G01L 23/30
Means for indicating consecutively positions of pistons or cranks of internal-combustion engines
Official title: Means for indicating consecutively positions of pistons or cranks of internal-combustion engines in combination with pressure indicators
G01L23/30 (Means for indicating consecutively positions of pistons or cranks of internal-combustion engines) appears on 15 US grants and 10 published applications in this corpus.
Search patents in G01L- Granted patents
- 15
- Published applications
- 10
- Assignees
- 14
- Inventors
- 38
- Latest grant
- 31 Jan 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 3 |
| 2022 | 2 | 0 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Engine monitoring method31 Jan 2023US 11,566,969 B2Perkins Engines Company Limited
- Engine oil dipstick monitoring apparatus31 May 2022US 11,346,740 B2Perkins Engines Company Limited
- Engine monitoring apparatus25 Jan 2022US 11,230,952 B2Perkins Engines Company Limited
- Method and control device for determining reliability regarding misfire determination of cylinders of an internal combustion engine21 Dec 2021US 11,203,994 B2Scania CV AB
- Method for determining the total pressure in the cylinder of an engine30 Oct 2018US 10,113,930 B2Continental Automotive France
- Method and control device for determining reliability regarding misfire determination of cylinders of an internal combustion engine2 Sep 2021US 2021/0270199 A1Scania CV AB
- Engine monitoring method27 May 2021US 2021/0156764 A1Perkins Engines Company Limited
- Engine Monitoring Apparatus13 May 2021US 2021/0140351 A1Perkins Engines Company Limited
- Engine Monitoring Apparatus4 Jun 2020US 2020/0173878 A1Perkins Engines Company Limited
- Method for determining the total pressure in the cylinder of an engine27 Jul 2017US 2017/0212002 A1Continental Automotive France
Most cited
By later US patents
- Apparatus and methods of detecting injection in a diesel engine26US 4,090,404 ASouriau & Cie · 1978
- Engine position detection using manifold pressure24US 5,321,979 ADelco Electronics Corporation · 1994
- Method for determining the top dead center of an internal combustion engine13US 6,564,623 B2K.K. Holding AG · 2003
- Method and apparatus for determining the compression ratio of an engine cylinder9US 4,836,015 AGeneral Motors Corporation · 1989
- Method and apparatus for determining the upper dead-center position with piston engines7US 4,147,054 ADaimler-BenzAktiengesellschaft · 1979