System and method for controlling spark timing when cylinders of an engine are deactivated to reduce noise and vibration

A spark timing and cylinder technology, applied in electrical control, automatic control, automatic control, etc., can solve problems such as increasing engine torque output

Inactive Publication Date: 2014-03-12
GM GLOBAL TECH OPERATIONS LLC
View PDF25 Cites 11 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • System and method for controlling spark timing when cylinders of an engine are deactivated to reduce noise and vibration
  • System and method for controlling spark timing when cylinders of an engine are deactivated to reduce noise and vibration
  • System and method for controlling spark timing when cylinders of an engine are deactivated to reduce noise and vibration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0054] Engine vibrations are transmitted to the driver through powertrain mounts, bodywork, and driver interface components such as the driver's seat, steering wheels, and pedals. Engine vibration and vehicle body vibration derived from the engine vibration generate noise felt by the driver. When one or more cylinders of the engine are deactivated, the torque pulse of the cylinder that remains active may be close to the resonant frequency of the vehicle structure from powertrain mounts to driver interface components. Therefore, the driver may perceive an increase in vehicle noise and vibration.

[0055] Systems and methods consistent with principles of the present disclosure adjust spark timing of one or more cylinders to reduce vehicle noise and vibration when one or more cylinders of an engine are deactivated. The spark timing of the one or more cylinders is adjusted to create a phase shift that cancels out the fundamental frequency of other cylinders in the engine. Thus, ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a system and a method for controlling spark timing when cylinders of an engine are deactivated to reduce noise and vibration. A system according to the principles of the present disclosure includes a cylinder activation module and a spark timing module. The cylinder activation module selectively deactivates and reactivates a cylinder of an engine based on a driver torque request. When the cylinder is deactivated, the spark timing module selectively increases an amount by which spark timing of at least one active cylinder of the engine is retarded based on noise and vibration generated by the engine when the cylinder is deactivated.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application Serial No. 61 / 693,039, filed August 24, 2012. The disclosures of the aforementioned applications are incorporated herein by reference in their entireties. [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 / 798,536, filed March 13, 2013, U.S. Patent Application Serial No. 13 / 798,435, filed March 13, 2013, U.S. Patent Application Serial No., filed March 13, 2013 No. 13 / 798,471, U.S. Patent Application Serial No. 13 / 798,737, filed March 13, 2013, U.S. Patent Application Serial No. 13 / 798,701, filed March 13, 2013, U.S. Patent Application Serial No. 13 / 798,701, filed March 13, 2013 Serial No. 13 / 798,518, U.S. Patent Application ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): F02P5/04
CPCF02D17/00Y02T10/46F02D2200/025F02D2250/18F02D37/02F02D41/0087F02P5/1512Y02T10/40
Inventor D.G.布伦南S.M.奈克
Owner GM GLOBAL TECH OPERATIONS LLC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap