Interesting HEUI PDF
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FTE Remembers
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From: Spanaway
Interesting HEUI PDF
Found this to be a interesting thing to read on the HEUI system.
The full test can be found in this link
http://dieselclass.com/Fuels%20Files/HEUI%201-08.pdf
Enjoy
Sean
~~~~~~~~~~~~~SNIP~~~~~~~~~~~~~~~~~~~~~
Hydraulically Actuated Electronic Unit Injector (HEUI) Systems
Introduction
The goal to build diesel engines achieving outstanding fuel economy and high torque output from
relatively small engine displacements while lowering engine emissions produced an innovative
injection technology appearing in the early 1990’s. The use of hydraulic force to pressurize fuel for
injection was groundbreaking technology to
advance the use of cleaner, more powerful and efficient diesels engines. Hydraulically
actuated Electronic Unit Injection (HEUI) fuel systems utilize highly pressurized engine lubrication oil
to drive plungers pressurizing fuel for injection. Until the development of HEUI technology, pressurization
of fuel and injection timing events were controlled mechanically and limited by the fixed geometry of
camshaft profiles. HEUI systems however were the first truly modern injection system having the capability
to pressurize fuel independently of engine speed. Electronic engine control also permits enormous flexibility
for engine software to optimally adjust injection pressure, fuel delivery rates and timing of the injection event
for each engine speed and load condition.
~~~~~~~~~~~~~SNIP~~~~~~~~~~~~~~~~~~~~~
The full test can be found in this link
http://dieselclass.com/Fuels%20Files/HEUI%201-08.pdf
Enjoy
Sean
~~~~~~~~~~~~~SNIP~~~~~~~~~~~~~~~~~~~~~
Hydraulically Actuated Electronic Unit Injector (HEUI) Systems
Introduction
The goal to build diesel engines achieving outstanding fuel economy and high torque output from
relatively small engine displacements while lowering engine emissions produced an innovative
injection technology appearing in the early 1990’s. The use of hydraulic force to pressurize fuel for
injection was groundbreaking technology to
advance the use of cleaner, more powerful and efficient diesels engines. Hydraulically
actuated Electronic Unit Injection (HEUI) fuel systems utilize highly pressurized engine lubrication oil
to drive plungers pressurizing fuel for injection. Until the development of HEUI technology, pressurization
of fuel and injection timing events were controlled mechanically and limited by the fixed geometry of
camshaft profiles. HEUI systems however were the first truly modern injection system having the capability
to pressurize fuel independently of engine speed. Electronic engine control also permits enormous flexibility
for engine software to optimally adjust injection pressure, fuel delivery rates and timing of the injection event
for each engine speed and load condition.
~~~~~~~~~~~~~SNIP~~~~~~~~~~~~~~~~~~~~~
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