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System and method for controlling a firing sequence of an engine to reduce vibration when cylinders of the engine are deactivated

An ignition sequence and engine technology, applied in engine ignition, engine control, engine components, etc., can solve problems such as increasing engine torque output

Active Publication Date: 2014-04-09
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Increasing the amount of air and fuel delivered to the cylinders increases the torque output of the engine

Method used

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  • System and method for controlling a firing sequence of an engine to reduce vibration when cylinders of the engine are deactivated
  • System and method for controlling a firing sequence of an engine to reduce vibration when cylinders of the engine are deactivated
  • System and method for controlling a firing sequence of an engine to reduce vibration when cylinders of the engine are deactivated

Examples

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Embodiment Construction

[0064] When cylinders of the engine are deactivated, the engine's firing sequence may be adjusted to achieve a desired number of deactivated cylinders and / or to vary which cylinders are deactivated. The firing sequence can be adjusted independently of the noise and vibration performance of the vehicle. As a result, the driver may perceive an increase in vehicle noise and vibration when the cylinders are deactivated.

[0065] The firing sequence may have an alternating pattern, a continuous pattern, or a hybrid pattern including both alternating and continuous patterns. A firing sequence having an alternating pattern alternates between firing and non-firing cylinders as the firing sequence advances according to the firing order of the engine. For example, for a four-cylinder engine, a firing sequence with an alternating pattern could be 0-1-0-1, where a 1 represents a firing cylinder and a 0 represents a non-firing cylinder.

[0066] A firing sequence having a sequential patt...

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Abstract

A system according to the present disclosure includes a spectral density module and a firing sequence module. The spectral density module determines a spectral density of engine speed. The firing sequence module selects a first set of M cylinders of an engine to activate, selects a second set of N cylinders of the engine to deactivate, and selects a firing sequence to activate the first set of M cylinders and to deactivate the second set of N cylinders. M and N are integers greater than or equal to one. The firing sequence specifies whether each cylinder of the engine is active or deactivated. Based on the spectral density, the firing sequence module adjusts the firing sequence to adjust M and N and / or to adjust which cylinders of the engine are included in the first set and which cylinders of the engine are included in the second set.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application Serial No. 61 / 709,181, filed October 3, 2012. The disclosures of the aforementioned applications are incorporated herein by reference in their entirety. [0003] This application is related to U.S. Patent Application Serial No. 13 / 798,451, filed March 13, 2013, U.S. Patent Application Serial No. 13 / 798,351, filed March 13, 2013, U.S. Patent Application Serial No. 1, filed March 13, 2013 13 / 798,586, U.S. Patent Application Serial No. 13 / 798,590, filed March 13, 2013, U.S. Patent Application Serial No. 13 / 798,536, filed March 13, 2013, U.S. Patent Application Serial No., filed March 13, 2013 13 / 798,435, U.S. Patent Application Serial No. 13 / 798,471 filed March 13, 2013, U.S. Patent Application Serial No. 13 / 798,737, filed March 13, 2013, U.S. Patent Application Serial No. 13 / 798,737, filed March 13, 2013 Serial No. 13 / 798,701, U.S. Patent Application Serial...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D17/02
CPCF02D41/0087F02D2041/288F02D41/0097F02D41/1497F02P9/00F02P9/002F02P9/005
Inventor D.R.弗纳
Owner GM GLOBAL TECH OPERATIONS LLC
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