U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Did You Know...

...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 123/639 - System using vibrator for multiple sparks upon starting


Subclass of Class 123 - Internal-combustion engines
Definition: Subject matter wherein the multiple sparks are generated
No. of patents: 5
Last issue date: 07/31/2007


NumberTitleIssue Date
7251571Methods of diagnosing open-secondary winding of an ignition coil using the ionization current signal
In a first embodiment, the present invention is a method of detecting an open secondary winding, including the steps of enabling an integrator, resetting the integrator, detecting an ionization current, integrating the ionization current over a spark window, compari...
07/31/2007
7055372Method of detecting cylinder ID using in-cylinder ionization for spark detection following partial coil charging
The present feature of the invention comprises a method and apparatus for determining cylinder ID. When a cylinder is compressed, the resistance increases across the spark plug gap. Thus, if a spark coil is only partially charged before activation of the spark, the ...
06/06/2006
5331935Auxiliary ignition system and method for aircraft engines
An auxiliary ignition system comprising a first magneto having a normal operating mode and a start-up mode, and a second magneto having a normal operating mode and a start-up mode. A primary starter switch is operably wired to the first and second magneto...
07/26/1994
4903676Method and arrangement for improving the starting ability of an internal combustion engine during an engine start
The invention relates to a method and an arrangement for improving the starting ability of an internal combustion engine during difficult engine starting conditions that result from cold weather or other external circumstances. Lower than normal engine st...
02/27/1990
4442821Internal combustion engine ignition method
In order to improve the cold starting efficiency of a an internal combustion engines using alcohol or low cetane type fuel, an ignition method provides an ignition mode in which a plurality of energizations of the ignition plugs per cycle is effected duri...
04/17/1984
 
Sign InRegister
Username  
Password   
forgot password?