Alternative Fuel Connection and YounkinCNG have
partnered with RedgasCNG
and Electrodiel
to bring you the most affordable and proven Aspirated
CNG systems available for your vehicle, we also carry
Autogas Sequential Injection systems. To
Order or for more information call me @ 801 427 2284
or E Mail me at younkin@gmail.com
Thanks, Jim
We are offering the following CNG Systems:
Aspirated CNG Systems
Basic Carburated CNG System $399
Basic Fuel-injected CNG System $399
Closed-loop Fuel-injected CNG system 4 cylinder $475
Closed-loop Fuel-injected CNG system 6 cylinder $499
Closed-loop Fuel-injected CNG system 8 cylinder $525
Our Aspirated systems will work on any gasoline
vehicle and with special tuning are adaptable to
Diesel/CNG applications.
The Diel 4595 closed-loop controller is the heart of our systems for fuel-injected vehicles. Unlike some of our competitor's controllers our controller is fully programmable with the program and tuning cable readily available. We also offer technical support with each system sold.
A brief description of aspirated (mixer) CNG systems:
The 2 main components in an
aspirated CNG system are the pressure regulator
and the mixer. The addition of a controller system
which includes an ECU and Stepper Motor to
regulate natural gas flow was added when
closed-loop fuel-injected engines came out in the
80's. The basic system with the regulator and the
mixer still remains the most popular and most used
system worldwide.
An aspirated CNG system starts with the High
Pressure CNG Tank. The tank is connected to the
filler and the pressure regulator with high
pressure steel tubing. There may be a valve or
high pressure filter between the tank and
regulator. On carburated vehicles the in-cab
controller switch will be the control for the
system with a 3 way switch and manometer
(electronic pressure gauge), this switch when
operated will turn off the gasoline through the
use of an electronic shut-off in the fuel, as the
gasoline runs out you switch to natural gas which
is introduced through a mixer-plate above or below
the carburator. The natural gas is then regulated
by manifold vacuum by the regulator.
On fuel injected vehicles the simple mixer system is the same with the addition of injector emulators, these are spliced in or plugged into the vehicles injector wires and turn off the injectors when the CNG system is turned on. A closed-loop controller is an addition to an aspirated system which uses the oxygen sensor along with the throttle position sensor and an RPM signal to operate a stepper motor (electronic valve) to control the amount of natural gas introduced into the system depending on a rich or lean condition.
A brief description of a Sequential Injection CNG system:
The Sequential Injection system still has a high pressure tank, filler, filter and regulator, the regulator is different in that it puts out a steady pressure as opposed to variable pressure. The Natural Gas is then injected by natural gas injectors which are controlled by the gasoline injector pulse. This system also uses its own MAP (manifold absolute pressure) sensor, natural gas pressure sensor, natural gas temperature sensor and coolant temperature sensor to operate and control the system.
Advantages of Aspirated CNG Systems:
1) Affordable ($400 to $525 without tank)
2) Easier to install
3) Less components to fail
4) Can be used on carburated vehicles
5) Tuning and setup simpler
Disadvantages of Aspirated CNG Systems:
1) Slight power loss
2) Less fuel regulation (chance of check engine
lights)
3) Old technology, works best on older vehicles
Advantages of Sequential CNG Systems:
1) More controlled CNG operation (fewer check engine lights)
2) Less power loss
3) Works good on newer vehicles
4) Modern system using multiple sensors to regulate Natural Gas
Disadvantages of Sequential CNG Systems:
1) More expensive ($2000 up without tank)
2) Harder to install (need to remove intake manifold in many cases)
3) Harder to tune, will need tuning software and tuning expertise
I have installed many Sequential and Aspirated CNG systems, as stated they both have their advantages and disadvantages. Unfortunately due to a soft economy money is scarce and many people looking to convert are opting for the less expensive aspirated systems.