SDEC R engine

The SDEC R Series engines are 2.5–2.8 L (2,499–2,776 cc) Inline-4 diesel engines from SDEC. They are light-duty truck engines based on licensed VM Motori designs.

SDEC R Series
SDEC SC28R 150 Q5
Overview
Manufacturer	SDEC
Layout
Configuration	Inline-4
Displacement	2.5–2.8 L (2,499–2,776 cc)
Valvetrain	DOHC
Combustion
Turbocharger	variable-geometry turbocharger or fixed geometry turbocharger with intercooler
Fuel system	Common rail direct injection
Fuel type	Diesel
Cooling system	Water-cooled
Output
Power output	74–156 PS (54–115 kW; 73–154 hp)
Torque output	252–400 N⋅m (186–295 lb⋅ft)
Emissions
Emissions target standard	Up to Euro 6

Nomenclature

SDEC R Series engines use a non-fixed naming convention:

• The first two characters "SC" signifies SDEC-Shangai Diesel Engine Co.
• The next two characters refer to the displacement of the engine; "25" = 2.5L, "28" = 2.8L.
• The next characters indicate peak metric horsepower produced.
• The Q letter indicates the emission standard. "Q4" = Euro/China 4, "Q5A" = Euro 5a, "Q6" = Euro 6.

SC25R

2.5L light-duty truck engine based on VM Motori RA 425 DOHC.

SC25R Engines
Model	Configuration	Displacement	Power	Torque
SC25R101	I4	2,499 cc (2.5 L)	74 kW (101 PS; 99 bhp) at 3200 rpm	252 N⋅m (186 lb⋅ft) at 1800–2800 rpm
SC25R120			88 kW (120 PS; 118 bhp) at 3800 rpm	320 N⋅m (236 lb⋅ft) at 1800–2500 rpm
SC25R136			100 kW (136 PS; 134 bhp) at 3800 rpm	330 N⋅m (243 lb⋅ft) at 1800–2500 rpm
SC25R150			110 kW (150 PS; 148 bhp) at 3600 rpm	360 N⋅m (266 lb⋅ft) at 1800–2500 rpm

Applications

• Joylong A4
• LDV Maxus/Maxus V80 (2011-present)

SC28R

SC28R Diesel engine
Overview
Manufacturer	SDEC
Designer	VM Motori, SDEC
Also called	RA 428
Production	2011 – present;
Layout
Configuration	Inline 4
Displacement	2.8 L; 169.4 cu in (2,776 cc)
Cylinder bore	94 mm (3.7 in)
Piston stroke	100 mm (3.9 in)
Cylinder block material	Cast iron
Cylinder head material	Aluminum
Valvetrain	DOHC 4 valves x cyl.
Compression ratio	17:1
RPM range
Max. engine speed	3750
Combustion
Turbocharger	Honeywell variable-geometry turbocharger or fixed geometry turbocharger with intercooler
Fuel system	Bosch 1600 bar High-pressure common-rail direct injection
Management	Bosch EDC17C ECU
Fuel type	Diesel
Cooling system	Water-cooled
Output
Power output	156 PS (115 kW; 154 hp)
Torque output	400 N⋅m (295 lb⋅ft)
Emissions
Emissions target standard	Euro 6
Emissions control systems	Oxidizing catalyst, DPF, EGR
Chronology
Predecessor	R 428

Light-duty truck engines based on VM Motori RA 428 DOHC. Based on a tunnel closed cylinder block design, 4-valves per cylinder, high pressure 1600bar BOSCH common rail system, aluminum alloy cylinder head, double overhead cam system and volute casing fixed geometry turbocharger or electronically controlled variable geometry turbocharger, complying with China/Euro 4, 5A and 6 emission standards.^[1]

SC28R Engines
Model	Revision	Emission standard	Configuration	Displacement	Power	Torque
SC28R110	0	Q4	I4	2,776 cc (2.8 L)	82 kW (111 PS; 110 bhp) at 3000 rpm	285 N⋅m (210 lb⋅ft) at 1800–2800 rpm
SC28R110	0	Q5			82 kW (111 PS; 110 bhp) at 3000 rpm	285 N⋅m (210 lb⋅ft) at 1800–2800 rpm
SC28R125	0	Q4			92 kW (125 PS; 123 bhp) at 3000 rpm	340 N⋅m (251 lb⋅ft) at 1800–2500 rpm
SC28R125	0	Q5A			92 kW (125 PS; 123 bhp) at 3000 rpm	340 N⋅m (251 lb⋅ft) at 1800–2500 rpm
SC28R136	0	Q4			100 kW (136 PS; 134 bhp) at 3200 rpm	350 N⋅m (258 lb⋅ft) at 1800–2500 rpm
SC28R136	0	Q5A			100 kW (136 PS; 134 bhp) at 3200 rpm	350 N⋅m (258 lb⋅ft) at 1800–2500 rpm
SC28R143	0	Q4			105 kW (143 PS; 141 bhp) at 3600 rpm	330 N⋅m (243 lb⋅ft) at 1800–2500 rpm
SC28R143	0	Q5			105 kW (143 PS; 141 bhp) at 3600 rpm	340 N⋅m (251 lb⋅ft) at 1800–2500 rpm
SC28R143	1	Q5A			105 kW (143 PS; 141 bhp) at 3600 rpm	350 N⋅m (258 lb⋅ft) at 1800–2500 rpm
SC28R143	2	Q5A			105 kW (143 PS; 141 bhp) at 3600 rpm	380 N⋅m (280 lb⋅ft) at 1800–2500 rpm
SC28R150	0	Q5A			110 kW (150 PS; 148 bhp) at 3400 rpm	360 N⋅m (266 lb⋅ft) at 1600–2800 rpm
SC28R150	1	Q5A			110 kW (150 PS; 148 bhp) at 3400 rpm	380 N⋅m (280 lb⋅ft) at 1600–2800 rpm
SC28R150	0	Q6			110 kW (150 PS; 148 bhp) at 3000 rpm	400 N⋅m (295 lb⋅ft) at 1500–2400 rpm
SC28R156	0	Q5A			115 kW (156 PS; 154 bhp) at 3000 rpm	400 N⋅m (295 lb⋅ft) at 1800–2400 rpm

Applications

• Golden Dragon XML6700J15
• King Long Kaige/Kingo
• Joylong A-series
• Maxus T60 (2016-Present)
• Yuejin SH108 type 2

See also

• SDEC Engines