The engine used for vehicle and vessel is called the internal combustion engine. It has been engineering judgment that automobiles are moving getting power under the cycle of 4 –stroke in engine called “inhale- compression-explosion exhaust”. This is the serious of repeated process which is air and fuel inhaled and compressed into cylinder by piston, exploded by spark plug, and the burned air exhausted. Unfortunately, there might be some big difference between engineering theory and reality. The most important process among 4-storke is “inhale” because it is the process for air and fuel to be supplied to the cylinder.
When inhale-stroke happens to all the fossil automobiles, the air is supplied into cylinders by pistons. However, the most essential air needed to be used for automobiles is not likely to be inhaled. The fuel is injected by force with the only supplying pressure method automotive makers unilaterally regulate.
Being different from the real 4 strokes, the real cycle of 4 strokes is working as “ injection-compression-explosion-exhaust”. The fuel supply by intentional injection, not by “inhale” cannot meet the changeable driving condition at any time.
More than 15% of the precious fuel on average is likely to be wasted by intentional injection, which
also cause environmental air pollution by incomplete combustion in the engine.
In addition, the excessive fuel supply to the engine can cause abnormal strange heat regardless of
complete combustion. Actually, thus heat is the carbon emission which accelerates global warning.
The precious fuel is being wasted and even worsening the air pollution and global warming. It is a big dilemma even though we have such an automatic device or not for fuel supplying fit for driving
condition.