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Commercial Smart PWM Upgrade

Price: $75.00

Upgrade any HHO system Kit to include a Commercial Smart PWM

You can upgrade any kit from our HHO Kits page to include a Commercial Smart PWM.

All Commercial HHO Kits already include the Smart PWM. So you don't need this if you're purchasing a Commercial System

Please note that the purchase of an HHO System Kit is required to take advantage of this upgrade.

The Smart PWM is no longer just a constant current PWM. The problem with a constant current PWM (CCPWM), is that you don't always need the same number of amps. For instance, the amount of HHO you need is based most of all on the engine RPM. If you have high engine RPMs, you need more HHO to maintain the correct HHO to air ratio going into the engine. Likewise at low RPMs, or at idle, you need much less HHO. The Smart PWM will be set for the correct amperage at your cruise RPMs, but will change its output based on the engine RPMs. There will be an input on the Smart PWM for an RPM signal so it can monitor engine speed.

The next problem with a CCPWM is that the engine demand for fuel is often different, even at the same RPMs. For instance, you can have high RPMs, but low demand, such as when you are going down a hill. Why waste the energy to make HHO when you are not actually using your engine. Or likewise, when you are under heavy load but relatively low RPMs, such as when going uphill or pulling a load. The Smart PWM will have a MAP signal input so it can monitor the load.

Finally, the driver is asking for different amounts of power. This shows up at the throttle position sensor. The Smart PWM also has an input for this sensor and can adjust HHO output taking this information into account as well.

As you can see, the Smart PWM will not be a constant current PWM anymore. It will be much smarter than that. It will adjust the HHO output to match the needs of the engine. This will result in better fuel mileage gains with your HHO system.

It addition to the above, the following are additional capabilities:

  1. Inputs for Tach, MAP and Throttle Position. These inputs can individually be turned on or off. Also, each sensor input can be given it's own setting for the amount it will change the PWM's output amperage. For instance, I usually set my tach input to near 100%. This means that if the tach doubles, then the PWM's output doubles. If it drops to 1/3 (which it does when it idles), then the output drops to 1/3. But for my MAP sensor, I usually set it for 25%. In this case, if the load doubles, the increase in HHO will only increase 25%. The point is, each sensor input is fully configurable.
  2. A Float Switch for sensing the level of the electrolyte in the reservoir.
  3. Output for a valve or pump to do automatic refill of the reservoir based on the float switch.
  4. Separate power and trigger inputs. The power wire can be connected to any switched power circuit in the vehicle, 12, 24 or 32 volts. This way it will be able to be programmed without having the engine running. No HHO output will occur without the trigger wire also being activated. The trigger will be able to sense from approximately 2 - 32 volts. It can also be configured to reverse logic. For instance for an oil pressure light circuit that is only powered when the engine isn't running, but is un-powered when the engine is running.
  5. Temperature controlled cooling fan. This will greatly increase fan life, as it will only run when needed. If the PWM's circuit board rises above 125 degrees Fahrenheit, then it comes on.
  6. A pressure sensor input and an output for a re-circulation pump for the system to pump the electrolyte. The pump output is also a PWM, so that it can adjust as needed to maintain a set pressure, or a fixed duty percentage selectable in the software menu.
  7. A 12 volt output that is intended for driving EFIEs or MAPe devices. This was designed primarily for vehicles with 24 or 32 volt systems, so you can power your EFIE at 12 volts. It is fused to 500 mA.
  8. A courtesy output of the system's voltage (12, 24 or 32 volts). This is also a pwm output, so it can have any duty cycle required, or just switched on (100% duty cycle).
  9. 2 spare inputs for future functions not thought of yet, such as a hydrogen gas detector, emergency shut-off.
  10. You can adjust the PWM's output based on your 0-5 volt signal. The Smart PWM will make all of it's normal calculations to arrive at a particular amperage. You can then further modify that amperage with your own 0-5 volt signal. For instance, lets say the PWM has calculated that it needs to produce 10 amps. If you supply 3 volts on this port, the PWM will instead put out 6 amps. That's 10 amps time 3/5.
  11. This system was designed so it will communicate with 3 different terminals. First will be our current LCD displays. 2nd is a new display, planned for the future, perhaps with a graphical touch screen. And 3rd is a small annunciator that we will be releasing very soon that can be used in commercial situations. This box will be about 1/2 the size of a pack of cigarettes and will have LEDs that show the status of the system and a button for turning it on and off. This is for drivers that are untrained on the HHO system, where an LCD controller would just confuse them.
  12. The Smart PWM has a frequency range of 2 Hz to 15 Khz to within 6 places of precision. For example, it can be set to exactly 2.34535 Hz, 483.355 Hz, or 1235.34 Hz. Frankly, this is just showing off. But some tube cell designs have been shown to produce more HHO at certain frequencies.

This item comes complete with everything you need to run the PWM. It includes the PWM, the Liquid Crystal Display/Contrller and a 25' cat5 cable to connect the controller to the PWM. If you need to mount the display further than 25' from the PWM, please let us know so we can add an extension for you. Not included are the heavy gauge cables that will go from the battery to the PWM and from the PWM to your HHO cell.

The dimensions of the PWM are 5-1/2" (wide) x 7" (long) x 2-7/8" (high).


Add to Cart:

  • Shipping Weight: 4.6lbs
  • 42 Units in Stock


This product was added to our catalog on Sunday 27 March, 2016.

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