D Series Bus Diesel Engine

This D series bus diesel engine is a mature product independently developed through absorbing the advanced experience from Europe, America and Japan. It is characterized by the leading performance, sophisticated technology and preeminent cost performance. This product works as the proper power support for passenger vehicles because of its high fuel economy, low noise, environment friendly and compact structure.

SC9DF Diesel Engine

Technical Specification
Model Unit EURO III, Euro III/Euro IV/Euro V
SC9DF240 SC9DF260 SC9DF280 SC9DF300 SC9DF320 SC9DF340
Type   6 in-line cylinders, electronically controlled common rail, water cooling wet cylinder liner, front gear housing
Aspiration   TCI
Bore ×Stroke mm 114×144
Total displacement L 8.8
Rated power/rated speed kw/r/min 177/2200 192/2200 206/2200 221/2200 235/2200 251/2200
Min. fuel consumption g/kw.h ≤192
Maximum torque/speed N.m/r/min 970/1400 1100/1400 1160/1400 1250/1400 1250/1400 1430/1400
Noise dB(A) ≤97
Weight kg 840
Power range ps Power Range: 215~375PS

Integral cylinder head
With this part, the D series bus diesel engine is endowed with high rigidity, low vibration and noise.

Piston with inner cooling oil passage
The piston is improved on its cooling effect and reliable performance.

Japanese professional steel piston ring and NPR cylinder liner honing technology
This technology optimizes the operating characteristics of the friction pair, improves the reliability of the engine and reduces the fuel consumption.

Swirl combustion chamber with dual extraction technology
It enhances the quality of fuel and air mixture and the combustion efficiency. Moreover, this part decreases the fuel consumption and emission.

Nippon Denso high pressure common rail fuel system
The maximum fuel injection pressure reaches 180MPa. The system realizes excellent fuel atomization and adaptability to fuel products. It exerts low emission, low noise and fuel consumption but high reliability.

Special efficient turbocharger for coach
It performs with high fuel efficiency, low fuel consumption, high power output and reliability.


Imported high pressure oil pipe of double-layer metal materials
It features preeminent resistance to pressure and corrosion, forming the fuel pipeline with high reliability.

Integration technology of electrical control
It realizes the integral control on the engine with the vehicle on performance. With this technology, this D series bus diesel engine is advanced, smart and convenient for use, meeting the demands of users.

Intelligent temperature control technology
Due to the technology, the D series bus diesel engine is able to warm up at low temperature, protect itself at high temperature automatically. It keeps the reliability and long lifespan of the friction pair in an intelligent way.

Full flow oil filter with additional fine strainer
It effectively decreases the impurities in the oil and reduces the abrasion of the piston ring.

Double operating mode and multiple operating mode technology
It is adequate to fulfill the adaptability of power selection to the vehicles, reducing the fuel consumption further.

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