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Engine control system and method for future torque request increases

A torque request and control system technology, applied in the field of vehicle engine control system, can solve the problem of accurately controlling the engine output torque

Inactive Publication Date: 2017-12-29
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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  • Engine control system and method for future torque request increases
  • Engine control system and method for future torque request increases
  • Engine control system and method for future torque request increases

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Embodiment Construction

[0098]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 ​​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.

[0099] 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 and time-consu...

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PUM

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Abstract

Engine control systems and methods for future torque request increases are disclosed. An engine control method includes: generating a torque request for the engine based on driver input; controlling: based on the torque request: the opening of the wastegate of the turbocharger; the opening of the throttle valve based on the torque request; and the intake valve phaser and Exhaust valve phaser. The engine control method further includes selectively determining an expected future increase in torque request. The engine control method further includes, based on the expected future increase and before the torque request is increased based on the expected future increase: reducing the opening of the wastegate; and at least one of: reducing the opening of the throttle valve; and adjusting the intake air at least one of a valve phaser and an exhaust valve phaser to reduce the volumetric efficiency of the engine.

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, U.S. Patent Application No. 14 / 225,569, filed March 26, 2014 , 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, 2014 U.S. Patent Application No. 14 / 225,531 filed March 26, 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, March 2014 U.S. Patent Application No. 14 / 225,587 filed on March 26, 2014, U.S. Patent Application No. 14 / 225,492, filed March 26, 2014, U.S. Patent Application No. 14 / 226,006, filed U.S. Patent Application No. 14 / 226,121 filed on March 26, 2014 and U.S. Patent Application No. 14 / 225,891 filed on March 26, 2014. The entire disclosure of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/02F02D43/00
CPCF02D41/0087F02D41/1406F02B37/18F02D11/105F02D41/0007F02D2041/002F02D2041/1412F02D2041/1433F02D2200/1004F02D2200/1006F02D2200/606F02D2250/18F02D23/00Y02T10/12F02D9/02F02D29/02F02D2009/0205F02D2009/0276
Inventor K.波赫纳C.E.惠特尼
Owner GM GLOBAL TECH OPERATIONS LLC
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