F02D 2041/288
For performing a transformation into the frequency domain
Official title: {for performing a transformation into the frequency domain, e.g. Fourier transformation}
F02D2041/288 (For performing a transformation into the frequency domain) appears on 382 US grants and 372 published applications in this corpus.
Search patents in F02D- Granted patents
- 382
- Published applications
- 372
- Assignees
- 153
- Inventors
- 831
- Latest grant
- 13 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 6 | 0 |
| 2000 | 3 | 0 |
| 2001 | 6 | 1 |
| 2002 | 8 | 8 |
| 2003 | 7 | 11 |
| 2004 | 6 | 14 |
| 2005 | 15 | 12 |
| 2006 | 14 | 13 |
| 2007 | 9 | 9 |
| 2008 | 12 | 19 |
| 2009 | 6 | 15 |
| 2010 | 20 | 17 |
| 2011 | 13 | 12 |
| 2012 | 13 | 17 |
| 2013 | 16 | 40 |
| 2014 | 14 | 13 |
| 2015 | 19 | 18 |
| 2016 | 16 | 19 |
| 2017 | 18 | 28 |
| 2018 | 19 | 14 |
| 2019 | 16 | 11 |
| 2020 | 29 | 27 |
| 2021 | 16 | 21 |
| 2022 | 21 | 18 |
| 2023 | 17 | 2 |
| 2024 | 7 | 6 |
| 2025 | 3 | 2 |
| 2026 | 1 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Internal combustion engine misfire detecting device and misfire detecting method13 Jan 2026US 12,523,170 B2Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
- Method for dynamically determining a firing pattern for an engine with dynamic cylinder activation and a system implementing the method16 Dec 2025US 12,497,928 B2Purdue Research Foundation
- Method to adjust an internal combustion engine and internal combustion engine14 Oct 2025US 12,442,346 B2Ferrari S.P. A.
- Electronic control device and combustion state detection system25 Feb 2025US 12,234,787 B2Hitachi Astemo, Ltd.
- Method for operating a fuel injection system for supplying a combustion engine with fuel, and electronic control unit12 Nov 2024US 12,140,104 B2Robert Bosch GmbH
- Non-intrusive fueling event measurement for fueling systems8 Oct 2026US 2026/0309103 A1Cummins-Scania HPCR System, LLC
- Control Device for Internal Combustion Engine20 Aug 2026US 2026/0243212 A1Hitachi Astemo, Ltd.
- Detecting knock using an arima model6 Aug 2026US 2026/0226878 A1Robert Bosch GmbH
- Novel system for enhancing thermomechnical efficiency and reducing emissions and noise levels in ic engines9 Jul 2026US 2026/0194025 A1
- Value-moving deviation method for acquiring cycle-stage combustion parameters of engine based on multiple sensing signals5 Mar 2026US 2026/0063086 A1Tianjin University
Most cited
By later US patents
- Flow meter567US 6,874,480 B1Combustion Dynamics Corp. · 2005
- System and method for monitoring and detecting faults in a closed-loop system118US 8,700,360 B2Cummins Intellectual Properties, Inc. · 2014
- System and method for processing test measurements collected from an internal combustion engine for diagnostic purposes110US 5,361,628 AFord Motor Company · 1994
- Method and system for detecting the misfire of an internal combustion engine utilizing engine torque nonuniformity93US 5,278,760 AHitachi America, Ltd. · 1994
- System for intelligent control of an engine based on soft computing78US 6,216,083 B1Yamaha Motor Co., Ltd. · 2001