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Ashwin V Vyas

from Columbus, IN
Age ~46
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Connected to:
Alok Vyas, 51Alpesh A Vyas, 42Ash Vyas, 57Avani B Vyas, 35Avanindra K Vyas, 75Avinash Vyas, 45Beena A Vyas, 62Bhavna K Vyas, 49Bhupesh M Vyas, 56Dhaivat R Vyas, 39

Ashwin Vyas Phones & Addresses

  • 3244 Skyview Ct, Columbus, IN 47203
  • West Lafayette, IN
  • Boston, MA
  • W Lafayette, IN

Publications

Us Patents

Nonlinear Internal Resonance Based Micromechanical Resonators

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US Patent:
20070046397, Mar 1, 2007
Filed:
Jul 31, 2006
Appl. No.:
11/496881
Inventors:
Anil Bajaj - West Lafayette IN, US
Ashwin Vyas - Lafayette IN, US
Arvind Raman - W. Lafayette IN, US
Dimitrios Peroulis - West Lafayette IN, US
Assignee:
Purdue Research Foundation - West Lafayette IN
International Classification:
H03H 9/00
US Classification:
333186000
Abstract:
A micromechanical resonator having a structure defining a first mode and a second mode and permitting non-linear internal resonance between the first and second modes. The resonator may further include a first component embodying a first mode and a second component embodying a second mode such that the first and second modes are substantially completely non-linearly coupled with each other while the second component vibrates at a frequency approximately twice the at least one first natural resonance frequency.

Nonlinear Micromechanical Resonator

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US Patent:
20080047346, Feb 28, 2008
Filed:
May 31, 2007
Appl. No.:
11/809070
Inventors:
Ashwin Vyas - West Lafayette IN, US
Anil Bajaj - West Lafayette IN, US
Dimitrios Peroulis - West Lafayette IN, US
International Classification:
G01H 13/00
H03H 9/00
US Classification:
073580000, 333186000
Abstract:
A micromechanical resonator having an actuator configured to provide an excitation, a second component configured to move within a plane at a second frequency in response to the excitation of the actuator, and a first component coupled with the second component such that the movement of the second component at the second frequency induces resonant excitation of the first component that is substantially completely out of the plane.

Fresh Air Flow Estimation

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US Patent:
20120137678, Jun 7, 2012
Filed:
Jun 3, 2011
Appl. No.:
13/153132
Inventors:
Indranil Brahma - Bloomington IN, US
Ashwin Vyas - Columbus IN, US
Vivek Anand Sujan - Columbus IN, US
Phanindra Garimella - Bloomington IN, US
John N. Chi - Columbus IN, US
Abdoul Karim Abdoul Azizou - Greenwood IN, US
International Classification:
F02B 37/12
G01M 15/04
US Classification:
606051, 7311205
Abstract:
An apparatus includes an operating conditions module that interprets a number of compressor operating parameters; a compressor flow module that determines a compressor inlet flow in response to the number of compressor operating parameters; and a fresh air flow module that provides a fresh air flow value in response to the compressor inlet flow. The operating conditions module further interprets a current mass air flow value, and the apparatus further includes a mass air flow sensor trimming module that adjusts a mass air flow sensor drift value in response to the current mass air flow value and the fresh air flow value. The apparatus includes a diagnostics module that determines a mass air flow sensor is failed in response to the current mass air flow value and the fresh air flow value.

Apparent Plumbing Volume Of Air Intake And Fresh Airflow Value Determination

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US Patent:
20130124068, May 16, 2013
Filed:
Oct 4, 2012
Appl. No.:
13/644498
Inventors:
Cummins Inc. - Columbus IN, US
Vivek Sujan - Columbus IN, US
Andrew Osburn - Nashville IN, US
Ashwin Vyas - Columbus IN, US
Assignee:
Cummins Inc. - Columbus IN
International Classification:
F02D 41/18
US Classification:
701104, 701108
Abstract:
An apparatus for fresh airflow determination includes an operating conditions module that interprets a MAF value, a current operating condition and a charge flow value. The apparatus further includes a volume estimation module that determines an apparent plumbing volume of an air intake assembly in response to the MAF value, the current operating condition and the charge flow value. The apparatus further includes a volume reporting module that provides the apparent plumbing volume.

Fuel Drift Estimation And Compensation For Operation Of An Internal Combustion Engine

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US Patent:
20130139788, Jun 6, 2013
Filed:
Oct 16, 2012
Appl. No.:
13/652875
Inventors:
Cummins Inc. - Columbus IN, US
Ashwin Vyas - Columbus IN, US
Mert Geveci - Albany NY, US
Axel Otto zur Loye - Columbus IN, US
Assignee:
Cummins Inc. - Columbus IN
International Classification:
F02D 41/18
US Classification:
123350
Abstract:
Methods and systems are disclosed for fuel drift estimation and compensation using exhaust oxygen levels and fresh air flow measurements. An actual fueling to the engine cylinders is determined from the exhaust oxygen level and fresh air flow to the internal combustion engine. The actual fueling is compared to an expected fueling based on the fueling command provided to the internal combustion engine. The difference between the actual fueling and expected fueling is fuel drift error attributed to changes or drift in the fuel injection system and is used to correct or compensate future fueling commands for the fuel drift.

Systems And Methods For Compensating Airflow Determinations For Air Compressor Bleed

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US Patent:
20130192567, Aug 1, 2013
Filed:
Oct 10, 2012
Appl. No.:
13/648434
Inventors:
Cummins Inc. - Columbus IN, US
Ashwin Vyas - Columbus IN, US
Assignee:
Cummins Inc. - Columbus IN
International Classification:
F02B 33/02
F02B 37/00
US Classification:
1235591, 606051
Abstract:
Systems and methods are disclosed for compensating a mass airflow (MAF) sensor reading to account for the bleeding or diversion of intake airflow for compressor operation in determining fresh air flow into an engine. The engine is downstream from the compressor diversion.

Filter Regeneration Using Filter Temperature Modulation

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US Patent:
20130333351, Dec 19, 2013
Filed:
Jun 18, 2012
Appl. No.:
13/526326
Inventors:
Ashwin Vyas - Columbus IN, US
Michael Haas - Columbus IN, US
International Classification:
F01N 3/023
F01N 3/035
US Classification:
60274, 60311, 60297
Abstract:
According to one embodiment, an apparatus for controlling the regeneration of a particulate filter of an internal combustion engine system includes an operating conditions module that is configured to monitor at least one engine system condition. The apparatus also includes a regeneration module that is configured to trigger a regeneration event if the at least one engine system condition meets a threshold. Further, the apparatus includes a thermal management module that is configured to operate the internal combustion engine system in a thermal management mode for a first time period while a regeneration event is triggered by the regeneration module. Also, the apparatus includes a high NOmodule configured to operate the internal combustion engine system in a high NOmode for a second time period following the first time period while the regeneration event is triggered by the regeneration module.

Systems And Methods For Thermal Management Of Aftertreatment System Components

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US Patent:
20150113947, Apr 30, 2015
Filed:
Oct 24, 2013
Appl. No.:
14/061957
Inventors:
- Columbus IN, US
Vivek A. Sujan - Columbus IN, US
Ashwin Vyas - Columbus IN, US
Guoqiang Li - Indianapolis IN, US
Fan Zeng - Columbus IN, US
Assignee:
Cummins Inc. - Columbus IN
International Classification:
F01N 3/20
US Classification:
60274, 60286
Abstract:
An exhaust aftertreatment system includes an oxidation catalyst and a selective catalytic reduction (SCR) catalyst disposed in an exhaust stream of an internal combustion engine. A stay warm thermal management strategy is employed after warm-up of the aftertreatment system is complete to maintain the aftertreatment system above a temperature providing a desired performance threshold of one or more components of the aftertreatment system, such as the oxidation catalyst or the SCR catalyst.

Isbn (Books And Publications)

Voices From Prison: An Ethnographic Study Of Black Male Prisoners

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Author

Ashwin Vyas

ISBN #

0761829660

Control profile
Ashwin V Vyas from Columbus, IN, age ~46 Get Report