YC4D Truck Series

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
Model YC4D120-20 YC4D130-20 YC4D140-20 YC4D120-30 YC4D130-30 YC4D140-30
Type Vertical, in-line, water-cooled, 4 stroke, direct injection Vertical, in-line, water-cooled, 4 stroke, Electronic control, direct injection
No. of Cylinders 4
Bore X Stroke £¨mm¡Á mm£© 108¡Á115
Displacement   £¨ L£© 4.212
Intake way Turbo-charging & inter-cooling
Rated power/speed £¨kW/r/min£© 90 /2800 96/2800 103/2800 90 /2800 96/2800 103/2800
Max. torque/speed(N.m/r/min) 350/1600
Min. fuel consumption at full load (g/kW.h) ¡Ü205
Noise£¨ISO 3744£©dB(A) ¡Ü99
Emission (TAS) Euro-II Euro-III
Net mass£¨kg£© 380
Application Low-tonnage medium-sized truck
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