Fig.8 Electronically Controlled Hydraulic System for Fuel Injection and Inlet/Exhaust Valve Actuation
6.2 Water-emulsified Fuel
The use of emulsified fuel is extremely effective at high load condition to reduce NOx emission with no increase in other harmful exhaust emissions. But the use of it at low load condition causes the problem to increase PM, CO and HC.
6.3 Selective Catalytic Reduction (SCR) System
In addition to NOx reduction, reduction of N2O and HC is possible by using this SCR system. As for the effect of fuel property on N2O emission, N2O concentration is influenced by sulfur in the fuel.
6.4 Electronically Controlled Hydraulic System for Fuel Injection and Inlet/Exhaust Valve Actuation
Now, we have mounted the electronically controlled hydraulic system for fuel injection and inlet/exhaust valve actuation on the 3-cylinder engine, have checked the functions of this system, and have gotten favorable engine operation test.
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