Brief Introduction to YC4D Series Engine
YC4D series diesel engine is a new type engine co-developed by YUCHAI and FEV company, Germany, which is featured by lower emission, lower fuel & oil consumption, lower noise, higher reliability, lower price and better upgrading potential.
● As a result of structural modal analysis, major parts & components, such as intake system & fuel combustion system, are designed in an optimized way and featured by better dynamic characteristics, excellent economy, higher reliability, longer service life, easier operation & maintenance.
● Adopting the piston-cooling technique by spraying the oil, new type piston rings and cylinder liner not only can meet requirements for engine performance & reliability, but also effectively reduce oil consumption.
● Complete separation of the fuel and gas by adopting technique of fuel-gas independent return flow circuits and cyclone fuel-gas separation.
● Effective reduction of piston blow-by by adopting the technique of pressure balanced fuel-gas chamber in the crankcase.
● Adopting special configuration of the China-made pump and turbocharger for cost reduction together with meeting the requirement for emission and bigger torque.
● Improved reliability by rational matching of the vibration damper and effective reduction of crankshaft’s tensional vibration on the basis of its torsion characteristics.

Emission can be up to Euro-II & Euro-III standard.
Main Technical Parameters of YC4D Engines up to Euro-3