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Pumping loss reduction systems and methods

A technology of control system and control method, which is applied in the direction of electrical control, combustion engine, machine/engine, etc. It can solve the problems of inability to accurately control engine output torque, coordinate engine torque control, and inability to provide control signals and rapid response.

Active Publication Date: 2013-12-25
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional engine control systems cannot precisely control engine output torque as desired
In addition, conventional engine control systems do not provide rapid response to control signals or coordinate engine torque control among the various devices that affect engine output torque

Method used

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  • Pumping loss reduction systems and methods
  • Pumping loss reduction systems and methods
  • Pumping loss reduction systems and methods

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Embodiment Construction

[0083] The following description is merely exemplary in nature and is in no way intended to limit the present invention, its applications or uses. For clarity, the same reference numbers will be used in the drawings to identify similar elements. As used herein, at least one of the phrases A, B, and C should be interpreted as referring to the use of a non-exclusive logical OR (A or B or C). It should be understood that the steps in the method can be performed in a different order without changing the principle of the present invention.

[0084] As used herein, the term module refers to an application specific integrated circuit (ASIC), an electronic circuit, a processor (shared, dedicated, or grouped) that executes one or more software programs or firmware programs, and memory, and a combinational logic circuit And / or other suitable components that provide the described functions.

[0085] The controller controls the torque output by the internal combustion engine. In some cases,...

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PUM

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Abstract

An engine control system comprises a base air per cylinder (APC) module, a catalyst temperature adjustment module, an ambient temperature adjustment module, and an APC adjustment module. The base APC module determines a base APC to reduce first engine pumping losses during a first deceleration fuel cutoff (DFCO) event relative to second engine pumping losses during a second DFCO event. The catalyst temperature adjustment module determines a catalyst temperature adjustment based on a catalyst temperature during the first DFCO event. The ambient temperature adjustment module determines an ambient temperature adjustment based on an ambient air temperature during the first DFCO event. The APC adjustment module selectively adjusts the base APC based on the catalyst temperature adjustment and the ambient temperature adjustment and controls at least one of the engine airflow actuators based on the adjusted base APC during the first DFCO event.

Description

[0001] Cross references to related applications [0002] This application claims the benefits of U.S. Provisional Application No. 61 / 256,363 filed on October 30, 2009. [0003] This application relates to U.S. Patent No. 7,603,224 published on October 13, 2009. The disclosures of the aforementioned applications are fully incorporated herein by reference. Technical field [0004] The present invention relates to internal combustion engines, and more particularly, to fuel cut-off systems and methods. Background technique [0005] The background art description provided here is used to generally introduce the background of the present invention. To the extent described in this background technology section, the works of the inventors currently signed and this description do not constitute aspects of the prior art at the time of application, and are neither expressly nor impliedly regarded as the present invention. There is technology. [0006] The internal combustion engine combusts th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D43/00
CPCF02D41/0007F02D2250/18Y02T10/42F02D41/0215F02D2200/0414F02D2041/001F02D2200/0406F02D2250/22F02D41/0005F02D2200/1004F02D41/1497F02D2200/0804F02D41/0235Y02T10/40
Inventor C·E·怀特尼P·F·钱W·L·阿尔德里奇三世A·H·希普J·M·凯泽J·卢
Owner GM GLOBAL TECH OPERATIONS LLC