1996 Volume 58 Issue 2 Pages 3-10
To save fossil energy and reduce exhaust gas emission, a dual-fuel tractor engine with alcohol fumigation was developed. This engine has two control modes, that is “diesel fuel mode” and “dual-fuel mode”. With this system, it is able to choose a control mode in various operating conditions at will. Power, heat consumption, NOx concentration and smoke density of the tested engine were examined through a PTO performance test for the two control modes. The performance of each mode indicated as good as a normal aspiration diesel engine of a tractor. In addition to this, on the dual-fuel mode NOx concentration was 40% less than on the diesel mode. Finally, plowing was carried out as feasible test using the dual-fuel tractor. The satisfactory performance of the dual-fuel control system and durability for over-loads of the engine were confirmed.