Stressed Combustion and
the many hydrogen assist competitors on the internet and confusion caused
by lack of understanding by many about how hydrogen assist works, and with
my continuing effort to assert that a complete system is needed to
improve mileage, except in rare cases, I have decided to give a little
lesson on hydrogen assist. First
let me reiterate my long emphasized statement, quoting directly from our
web site home page, “The complete system is required to expect considerable increase
in mileage on your vehicle.” I
have been saying this for six years and even have two whole web pages
devoted to explaining why this is the case ( www.hydrogen-boost.com/complete.html and www.hydrogen-boost.com/savefuel.html
Now I will explain
my understanding of the exceptions to that rule. It all relates to a new term I have
introduced called “Stressed Combustion,” which I will define as operating
conditions in which the air/fuel mixture does not combust optimally.
There are times and
conditions under which the engine runs smoothly because it is designed
well for these conditions (idle, cruise, deceleration). Then there
are times and conditions when we are pushing the operating envelope of
the engine. It was not designed to operate best in these conditions
because of design limitations and materials limitations. These conditions when the engine is
pushing the limits of the design, the operating envelope, would be
considered times of stressed combustion.
Examples of stressed
combustion conditions are: RPM lower than normal idle RPM, High RPM, cold
engine temperature, humid intake air, high throttle settings especially
for long periods, heavy loads, excessive heat or cold, excessively rich
or lean air/fuel mixtures, and any other conditions that can cause
hesitation, skipping, bucking, spark
knock, stalling, heavy exhaust emissions, and worse than normal mileage. These are the conditions under which
the benefit of hydrogen assist is easily noticed because the hydrogen
will help ignite the combustion mixture better than without the hydrogen,
thereby increasing the combustion efficiency.
Normally a vehicle
is not operating under these stressed combustion conditions, except
during engine warm-up. So during
normal vehicle operation there are few times when the benefits of
hydrogen assist can be taken advantage of. Hence my statement, “The complete system is
required to expect considerable increase in mileage on your
vehicle.” However if your hydrogen
booster is installed on a work vehicle that often uses heavy throttle
because of heavy loads or under other stressed combustion conditions,
there may be a benefit to the hydrogen assist alone. For most people interested in good
mileage there are seldom such conditions.
Good mileage drivers typically drive slower, with smoother
acceleration and deceleration, and keep their loads minimized. They combine trips to drive more when their
engine is warm and drive in conditions when their engine performs
efficiently. So is hydrogen assist a benefit to them
or not? Can we create good mileage
by creating operating conditions that normally cause stressed combustion? Yes we can and do with the Complete
Hydrogen Boost system.
With the addition of
our electronic control circuit we lean out the air/fuel mixture. This forces us to open the throttle
more to get the same power output.
This removes some of the restriction to the intake air flow and
thereby reduces the pumping horsepower required to suck the air into the
engine. This leaning of the
air/fuel mixture creates a stressed combustion condition that allows us
to take advantage of the hydrogen assist.
The fuel heater of our complete system heats up the gasoline so
that more of the injected fuel will vaporize so it is prepared for
combustion. Remember liquid fuel
does not combust. Only the
vaporized fuel can combust. The fuel heater partially relieves the
stressed combustion condition by making more of the lean ratio fuel
available for immediate combustion.
This allows us to further lean the mixture so we can depend on the
hydrogen to help ignite the mixture.
Does all this mean
that if you had hydrogen assist you could get better than normal mileage
by driving your vehicle under stressed combustion conditions, like one
customer thought? Absolutely
not. If you already drive like
that you could get some benefit to hydrogen assist but you are not going
to get better than normal mileage.
Stressed combustion conditions can benefit from hydrogen
assist. Techniques can be used to
improve normally good mileage by forcing the vehicle to operate with an
ultra-lean air/fuel mixtures and relieving that stressed combustion
condition with hydrogen assist.
But, adding hydrogen assist alone to a vehicle not already
operating in stressed combustion conditions WILL NOT increase mileage.
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