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Class Information
Number: 73/35.02
Name: Measuring and testing > Engine detonation (e.g., knock) > Fuel rating (e.g., octane rating)
Description: Subject matter wherein a measurement of a quality of a test fuel is made by detecting an abnormal rapid combustion (e.g. knock) of the test fuel in the engine and comparing the knock of the test fuel with a knock value of a second fuel having a known fuel rating.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8646312 Method and system for measuring RON and MON values for light distillates Feb. 11, 2014
8646320 Fuel property determining apparatus Feb. 11, 2014
8627858 Methods and systems for selectively fuelling a vehicle Jan. 14, 2014
8607623 Method for biodiesel blending detection based on fuel post-injection quantity evaluation Dec. 17, 2013
8555702 Method for recognizing at least one feature of the fuel in an internal combustion engine Oct. 15, 2013
8423267 Cetane number detection device and cetane number detection method Apr. 16, 2013
8397550 Method for determining the ignitability of a fuel Mar. 19, 2013
8396643 Gas turbine control device and gas turbine system Mar. 12, 2013
8307695 Cetane number estimation method Nov. 13, 2012
8281643 Cetane number determination apparatus for fuel of diesel engine and method of determining cetane number of fuel of diesel engine Oct. 9, 2012
8266947 Cetane number estimating apparatus and method Sep. 18, 2012
8046153 Compensation for oxygenated fuels in a diesel engine Oct. 25, 2011
7987696 Fuel distillation property determining apparatus and method Aug. 2, 2011
7983831 Control apparatus and method for internal combustion engine and fuel property determining apparatus and method Jul. 19, 2011
7972865 Sensor for detecting and differentiating chemical analytes Jul. 5, 2011
7926331 Detection of fuel property based on change in rotational speed of engine Apr. 19, 2011
7762127 Method for determining the composition of a fuel mixture Jul. 27, 2010
7673618 Control system for internal combustion engine Mar. 9, 2010
7599781 Control system for internal combustion engine Oct. 6, 2009
7556030 Spark ignition type internal combustion engine Jul. 7, 2009
7487663 Method for selecting fuel to both optimize the operating range and minimize the exhaust emissions of HCCI engines Feb. 10, 2009
7478627 Fuel control apparatus for internal combustion engine Jan. 20, 2009
7421884 Method of determining cetane number of fuel in internal combustion engine Sep. 9, 2008
7246596 Control system for internal combustion engine Jul. 24, 2007
7224267 Tire pressure monitoring system May. 29, 2007
7210455 Engine control with fuel quality sensor May. 1, 2007
7181379 Variable altitude simulator system for testing engines and vehicles Feb. 20, 2007
7117862 Adaptive engine control Oct. 10, 2006
7050901 Fuel property determination system May. 23, 2006
7028532 Fuel property determination system Apr. 18, 2006
6862517 Method for processing a sensor signal of a knocking sensor for an internal combustion engine Mar. 1, 2005
6745613 Method and system for determining the type of fuel used to power a vehicle Jun. 8, 2004
6651485 Method for determining the viscosity of an operating liquid of an internal combustion engine Nov. 25, 2003
6626033 Method for operating an accumulator-type catalytic converter of an internal combustion engine Sep. 30, 2003
6609413 Method and apparatus for measuring cetane number of diesel fuel Aug. 26, 2003
6474308 Apparatus for detecting fuel property for internal combustion engine Nov. 5, 2002
6344118 Structure of oxygen sensing element Feb. 5, 2002
6321721 Apparatus for detecting the fuel property for an internal combustion engine Nov. 27, 2001
6318152 Fuel property judgement device for internal combustion engine Nov. 20, 2001
6314944 Fuel property determination from accumulated intake air amount and accumulated fuel supply amount Nov. 13, 2001
6155101 Method and device for preparing a fuel, particularly for diesel engines, by on-line mixture of its components Dec. 5, 2000
6125690 Device for testing of diesel fuel Oct. 3, 2000
6061637 Method of determining knock resistance rating for non-commercial grade natural gas May. 9, 2000
6026778 Method and device for decoking a combustion chamber of a diesel engine Feb. 22, 2000
6006587 Method and device for determining the knock rating of motor fuels Dec. 28, 1999
5962775 Method for testing unleaded aviation gasolines Oct. 5, 1999
5906190 Air-assisted fuel injection system for ignition quality determination May. 25, 1999
5817923 Apparatus for detecting the fuel property for an internal combustion engine and method thereof Oct. 6, 1998
5633798 Method and apparatus for measuring octane number May. 27, 1997
5586537 Fuel property detecting apparatus for internal combustion engines Dec. 24, 1996

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