- #1
Jimmybrockman
- 4
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I have a two stroke Yamaha motorcycle and I wish to fit a narrow band lambda sensor to the exhaust with the intention of monitoring air/fuel ratios and eventually designing and making a simple closed loop fuel injection system (with some open loop capabilities, until the sensor warms up or at full power).
I have most of the equipment I need e.g an analogue oscilloscope (digital storage scope would be better but oh well), prototyping boards, access to components and electronics experience including an A level in electronics.
My question is how do you think the lambda sensor would cope with two stroke exhaust gasses?
According to wiki:
"The sensor does not actually measure oxygen concentration, but rather the amount of oxygen needed to completely oxidize any remaining combustibles in the exhaust gas. Rich mixture causes an oxygen demand. This demand causes a voltage to build up, due to transportation of oxygen ions through the sensor layer. Lean mixture causes low voltage, since there is an oxygen excess."
So would the raw fuel that passes through the exhaust port during gas the exchange on a two stroke and the extra hydrocarbons from un-burnt two stroke oil affect the operation and readings of a lambda sensor to the point that it is unable to determine if the engine is actually running lean or rich?
Thank you very much
I have most of the equipment I need e.g an analogue oscilloscope (digital storage scope would be better but oh well), prototyping boards, access to components and electronics experience including an A level in electronics.
My question is how do you think the lambda sensor would cope with two stroke exhaust gasses?
According to wiki:
"The sensor does not actually measure oxygen concentration, but rather the amount of oxygen needed to completely oxidize any remaining combustibles in the exhaust gas. Rich mixture causes an oxygen demand. This demand causes a voltage to build up, due to transportation of oxygen ions through the sensor layer. Lean mixture causes low voltage, since there is an oxygen excess."
So would the raw fuel that passes through the exhaust port during gas the exchange on a two stroke and the extra hydrocarbons from un-burnt two stroke oil affect the operation and readings of a lambda sensor to the point that it is unable to determine if the engine is actually running lean or rich?
Thank you very much