Method of deriving engine cylinder mechanical top dead centre
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Mar 24, 2009
Grant Date -
Dec 28, 2006
app pub date -
Oct 20, 2003
filing date -
Nov 27, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An in-cylinder pressure sensor obtains a high resolution pressure curve for each cylinder cycle allowing the various data to be derived for improved monitoring and control of operation of the engine. A more accurate measure of work done by the engine is obtained allowing more accurate estimation of the vehicle torque and hence real torque control. In addition engine losses can be more accurately calculated and the estimates corrected yet further by obtaining an accurate top dead centre position for the engine cylinders.
First Claim
all claims..Other Claims data not available
Family
Country | kind | publication No. | Filing Date | Type | Sub-Type |
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- RICARDO CONSULTING ENGINEERS LIMITED;RICARDO UK LIMITED
International Classification(s)

- 2003 Application Filing Year
- G01M Class
- 714 Applications Filed
- 258 Patents Issued To-Date
- 36.14 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Cooper, Brian Gorman | Merstham , GB | 5 | 99 |
# of filed Patents : 5 Total Citations : 99 | |||
Cornwell, Richard Charles Elliot | Shoreham-by-sea , GB | 3 | 70 |
# of filed Patents : 3 Total Citations : 70 | |||
Di, Lieto Nicola | München , DE | 7 | 99 |
# of filed Patents : 7 Total Citations : 99 | |||
Greenwood, David | Shoreham-by-sea , GB | 32 | 316 |
# of filed Patents : 32 Total Citations : 316 | |||
Noble, Andrew David | Steyning , GB | 2 | 64 |
# of filed Patents : 2 Total Citations : 64 | |||
Truscott, Anthony | Worthing , GB | 20 | 459 |
# of filed Patents : 20 Total Citations : 459 | |||
Winslett, Edward Colin | Brighton , GB | 2 | 64 |
# of filed Patents : 2 Total Citations : 64 |
Cited Art Landscape
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Patent Citation Ranking
- 10 Citation Count
- G01M Class
- 3.39 % this patent is cited more than
- 16 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

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Apr 25, 2022 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WRIGHT, DAVID C.;REEL/FRAME:059699/0385 Owner name: WRIGHT'S IP HOLDINGS, LLC, TEXAS Effective Date: Apr 25, 2022 |
Feb 12, 2021 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 4TH YR, SMALL ENTITY (ORIGINAL EVENT CODE: M2551); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY year of fee payment: 4 |
Aug 15, 2017 | I | Issuance | |
Jul 26, 2017 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
May 21, 2015 | P | Published | |
Nov 22, 2013 | F | Filing | |
Nov 19, 2013 | PD | Priority Date |

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