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Considering idling losses are present in every engine, reducing the idling rpm might be providing significant savings. But, as I noticed on my bike, the chances of engine stalling increases with reduction in idling rpm. So, is there a way, however complicated, to reduce it by any value without the engine stalling?
Assuming the ambient temperature is around 23~25 deg.
The issue with low idle is more significant when viewed from the perspective of oil pressure.
Reducing the idle, albeit a noble cause of saving the planet, reduces overall emissions insignificantly when compared to the implosion of an engine. The carbon footprint related to throwing a rod and having processed oil spill out over an open uncontrolled surface are significantly higher.
Oil pressure is usually tied to engine RPM as most oil pumps are connected to the motor itself and require the engine to be working in order to provide oil pressure. If engine RPM is reduced below suggested manufacturer settings then oil pressure could be reduced significantly as it is directly tied to engine RPM.
You would need a heavier flywheel. If you idle too low, your flywheel doesn't have enough momentum to keep the engine running smoothly. A heavier flywheel will remedy that.
Bikes are for driving and not to keep it idling. the best thing to do is to switch off the engine instead of keeping it idling. that will save some fuel as well!!
