hello i need a little explanation regarding the Throttle Position Sensor.
i've seen some carbureted motorcycles where they use a TPS sensor with the carb.
googled it and got to know that it uses a varying voltage to send some signals to the TCI which advances the ignition according to those signals.
also found below explanation;
"Without the TPS in circuit you have a 2 dimensional ignition advance curve that advances the spark depending on the RPM, no matter what the load, similar to points and centrifugal weights of yesterday.
With the TPS in circuit you have the 3rd dimension. Now the igniter knows if the engine is under hard acceleration, cruising, slowly building speed or decelerating when it cross references with RPM. This is important as the speed of the flame front in the combustion chamber changes as the load on the engine changes and in turn the timing of the spark needs to change in line with the flame front to produce good ignition at the point of maximum chamber pressure".
so i have a few questions;
1) it says "With the TPS in circuit you have the 3rd dimension. Now the igniter knows if the engine is under hard acceleration, cruising, slowly building speed or decelerating when it cross references with RPM". so can't these conditions be recognized without a TPS? i mean only by the RPM values. for example if the RPM is constant, bike is cruising. if the RPM is increased rapidly, it's hard acceleration.
2) what is the main purpose of putting a TPS on a carbureted vehicle ? does it improve the fuel consumption or does it improve the engine power ?
3) sorry not sure this is a mechanical thing rather than electronic. but when people talk about TPS they talk about the "engine load". is that a similar word for the "hard acceleration" or a different thing ? i think it plays a main role in this topic. still didn't fully unerstand what it means.
thank you very much.
i've seen some carbureted motorcycles where they use a TPS sensor with the carb.
googled it and got to know that it uses a varying voltage to send some signals to the TCI which advances the ignition according to those signals.
also found below explanation;
"Without the TPS in circuit you have a 2 dimensional ignition advance curve that advances the spark depending on the RPM, no matter what the load, similar to points and centrifugal weights of yesterday.
With the TPS in circuit you have the 3rd dimension. Now the igniter knows if the engine is under hard acceleration, cruising, slowly building speed or decelerating when it cross references with RPM. This is important as the speed of the flame front in the combustion chamber changes as the load on the engine changes and in turn the timing of the spark needs to change in line with the flame front to produce good ignition at the point of maximum chamber pressure".
so i have a few questions;
1) it says "With the TPS in circuit you have the 3rd dimension. Now the igniter knows if the engine is under hard acceleration, cruising, slowly building speed or decelerating when it cross references with RPM". so can't these conditions be recognized without a TPS? i mean only by the RPM values. for example if the RPM is constant, bike is cruising. if the RPM is increased rapidly, it's hard acceleration.
2) what is the main purpose of putting a TPS on a carbureted vehicle ? does it improve the fuel consumption or does it improve the engine power ?
3) sorry not sure this is a mechanical thing rather than electronic. but when people talk about TPS they talk about the "engine load". is that a similar word for the "hard acceleration" or a different thing ? i think it plays a main role in this topic. still didn't fully unerstand what it means.
thank you very much.
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