Quote:
Originally Posted by spirilis
Just read the link Frank posted. I thought about this idea one time, but didn't have a good answer for the O2 sensor problem--looks like you figured it out, using a Wideband O2 sensor and skewing the value as needed to provide a typical O2 sensor output the ECU will understand. Very cool.
I'd love to see some real numbers behind this. I bet adding a port-by-port Water Injection system would substantially improve the workability of the offline cylinders (from steam vaporization). The use of microprocessor is good too, I was dreaming about using an Arduino (8-bit, can have similar # of digital I/O ports if you use the ATmega2560) due to the open-source community surrounding it.
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That's great! Your deep understanding has reached the key point -----
Windband oxygen sensor will guide ECU to close the fuel control loop at
higher Lambda points (Normolized air-fuel ratio). This means less fuel
will be burnt when DCD is on, the reason of fuel saving.
Water injection is also a cool idea, but please be careful don't make the
cylinders too cold. Because intake air already has cooling effect to cylinder,
water injection may cause over-cooling. I think the best way to inject
water is to inject into the hot expanded exhaust, absorbing residual heat
energy from hot exhaust, and then, let the mutilple fluids expand in a
secondary compound cylinder ----- this has become my HEIHE invention
which has been patented.