YC4W Bus Series

YC 4W series diesel engine is the new type HSDI fuel engine in which Yuchai has the proprietary intellectual property rights with a displacement of 1.2L¡«1.8L and power coverage of 55 ¨C82 horse power to be applicable for bus market. This series diesel engine integrated modern engine advanced technology, like 4-valve dual overhead camshaft structure, electronic high pressure common rail injection system, turbo-charging & inter-cooling, water-cooled EGR, timing chain transmission agent, hydraulic valve clearance adjuster, spherical bearing runner axle rocker and with the advantage of low consumption ¡¢lower emission¡¢highly active.

Engine features for YC4W series bus diesel engine

  • Advanced Technology -
    • All aluminum structure, light weight;
    • £¨DOHC£©4-valve, DCHC;
    • Direct injection¡¢Turbo-charging & inter-cooling;
    • £¨CR£©Electronic high pressure common rail injection system;
    • EGR Water cooled EGR;
    • Advanced air managerial system;
    • Variable area turbocharger(VNT)(optional);
    • Alterable intake whirlpool(in option)
  • Big power output - Power 55KW-82KW£¬power performance up to advanced international standards
  • Low Emission - US Delphi electronic high pressure common rail technology, up to Euro-III
  • Low consumption - Lowest oil consumption ¡Ü215g/kW.h, specific fuel consumption lower than 0.1%
  • Lower noise - Reach GB14097-1999 standard, Noise on testing platform¡Ü94dB£¨A£©
  • High reliability - Reach German FEV mechanical reliability, engine life B10 above 250000 kilometer.
  • Better applicability - Low displacement, High output per liter, light in weight, better applicability.

Main Technical Parameters for YC4W series bus diesel engine

Model YC4W75-30 YC4W75-31 YC4W85-30 YC4W100-30 YC4W110-30
Type horizontal type¡¢in-line,4-cylinder¡¢water-cooled¡¢4-stroke¡¢16 valves Vertical,in-line 4-cylinder¡¢water-cooled 4-stroke¡¢16 valves
Intake way Turbo-charging and inter-cooling ¡¢water-cooled EGR
(L)Displacement 1.22 1.22 1.4 1.6 1.8
Rate power/speed(r/min) 55/4200 55/4200 63/4200 72.5/4000 82/4000
Torque(N¡¤m)/ Speed(r/min) 153/2400 153/2400 180/2400 200/2400 225/2400
(g/kW¡¤h) Min. Fuel Consumption at Full Load ¡Ü215
dB(A) Noise ¡Ü94
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