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Model predictive control system and method for internal combustion engines

A technology of a control system and a control method, which is applied in the field of vehicle engine control systems and can solve problems such as accurately controlling engine output torque

Active Publication Date: 2018-06-08
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, conventional engine control systems do not control engine output torque as precisely as needed
Additionally, conventional engine control systems do not provide quick response to control signals or coordinate engine torque control among various devices that affect engine output torque

Method used

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  • Model predictive control system and method for internal combustion engines
  • Model predictive control system and method for internal combustion engines
  • Model predictive control system and method for internal combustion engines

Examples

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Embodiment Construction

[0071] The engine control module (ECM) controls the torque output of the engine. More specifically, the ECM controls the actuators of the engine based on target values ​​determined according to the requested torque amount, respectively. For example, ECM controls intake and exhaust camshaft phasing based on target intake and exhaust phaser angles, throttle valve based on target throttle opening, exhaust gas recirculation (EGR) valve based on target EGR opening And a wastegate of the turbocharger is controlled based on the target wastegate duty cycle.

[0072] The ECM may individually use multiple single-input single-output (SISO) controllers, such as proportional-integral-derivative (PID) controllers, to determine the target value. However, when using multiple SISO controllers, target values ​​can be set to maintain system stability at the expense of possible fuel consumption reduction. Furthermore, the calibration and design of individual SISO controllers can be expensive an...

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Abstract

A torque requesting module generates a first torque request for a spark ignition engine based on driver input. A torque conversion module converts the first torque request into a second torque request. A model predictive control (MPC) module determines a set of target values based on the second torque request, a model of the engine, and a matrix having dimensions of (m+n) by (m+n). n is an integer greater than zero that is equal to a number of lower boundary constraints used in the determination of the set of target values. m is an integer greater than zero that is equal to a number of constraints used in the determination of the set of target values other than the lower boundary constraints. An actuator module controls opening of an engine actuator based on a first one of the target values.

Description

[0001] Cross References to Related Applications [0002] This application is related to U.S. Patent Application No. 14 / 225,502, filed March 26, 2014, U.S. Patent Application No. 14 / 225,516, filed March 26, 2014, and U.S. Patent Application No. 14 / 225,626, filed March 26, 2014 , U.S. Patent Application No. 14 / 225,817, filed March 26, 2014, U.S. Patent Application No. 14 / 225,896, filed March 26, 2014, U.S. Patent Application No. 14 / 225,531, filed March 26, 2014, 2014 U.S. Patent Application No. 14 / 225,507 filed March 26, 2014, U.S. Patent Application No. 14 / 225,808, filed March 26, 2014, U.S. Patent Application No. 14 / 225,587, filed March 26, 2014, March 2014 U.S. Patent Application No. 14 / 225,492, filed March 26, 2014, U.S. Patent Application No. 14 / 226,006, filed March 26, 2014, U.S. Patent Application No. 14 / 226,121, filed March 26, 2014, March 26, 2014 U.S. Patent Application No. 14 / 225,496 filed on March 26, 2014 and U.S. Patent Application No. 14 / 225,891 filed on March 26, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/02F02D43/00
CPCF02D41/0007F02D41/005F02D41/0087F02D41/04F02D41/1406F02D2041/0017F02D2041/1433F02D2250/18F02D2250/22Y02T10/12Y02T10/40F02D41/0047
Inventor R.龙A.本波拉D.伯纳迪尼N.金
Owner GM GLOBAL TECH OPERATIONS LLC
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