide valve having at least one switched inlet or outlet; a position detector that detects a present switching position of the controllable rotary slide valve, wherein the thermal management system is connected to the actuation unit of the controllable rotary slide valve, the protection system being configured to; monitor movement of the rotary slide valve into multiple switching positions which correspond to, in each case, one cooling system state, and in a manner dependent on an improper functional state of the rotary slide valve and a present switching position of the rotary slide valve, change an operating state of the internal combustion engine to an emergency operation state in which a rotational speed and/or a torque of the internal combustion engine is limited to a predetermined maximum emergency operation value. - View Dependent Claims (16, 17, 18)
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Specification