US Patent No: 5,111,790

Number of patents in Portfolio can not be more than 2000

Direct fire ignition system having individual knock detection sensor

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Importance

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Abstract

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A direct fire ignition system for an internal combustion engine having a coil assembly attachable to each spark plug. Each coil assembly has a high voltage transformer for producing a voltage sufficient to cause the spark plug to generate a spark, an integral capacitor parallel with the spark plug, and a spark plug sensor circuit coupling to the high voltage transformer for generating a spark confirmation signal when a spark is generated. The spark sensor circuit is responsive to a high frequency signal generated in the high voltage transformer within a predetermined frequency range to generate the spark confirmation signal. The direct fire ignition system is compatible with single strike or multi-strike modes of operation. The system can also generate a probe voltage across the spark plug to test for auto or pre-ignition.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
PRESTOLITE WIRE CORPORATIONSOUTHFIELD, MI21

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Grandy, Mark E Port Huron, MI 7 210

Cited Art Landscape

Patent Info (Count) # Cites Year
 
NISSAN MOTOR CO., LTD. (2)
4,502,454 Ignition system for an internal combustion engine 35 1982
5,003,958 Ignition coil mounting structure for engine 27 1989
 
AISIN SEIKI KABUSHIKI KAISHA (1)
4,382,430 Ignition system 7 1981
 
Chrysler Motors Corporation (1)
4,846,129 Ignition system improvements for internal combustion engines 43 1988
 
DAIMLER-BENZ AKTIENGESELLSCHAFT (1)
4,547,734 Equipment for recognizing misfiring 27 1983
 
MAGNETI MARELLI S.P.A. (1)
4,825,844 Ignition system for an internal combustion engine 10 1986
 
TEMIC AUTOMOTIVE OF NORTH AMERICA, INC. (1)
4,886,029 Ignition misfire detector 53 1988

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
CHRYSLER GROUP LLC (4)
5,411,006 Engine ignition and control system 13 1993
5,406,921 Misfire detection method 11 1993
5,377,652 Ignition transformer 10 1993
5,534,781 Combustion detection via ionization current sensing for a "coil-on-plug" ignition system 32 1994
 
FORD GLOBAL TECHNOLOGIES, LLC (2)
5,333,593 Energy-on-demand ignition coil 2 1993
5,476,084 Energy-on-demand ignition coil 7 1994
 
HONDA GIKEN KOGYO KABUSHIKI KAISHA (2)
5,327,867 Misfire-detecting system for internal combustion engines 6 1993
5,438,970 High tension cord connector with misfire detecting capacitor for internal combustion engine 1 1993
 
MICHIGAN SPRING & STAMPING OF MUSKEGON, LLC (2)
6,409,160 Methods of manufacturing coils and apparatus for same 2 2001
6,382,607 Methods of manufacturing coils and apparatus for same 0 2001
 
ROBERT BOSCH GMBH (2)
5,890,473 Ignition device for a multi-cylinder internal combustion engine 2 1998
7,066,163 Ignition system for an internal combustion engine 0 2005
 
SNAP-ON TECHNOLOGIES, INC. (2)
6,396,277 Coil on plug signal detection 28 1999
6,717,412 Ignition signal pickup interface box 7 2000
 
COMAU, INC. (1)
6,426,626 Apparatus and method for testing an ignition coil and spark plug 12 1999
 
DAIMLERCHRYSLER AG (1)
6,466,876 Measuring device for electrically decoupled function testing of working systems 2 2000
 
DELPHI TECHNOLOGIES, INC. (1)
6,119,667 Integrated spark plug ignition coil with pressure sensor for an internal combustion engine 31 1999
 
DENSO CORPORATION (1)
6,675,785 Ignition device for an internal combustion engine 3 2003
 
GENERAL MOTORS CORPORATION (1)
5,636,620 Self diagnosing ignition control 11 1996
 
HOERBIGER KOMPRESSORTECHNIK HOLDING GMBH (1)
5,992,386 Method for knock control in combustion engines 19 1997
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
5,602,714 Ignition coil for internal combustion engine 0 1995
 
SAGEM SA (1)
6,259,344 Ignition component for internal combustion engines 2 1995
 
THE OHIO STATE UNIVERSITY RESEARCH FOUNDATION (1)
5,687,082 Methods and apparatus for performing combustion analysis in an internal combustion engine utilizing ignition voltage analysis 34 1995
 
UNISON INDUSTRIES, LLC. (1)
5,572,135 Diagnostic apparatus and methods for ignition circuits 2 1994