<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html> <head> <link rel="stylesheet" type="text/css" href="gpdt.css" /> <meta name="description" content="GPDT offers continuous direct control of diesel fuel injector needle lift, to control fuel injection flow rate. Tests prove this capability." /> <meta name="keywords" content="fuel injection,rate shaping,Carnot,mechatronics,electromechanical,actuator,transducer,solenoid,magnetostrictive,magnetostriction,terfenol,terbium,rare earth,piezoelectric,piezoceramic,PZT,emissions,NOx,diesel particulate matter,DPM"/> <title>Advanced Fuel Injection</title> </head> <body> <div class="screen"> <div class="links"> <center> <h3> <a href="gpdt.html" alt="Home"> Home</a> &nbsp <a href="Mechatronics.html" alt="Mechatronics"> <nobr>Mechatronics</a> &nbsp <a href="benefits.html" alt="Benefits"> <nobr>Benefits</a> &nbsp <a href="test.html" alt="Test"> <nobr>Test</nobr></a> &nbsp <a href="status.html" alt="Status"> <nobr>Status</nobr></a> &nbsp </h3> </center> </div><!--end links--> <div class="content"> <br> <center> <h2>GREAT PLAINS DIESEL TECHNOLOGIES, L.C. (GPDT)<br> <i>Robust. <font color="#008000">Green.</font> Control.</i> </h2> <h3> </center> <br> <b>OUR MISSION:</b> Provide <b><u>BREAKTHROUGH INJECTION CONTROL</u></b> for the Diesel Industry enabling better <b>emissions reduction</b> and <b>fuel efficiency</b> during the combustion process. Most emission solutions today concentrate on expensive after combustion treatments, but GPDT tackles the issue at its core! <br><br> <b>History of the Solenoid-Operated Diesel Fuel Injector</b> <ul> <li>Solenoids were applied to fuel injection in <a href="http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=1059604.PN.&OS=PN/1059604&RS=PN/1059604" target="new">1913</a>. To this day, physics still limits their force and speed. <li>Relatively weak and slow, the solenoid is confined to operating a servo valve in the injector. <ul> <li>The servo valve in turn directs fuel pressure to only open or close the injector needle. </ul> <li>The solenoid and servo valve cause significant, and now unacceptable, time delays. <li>The solenoid and servo valve confine injector operation to open or closed. <li>Very finely tuned for some speed, operation is then sensitive to fuel properties. </ul> <b>Advancing the State of this Art</b> <br> GPDT's advances are to the diesel engine what the invention of the telephone was to the telegraph. <ul> <li>In the early 2000s, faster injector opening and closing was known to help reduce emissions. <ul> <li>Therefore, a faster actuator was needed for the servo valve. </ul> <li><a href="http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=7,255,290.PN.&OS=PN/7,255,290&RS=PN/7,255,290" target="new">United States Patent 7,255,290</a> theorized how to get higher speed from a new actuator technology. <li>After 7,255,290 issued, GPDT was incorporated in 2008 to test the speed theory. <li>This actuator eliminates the need for a servo valve. </ul> <b>Key Features</b> <img class="UUT2" src="UUT2.jpg" width="350" height="51.8" alt="UUT2" /> <br> GPDT offers previously unavailable continuous and durable control over each entire injection event. <ul> <li>GPDT's 2018 prototype injector design has <b>no servovalve</b>. <li>Needle lift is proportional to electrical current flowing through the actuator. Because current can be held steady for any length of time anywhere in its range, <b><i>the needle can be stopped for any length of time at any intermediate lift anywhere in its range, thus varying at will the rate at which fuel is injected.</b></i> <li>Needle speed is proportional to the rate at which current increases or decreases. </ul> <a href="test.html"alt="Tests"><nobr>Tests</nobr></a> prove these control features. </h3> </div><!--end content--> <!--==============================================================--> <div class="header"> <img src="gpdt_logo.jpeg" alt="GPDT Logo" width="800" height="101" /> </div><!--end header--> <!--==============================================================--> <!--==============================================================--> <div class="footer"> <left> <h4><b>Copyright 2008-2018 Great Plains Diesel Technologies, L.C.</b> &nbsp Last revised<b>:</b> August 14, 2018. &nbsp All rights reserved.</h4> </div><!--end footer--> <!--==============================================================--> </div><!--end screen--> </body> </html>