China Tube Bearing Assembly Manufacturer – Cummins QSNT855 Engine Assembly – Raptors

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China Tube Bearing Assembly Manufacturer – Cummins QSNT855 Engine Assembly – Raptors Detail:

Porduct application

NTA855 has many uses. It can be equipped with generator sets. For example, it can be equipped with generator sets for ships. It can also be equipped with vehicles. If equipped with vehicles, it is mainly construction machinery, bulldozers, excavators, cranes, etc.

Advanced design and reliable performance:
Cylinder block: made of high-strength alloy cast iron, with good rigidity, low vibration and low noise.
Cylinder head: Four-valve design per cylinder, optimized air/fuel mixture ratio, effectively improving combustion and emissions; one head per cylinder, easy maintenance.
Camshaft: The single camshaft design can accurately control the valve and injection timing, and the optimized cam profile can reduce the impact force and improve the reliability and durability.
Crankshaft: Integral crankshaft made of high-strength forged steel. The induction hardening process of fillet and journal can ensure higher fatigue strength of the crankshaft.
Piston: Using the latest aluminum alloy casting technology, the design of ω-shaped head and barrel-shaped skirt can compensate for thermal expansion and contraction to ensure a good fit.

Now we take NTA855-G1 as an example, analyze the specific parameters of this engine

NTA855-G1 Cummins engine parameters

Engine performance parameters	STANDBY ENGINE		PRIME ENGINE
	60HZ	50HZ	60HZ	50HZ
Engine speed r/min	1800	1500	1800	1500
Output Power kW(BHP)	317	265	287	240
Mean effective pressure kPa(psi)	1510	1510	1358	1379
Piston average speed m/s(ft/min)	9.1	7.6	9.1	7.6
Maximum parasitic power Kw(HP)	44	33	44	33
Cooling water flow L/s(US gpm)	7.8	6.4	7.8	6.4
Engine parameters with dry exhaust pipe:
Engine net power kW(BHP)	302	256	272	231
Intake air flow L/s(cfm)	463	345	425	321
Exhaust gas temperature ℃(℉)	543	541	460	532
Exhaust air flow L/s(cfm)	1253	949	1029	878
Radiant heat energy kWm(BTU/min)	50	41	45	37
Cooling water takes away heat kWm(BTU/min)	202	169	183	153
Exhaust takes away heat kWm(BTU/min)	281	233	259	207
Fan air flow L/s(cfm)	9808	8161	9808	8161
Engine parameters with wet exhaust pipe
Engine net power kW(BHP)	302	256	272	231
Intake air flow L/s(cfm)	463	326	425	302
Exhaust gas temperature ℃(℉)	496	552	474	510
Exhaust air flow L/s(cfm)	1053	852	1029	753
Radiant heat energy kWm(BTU/min)	41	34	38	31
Cooling water takes away heat kWm(BTU/min)	247	206	223	187
Exhaust takes away heat kWm(BTU/min)	255	207	220	185
Fan air flow L/s(cfm)	9808	8161	9808	8161

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