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Method for the model-based control and regulation of an internal combustion engine

A technology of internal combustion engine and model, applied in the direction of internal combustion piston engine, electrical control, combustion engine, etc., can solve the problem of expensive differential pressure sensor

Active Publication Date: 2020-06-02
ROLLS ROYCE SOLUTIONS GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Differential pressure sensor applications are expensive

Method used

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  • Method for the model-based control and regulation of an internal combustion engine
  • Method for the model-based control and regulation of an internal combustion engine
  • Method for the model-based control and regulation of an internal combustion engine

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Embodiment Construction

[0021] figure 1 A system view of an electronically controlled internal combustion engine 1 with a common rail system is shown. The common rail system comprises the following mechanical components: a low-pressure pump 3 for delivering fuel from a fuel tank 2, a variable suction throttle 4 for influencing the fuel volume flow flowing through, a A high-pressure pump 5 for delivering fuel, a rail 6 for storing fuel and injectors 7 for injecting fuel into the combustion space of the internal combustion engine 1 . Optionally, the common rail system can also be implemented with individual accumulators, wherein, for example, an individual accumulator 8 is integrated in the injector 7 as an additional buffer volume. Additional functionality of the common rail system is assumed to be known.

[0022] The gas path shown includes both an air intake and an exhaust gas outlet. Arranged in the air intake is the compressor of the exhaust turbocharger 11, the charge air cooler 12, the thrott...

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Abstract

According to the invention, a method for the control and regulation of an internal combustion engine with exhaust gas recirculation is proposed in a first embodiment, in which an EGR rate (EGRR) is determined by means of a Kalman filter from calculated and measured variables of the gas path and from calculated and measured variables of the combustion. A method for the model-based control and regulation of an internal combustion engine is proposed in a second embodiment, in which injection system set values for controlling the injection system actuators are calculated as a function of a set torque by a combustion model (20), and gas path set values for controlling the gas path actuators are calculated as a function of an EGR rate by a gas path model (21), wherein a measure of quality is calculated by an optimizer (22) as a function of the injection system set values and the gas path set values. The measure of quality is minimized by the optimizer (22) by changing the injection system set values and gas path set values within a prediction horizon, and the injection system set values and gas path set values are set by the optimizer (22) as definitive for adjusting the operating pointof the internal combustion engine (1) by using the minimized measure of quality.

Description

technical field [0001] The invention relates to a method for controlling and regulating an internal combustion engine with exhaust gas recirculation (Abgasrückführung, sometimes called exhaust gas feedback, exhaust gas recirculation), in which method the AGR rate is changed from The calculated and measured variables of the gas path are determined from the calculated and measured variables of the combustion. Furthermore, the invention relates to a method for model-based control and regulation of an internal combustion engine, in which method a theoretical value of the injection system for actuating an injection system adjustment element is calculated as a function of a theoretical torque via a combustion model, And the gas path theoretical value for manipulating the gas path tuning element is calculated by the gas path model depending on the AGR rate. Background technique [0002] The behavior of the internal combustion engine is determined decisively by the motor control un...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/00F02D41/14F02D41/40F02D41/38
CPCF02D41/0072F02D41/1406F02D41/3836F02D41/40F02D41/401F02D2041/1412F02D2041/1417F02D2041/1433F02D21/08Y02T10/40
Inventor M.布赫霍尔茨K.格赖兴K.哈德J.尼迈尔
Owner ROLLS ROYCE SOLUTIONS GMBH
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