Abstract
This study was attempted aiming at higher power and economy of fuel of the oil engine employed for agriculture and industry, taking off a carburettor and by using a fuel injecting provision.
An oil engine with a carburetor has invariably a suction trunk which is extremely contracted and when the air passes through it, the pressure of air goes down. Because of this principle the engine of this type shows a fall both in power and efficiency of opacity when it suck up fuel.
To remove these defects we tried to inject fuel into the cyilnder from the nozzle, using a fuel injecting pump instead of a carburettor.
Consequently we got a successful result of going up in efficiency of capacity, and the power of the engine improved about 13% theoretically.
But as a result of testing it on practical experiment, the power improved about 8%, showing almost the same quantity in the consumption of fuel as the case calculated theoretically. The discrepancy between the theoretical case and the experimental one seems to be caused by the loss owing to the operation of the machine in the fuel injecting pump.
