Method and apparatus for controlling an internal combustion engine, using the current temperature of a downstream catalytic converter
First Claim
1. A method for controlling an internal combustion engine having an engine control for processing a number of measured values received over measurement lines, converting the measured values into control data for operating the engine and carrying the control data over engine feed lines to the engine, which comprises:
- directly measuring a temperature of walls of a catalytic converter, the walls carrying a catalyst substance and being disposed inside a jacket housing downstream of the engine, supplying a value of the temperature of the walls to the engine control over at least one data line, processing the value of the temperature of the walls in the engine control along with other measured values and using the processed value to control the engine.
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Accused Products
Abstract
An internal combustion engine has an engine control for processing a number of measured values received over measurement lines, converting the measured values into control data for operating the engine and carrying the control data over engine feed lines to the engine, for instance for controlling at least one of fuel injection, air delivery and ignition with the control data. A method for controlling the internal combustion engine includes directly measuring a temperature of walls or structures of a catalytic converter disposed downstream of the engine, supplying a value of the temperature to the engine control over at least one data line, processing the value of the temperature in the engine control along with other measured values and using the processed value to control the engine. An apparatus for controlling the engine and for monitoring the temperature of the catalytic converter includes at least one temperature sensor integrated on or in walls or structures of the catalytic converter. An engine control receives a number of measurement data as input variables from measurement lines and derives control data for operation of the engine from the measurement data. Engine feed lines carry the control data to the engine. At least one data line delivers measured temperature values from the catalytic converter to the engine control as input variables in addition to other input variables.
44 Citations
37 Claims
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1. A method for controlling an internal combustion engine having an engine control for processing a number of measured values received over measurement lines, converting the measured values into control data for operating the engine and carrying the control data over engine feed lines to the engine, which comprises:
directly measuring a temperature of walls of a catalytic converter, the walls carrying a catalyst substance and being disposed inside a jacket housing downstream of the engine, supplying a value of the temperature of the walls to the engine control over at least one data line, processing the value of the temperature of the walls in the engine control along with other measured values and using the processed value to control the engine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. In an assembly having an internal combustion engine and a catalytic converter for exhaust gases of the engine, the catalytic converter having walls and structures carrying a catalyst material and being disposed in a jacket housing, an apparatus for controlling the engine and for monitoring the temperature of the catalytic converter, comprising:
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a) at least one temperature sensor integrated at one of the walls and the structures of the catalytic converter for directly measuring a temperature of the walls and the structures carrying a catalyst material; b) measurement lines, an engine control receiving a number of measurement data as input variables from said measurement lines and deriving control data for operation of the engine from the measurement data, engine feed lines carrying the control data to the engine; and c) at least one data line for delivering measured temperature values from the catalytic converter to said engine control as input variables in addition to other input variables. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A method for controlling an internal combustion engine having an engine control for processing a number of measured values received over measurement lines, converting the measured values into control data for operating the engine and carrying the control data over engine feed lines to the engine, which comprises:
directly measuring a temperature of catalyst-carrying structures of a catalytic converter disposed inside a jacket housing downstream of the engine, supplying a value of the temperature of the catalyst-carrying structures to the engine control over at least one data line, processing the value of the temperature of the catalyst-carrying structures in the engine control along with other measured values and using the processed value to control the engine. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
Specification