YC6G Bus Series

Features for Yuchai YC6G Series Bus Diesel Engine

  • Higher reliability-The integrated cylinder head and cylinder bores using the platform deep checker technique, annular combustion chamber & piston with internal cooling passages, adopting totally metal gasket makes compression more even and cylinder bore deformation smaller, new TBP4 & GT turbochargers of Honeywell (Shanghai), USA, higher performance, lower fuel consumption, lower emission, quicker response and higher reliability.
  • Full-Authority Electronic Controls ¨C Optimize engine performance and provide seamless integration with other components, advanced diagnostics, plus a complete set of programming options.
  • Higher strength-can bear the cylinder pressure of 150 bar, thickened bottom plate of the cylinder block, shortened length of the water jacket, optimized coolant flow direction and improved cooling capacity, thickened cylinder bore wall, strengthened cylinder block rigidity and reduced deformation possibility, added auxiliary oil passages to improve the piston cooling conditions.
  • Longer service life-Adopting the piston with internal cooling passages lowers the piston surface working temperature and extends the service life of the piston and piston rings£»adopting the silicon oil vibration damper which brings better and more stable damping capacity and more effectively protect key components such as crankshaft, camshaft etc..
  • Newly designed grooved bearing shells which have remarkable effects on reduction of crankshaft wear and prevention of bearing shells and crankshaft from burning and seizing.
  • Lower fuel & oil consumption- Min. fuel consumption at full load is equal to or less than 195g/kW.h.
  • Lower emission Meeting the emission standard of Euro-¢ò and Euro-¢ó.
  • Lower Noise The average noise acoustic pressure of the whole machine at a distance of 1M is less than 97dB (A).
  • Easy maintenance Human-oriented design, higher interchangeability and better approachability.

Main Technical Parameters for Yuchai YC6G Series Bus Diesel Engine

Vertical, in-line, water-cooled, 4-stroke, direct injection
No. of cylinders
Displacement ( L)
Intake way
Turbo-charging & inter-cooling
Min. fuel consumption at full load (g/kW.h)
Noise level (ISO 3744)   dB(A)
Net Mass£¨kg£©

Model List for Yuchai YC6G Series Bus Diesel Engine

Model Rated power/speed ( kW/r/min) Max. Torque/speed (N¡¤m/r/min) Emission (TAS) Application
YC6G220-30 162/2000 890/1200-1500 Euro-¢ó 9.3-12 meters buses
YC6G240-30 177/2200 950/1200-1500
YC6G270-30 199/2200 1080/1400-1600
YC6G200-20 147/2000 850/1300~1500 Euro-¢ò 10 meters buses
YC6G230-20 170/2000 950/1300~1500 11 meters buses
YC6G240-20 177/2200 950/1400~1600 9.3-12 meters buses
YC6G270-20 199/2200 1080/1400~1600
YC6G300-20 221/2200 1150/1400~1600 11-12 meters buses
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