Products

YC4S

  • Power range: 130-170 hp
  • Applications: 6-7m road buses, public buses and European light buses, 7-7.5m road buses and public buses, 5.5-7m school buses and 7.5-8.5m school buses
  • Product slogan: benchmarking engine for road buses and light trucks

Product Parameters

ADVANTAGES

Product Feature

1.Reliability

Long B10 service life design, which can be more than 500,000 km

High-strength gantry engine block

Passed the reliability bench test of about 30,000 hours

Use of a high-strength open cylinder block and an integral cylinder head, ensuring higher strength and stability

2.Lightweight

Cylinder head cover made of new material

Aluminum alloy water pump, oil pump, gear chamber and oil cooler

3.Fuel economy

Lozenge arrangement of four valves and Yuchai's patented combustion technology, achieving lower fuel consumption

Low-inertia turbocharger

Low comprehensive fuel consumption of DFAC Duolika equipped with the engine, which is 17.1 L/100 km measured by a user in Shaanxi

4.Comfort

Noise-reduction gear

Vibration- and noise-reduction clutch

Application of pilot injection control, intelligent idle speed control and other electronic control technologies, effectively reducing engine vibration and noise

5.Quick maintenance

Integrated installation of the generator, A/C compressor and tension pulley on the same bracket, integrated structure of the water pump and oil cooler, and integrated structure of the detachable oil pump, air intake pipe and cylinder head, making repair and maintenance quick and convenient

Product Parameters

 

Product Series

Model Series

Displacement (L)

Bore × Stroke

Number of Valves per Cylinder

Emissions

Power
(kw/rpm)

Torque
(N.m/rpm)

Fuel System

Exhaust Aftertreatment

Dry Weight (kg)

Oil Change Cycle

B10 Service Life (10,000 km)

YC4S-50

YC4S130-50

3.76

102×115

4

Euro Ⅴ

96/2600

430/1300~1800

BOSCH high pressure common rail system

SCR

387

 

20,000 (standard)

50

YC4S140-50

103/2600

450/1300~1800

YC4S150-50

110/2600

500/1300~1800

YC4S160-50

118/2600

550/1300~1800

YC4S170-50

125/2600

600/1300~1800

 

ADVANTAGES

Product Feature

STRONG POWER

Large displacement, high gradeability and high efficiency

FUEL ECONOMY

Bosch high pressure common rail (HPCR) fuel injection system with the injection pressure up to 1,600 bar, achieving multiple injections and accurate control

RELIABILITY

High-strength alloy cast iron cylinder head
General engine block + independent crankcase
Long B10 service life design, which can be more than 500,000 km

COMFORT

Reduction soft meshing starter, ensuring smooth start
A framed engine body structure, ensuring good rigidity and small vibration Damping gear

Product Parameters

1.Reliability

Long B10 service life design, which can be more than 500,000 km

High-strength gantry engine block

Passed the reliability bench test of about 30,000 hours

Use of a high-strength open cylinder block and an integral cylinder head, ensuring higher strength and stability

2.Lightweight

Cylinder head cover made of new material

Aluminum alloy water pump, oil pump, gear chamber and oil cooler

3.Fuel economy

Lozenge arrangement of four valves and Yuchai's patented combustion technology, achieving lower fuel consumption

Low-inertia turbocharger

Low comprehensive fuel consumption of DFAC Duolika equipped with the engine, which is 17.1 L/100 km measured by a user in Shaanxi

4.Comfort

Noise-reduction gear

Vibration- and noise-reduction clutch

Application of pilot injection control, intelligent idle speed control and other electronic control technologies, effectively reducing engine vibration and noise

5.Quick maintenance

Integrated installation of the generator, A/C compressor and tension pulley on the same bracket, integrated structure of the water pump and oil cooler, and integrated structure of the detachable oil pump, air intake pipe and cylinder head, making repair and maintenance quick and convenient

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