(08-23-2009 07:54 AM)kumaran Wrote: Hi guys,
Sorry for not posting to this site for very long time.
Until today I'm still experimenting with Hydroxy and its effect to fuel economy.
- Few months back I did experiment O2 sensor by heating with propane burner. O2 sensor shows nearly 1V when heated (less fuel) and immediately goes to nearly 0V (fuel rich) when O2 sensor removed away from burner.
- Hydroxy burn rate is faster than gasoline (fact) and help to complete burn fuel pored in to combustion chamber.
With above points, I have argued with many people that O2 sensor does not sensing oxygen to control fuel but temperature.
What is my point here?
By applying hydroxy, fuel burned complete and no extra fuel hits O2 sensor to cool it down. O2 sensor send near 1V and ECu starts injecting extra fuel into combustion chamber. This is why car consume more fuel than usual.
By injecting water into combustion chamber, it helps to cool down O2 sensor. When O2 cold, it sends signal nearly 0V to ECU and ECU limits fuel entering into combustion chamber.
Amount of hydroxy and water got to be right amount to gain maximum fuel economy without adjusting sensor signals.
This is just my theory based on my observation by doing experiments. If the theory contradict, please ignore my post.
From what I have read, the O2 sensor does read O2 content. Using the Zirconia Sensor, 200Mv= lean burn and 800Mv=rich burn. The average temp for the sensors is 600 degrees F. Wikipedia says 450Mv is the ideal setting for economy and pollution.
What this tells me is the higher the Mv, the richer the O2 sensor reads, telling the ECU to lean out.
Cooling down the O2 sensor makes no sense to me. It needs to operate at that 600 degrees range. That is why when you first start up with a cold sensor, it is in open loop operation. Because when the sensor is too cold, it sends a faulty signal to the ECU causing poor operating results. This open loop mode really makes the mix rich, which makes the car work better when cold until it reaches the sensor operating temp and then it goes into closed loop mode and starts to adjust the mix for optimum performance.
That is why the newer sensors are heated to the average 600 degrees F. When the sensor gets coated and old, it doesn't read correctly and the performance goes down due to a cooler reading which signals the ECU to go richer.
The pilots in WW11 had a botton and on take off they pressed it causing water to be injected producing steam giving them that extra boost. It was designed for power. After reaching crusing altitude, they stopped the water injection- it served it purpose. It was for power and not economy.