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Diesel Emission Controls

If you are thinking about adding HHO to your Diesel engine, excellent choice. Diesel responds very positive to both hydrogen and oxygen. The increased oxygen provides more oxidizer for burning the fuel more complete. The addition of hydrogen burns even more of the Diesel vapors & is an added fuel. It is a win win situation.

I have witnessed HHO upgrades to several diesel trucks. All of them gained more power. All of them gained better fuel efficiency. All of them gained cleaner exhaust emissions. Consequently, all of the owners smiled from ear to ear.

  • One big rig truck put out black smoke and heavy fumes while running at idle. That problem was eliminated. The truck ran for 30 minutes, in a garage, and no one noticed any diesel smell. One guy climbed the stack to check the exhaust. He was amazed.
  • Another vehicle, a dump truck, poured out black smoke when it pulled heavy loads. That problem was solved. It not only  no longer smoked, it ran like it had another higher gear. Hills that normally were a struggle, were no longer a struggle.
  • One pickup truck, was able to spin his tires. while sitting still.
  • I know of one pickup truck that nearly doubled his mileage.

At one time, I had a report that some 2008 diesels came out with an emissions system that used a small amount of diesel injected directly into the exhaust to burn unburned fuel. Makes no sense to me, but that was the report. If you know anything about this, please let me know.

Starting in 2008, some manufacturers started putting computerized emission controlled systems on diesels. I found information stating that both Wide Band and Narrow Band O2 sensors are being used, and MAP/MAF sensors. If that is the case, you will need to determine exactly what you have before order an Analog or Digital AFR Tuner. HHO Electronics makes good ones.

Diesel Catalytic converters are called Diesel Particulate Filters (DPF).
Here is some supporting documentations  http://www.singapore-motors.com/new-diesel-technologies.html

One thing we know for sure is that diesel requires less HHO than gasoline.





Diesel Emissions Systems Components


Tips from HHO Electronics - How to determine what type of O2 sensor you have

You are expected to do a full test before ordering anything from HHO Electronics.

The Narrow Band Oxygen Sensors can be checked with a voltmeter. They have 1, 2, 3 or 4 wires. One of these wires will show a switching voltage between zero to 1V....  a couple of times per second, in close loop (that happens after the car is warmed up). Sometimes it is hard to visualize this signal because the digital voltmeter has a slow response.

Dodge, Chrysler, and Jeep may add 2.5V to this signal, so the output is switching between 2.5 to 3.5V.

The Wide Band sensors, on the other hand, work based on current, so checking the voltages is kind of useless. But still, a voltage check can be used to at least eliminate some of the other wires.

Wide band sensors come with 4, 5, 6 or even 7 wires. You are interested only in the one showing a voltage from 2V to maximum 5V. Still, this is not enough to decide which is the correct wire. One way to find out is to use a simple resistor, 1k ohm value (1,000 ohms). Simply connect one terminal to the battery + (+12V) and connect the other terminal to the testing wire. A pin or sharp test point is helpful (to pass through the insulation). Or it can be checked at the connector. (if you use a pin to puncture the insulation in the wire, seal that pin hole up when you finish. If you do not, water will get in and corrode the wire over time).

However, with the car started, we want to inject some current to the sensor. DO NOT do this with a narrow band sensor! So first, check to see if the sensors is Narrow Band or not, as described above!

By connecting to resistor to the sensor, a little current is injected at the terminal. This will not cause any harm to it, but will tell the car to go lean. Only one of the terminals will work like this, and that is
the terminal you are use with the EFIE. So, turn on the car, wait until it goes into closed loop and then check the wires with the method described. When you get a sudden drop in RPM, most probably you have found the correct wire. This will also prove that the sensor is a wide band type.

Fuel Saver MPG uses a different method, described here: http://www.fuelsaver-mpg.com/wide-band-efie-installation-instructions  This method might be correct, but the resistor will prove that the
sensor can be affected by extra current.

If you can determine precisely what type of sensor you have, HHO Electronics can recommend one of their products. If not, they have other products which are basically a complement to the EFIE:

  HHO Electronics web site




  EPA - Environmental Protection Agency
  EPA - Diesel Fuel

The U.S. Environmental Protection Agency (EPA) is establishing a comprehensive national control program that will regulate the heavy-duty vehicle and its fuel as a single system. As part of this program, new emission standards will begin to take effect in model year 2007 and will apply to heavy-duty highway engines and vehicles. These standards are based on the use of high-efficiency catalytic exhaust emission control devices or comparably effective advanced technologies. Because these devices are damaged by sulfur, we are also reducing the level of sulfur in highway diesel fuel by 97 percent by mid-2006. The program provides substantial flexibility for refiners, especially small refiners, and for manufacturers of engines and vehicles, to aid them in implementing the new requirements in the most cost-efficient manner.

Heavy-duty trucks and buses today account for about one-third of NOx emissions and one quarter of PM emissions from mobile sources. In some urban areas, the contribution is even greater. EPA’s
new program will result in PM and NOx emission levels that are 90 percent and 95 percent below today’s levels, respectively. The results of this historic program are comparable to the advent of the catalytic converter on cars, as the standards will for the first time result in the widespread introduction of exhaust emission control devices on diesel engines. And, just as removing lead from gasoline enables the use of catalytic converters, this program removes sulfur from diesel fuel to enable the use of these advanced emission controls on diesel vehicles.

The 1990 Amendments: The View from the Driver’s Seat (Gasoline & Diesel)
Typical drivers will probably not be aware of many vehicle and fuel changes manufacturers are making in response to the 1990 Clean Air Act, although these changes could add $200 to the cost of a car and a few cents per gallon to the cost of gasoline. But there are other programs that drivers will notice, especially in areas with air pollution problems. New 1994 and later model cars must be equipped with “onboard diagnostic systems.” These systems feature dashboard warning lights that alert drivers to malfunctioning emission control equipment. Controlled by the vehicle’s computer, the onboard diagnostic system must also be capable of storing trouble codes that help mechanics pinpoint the malfunction.

Another change involves tampering and mis-fueling. Such activities have always been discouraged, but were previously illegal only for commercial operations. “Backyard mechanics” now are also subject to stiff penalties for deliberate tampering. For drivers in polluted cities, more changes will be apparent. Some cities will have to start I/M programs to check vehicle emissions on a regular basis. Areas that already require I/M testing may have to institute more stringent programs.

As projected by the Agency in the 2007 rulemaking, all manufacturers are planning to use catalyzed diesel particulate filters (CDPFs) to comply with the 2007 particulate matter (PM) standard.




DPF Pressure Sensor

Pressure sensing is used to optimize the process of reducing particulate mater (PM) in diesel exhaust. For example, system back pressure is measured to determine when a diesel particulate trap or filter (DPT or DPF) becomes clogged. Back pressure rises as the amount of particulate matter increases.

Diesel Particulate Filter

So called catalytic converter.

Ford Dura-torq TDCi 2.0L, 136 PS, DPF Engine

These systems rely on the use of a liquid additive to enable diesel particulates to oxidize at relatively low temperatures in the filter. Ford has increased production to satisfy the heavy demand for these DPF equipped models, particularly in Germany.

The next Ford product to be equipped in production with a DPF system will be the Ford Mondeo.

The Mondeo Duratorq TDCi with C-DPF will initially be offered in Germany plus the Scandinavian, Austrian, Swiss and French markets. Other markets will follow shortly afterwards, depending on demand which in turn is largely driven by local governmental tax incentives or penalty regulations.

  Read the article

Ford DPF

Diesel Particulate Filter (DPF) systems will be made available across the heart of Ford of Europe vehicle portfolio, including retro-fit systems for the majority of diesel-powered Ford vehicles already in customer's hands.

Ford already offers modern diesel particulate filter (DPF) systems on the new Ford Focus and Focus C-Max models.

All of the after market performance companies offering DPF Delete Kits are quick to point out, these kits are solely for closed-course racing and off-road use only, and are not street legal in any state. It is Federal Law. Get busted on a public road with the DPF removed and the owner of the vehicle faces a $2,500 fine --- and the Installer who did the work faces a $25,000 fine.... as does the company who sold the DPF Delete Kit.

EPA,,, Thank You for the Boat Anchor !


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