Statistics: Posted by Veggibenz — Thu Dec 17, 2009 9:41 pm
]]>
]]>
wired with the safc & then the throttle body position sensor is
not telling the ecu that you floored it & need more fuel.
You can setup 2 settings in an safc, so you can switch if on HHO.
Your dead times for your injector opening times can be changed
in your eprom. An eprom can have 2 tunes & be switchable also.
There are a few tips BeRational. But dancing is more fun
Cheers !
Statistics: Posted by Hybrid — Sun Dec 13, 2009 11:38 pm
]]>
That said, the way that A/F ratio is calculated is by how much fuel the computer calculates went in based on the time the fuel injectors were open. And how much air passed the Air Mass sensor.
The o2 sensors do not detect A/F ratio, they detect Stoichiometric (A complete burn). The O2 sensor feeds back to the ECU with a voltage for how much bellow or above stoichiometric. Then the ECU will add or subtract time that the injectors are open to try to get to the correct ratio.
During "Open loop" Wide open throttle and startup, The ECU has a fuel map table to determine how much fuel should be added. And does not look at the sensors besides the Air Mass. If you can count on the HHO being there those map tables could be adjusted or fuel pressure reduced.
Here is the theory part, that I have not tried yet:
Hypothesis: When adding HHO to the combustion we are still searching for Stoichiometric, therefore the O2 sensors are still working to hit the same value. The ECU should be able to correctly add the gasoline needed to adjust to the blended fuel. The concern is that the ECU has minimum limits built in that will not allow reduce the gasoline injection to a small enough value. In this case turning down the Fuel Pressure would trick the computer into injecting less fuel for the same injector opening time.
Statistics: Posted by BeRational — Fri Dec 11, 2009 6:55 pm
]]>
]]>
]]>
]]>
]]>
]]>
]]>
To all the smart men on this site who know more about air to fuel ratios than I , I am asking for some input.
I an currently running a 1996 1800cc Corola EFI ON 19/1 AIR FUEL RATIO.
MY CELL IS PUTTING OUT AROUND 1.2 L/M of Ho gas and I am also running water injection at the rate of 500ml per 100KL. I have added the water injection to aid in valve cooling. Since adding the water injection the vehicle is running smoother and with better power than before. The vehicle is running better at 19/1 than it was on straight fuel,
What I am coming to after all that is what would be the opinion of those who know better than I if I was to get in touch with Garry of Chemelec to change the settings of his o2 sensor so I could increase the higher end of the o2 sensor to run on maybe 22/1 air fuel ratio.
I am thinking that higher air fuel ration may well be possible seeing that at 19/1 I cannot get this car to ping under any condition.
So I seek your comments.
Regards to all.
Weggl
Statistics: Posted by weggl — Fri May 23, 2008 10:07 pm
]]>