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Cummins Quantum Series is a family of internal combustion engines, developed and manufactured by American Cummins for various heavy-duty use cases. The Quantum series comes with an electronic controlled module. It is used in heavy duty machines and in railway machines. [1] [2]
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The lineup consists of adaptations of F, B, L, X series and Quantum-only K series. There are also G12 and T30 engines in the lineup.
Vast majority of Quantum series engines are Diesel engines. Those are compared in the table below:
| Engine | Displacement | Bore | Stroke | Power | Torque | Governed Speed | Dry/Wet Weight |
|---|---|---|---|---|---|---|---|
| QSF2.8 I4 | 171 ci (2.78L) | 3.7 in (94 mm) | 3.94 in (100 mm) | 49 - 74 hp (37 - 55 kW) | 147 - 221 lb-ft (199 - 300 N*m) | ~ 507 lb (230 kg) | |
| QSF3.8 I4 | 230 ci (3.76L) | 4.02 in (102 mm) | 4.53 in (115 mm) | 74 - 130 hp (55 - 97 kW) | 277 - 360 lb-ft (376 - 488 N*m) | ~ 616 lb (280 kg ) | |
| QSB4.5 I4 | 275 ci (4.5L) | 4.02 in (102 mm) | 5.39 in (137 mm) | 109 - 173 hp (81 - 130 kW) | 347 - 520 lb-ft (470 - 705 N*m) | 3500 | ~ -/818 lb (-/371 kg) |
| QSB6.7 I6 | 409 ci (6.7L) | 4.21 in (107 mm) | 4.88 in (124 mm) | 133 - 550 hp (99 - 410 kW) | 431 - 1250 lb-ft (584 - 1695 N*m) | 3400 | ~ -/1047 lb (-/475 kg) |
| QSL9 I6 | 543 ci (8.9L) | 4.49 in (114 mm) | 5.69 in (145 mm) | 230 - 410 hp (172 - 306 kW) | 675 - 1200 lb-ft (915 - 1627 N*m) | 3300 | ~ 2153 lb (977 kg) |
| QSG12 I6 [lower-alpha 1] | 721 ci (11.8L) | 5.2 in (132 mm) | 5.67 in (144 mm) | 335 - 512 hp (250 - 382 kW) | 1700 lb-ft (2305 N*m) | 2600 | ~ 2227/- lb (1010/- kg) |
| QSX15 I6 | 912 ci (15L) | 5.39 in (137 mm) | 6.65 in (169 mm) | 400 - 675 hp (298 - 503 kW) | 1650 - 2050 lb-ft (2237 - 2779 N*m) | 2400 | ~ 3009/- lb (1365/- kg) |
| QSK19 I6 | 1150 ci (19L) | 6.25 in (159 mm) | 6.25 in (159 mm) | 506 - 800hp (377 - 597 kW) | 1775 - 2275 lb-ft (2407 - 3084 N*m) | 2400 | ~ -/4250 lb ( -/1928 kg) |
| QSK23 I6 | 1404 ci (23.2L) | 6.69 in (170 mm) | 6.69 in (170 mm) | 760 - 950 hp (567 - 708 kW) | 2401 - 2897 lb-ft (3255 - 3928 N*m) | 2100 | ~ -/6300 lb ( -/2858 kg) |
| QST30 V12 | 1861 ci (30.5L) | 5.51 in (140 mm) | 6.5 in (165 mm) | 760 - 1500 hp (567 - 1119 kW) | 2764 - 4877 lb-ft (3747 - 6612 N*m) | 2100 | ~ -/7337 lb ( -/3328 kg) |
| QSK38 V12 | 2300 ci (38L) | 6.25 in (159 mm) | 6.25 in (159 mm) | 920 - 1500 hp (686 - 1119 kW) | 3591 - 4590 lb-ft (4869 - 6224 N*m) | 2100 | ~10700 lb (4850 kg) |
| QSK45 V12 | 2746 ci (45L) | 6.25 in (159 mm) | 7.48 in (190mm) | 1200 - 2250 hp (895 - 1678 kW) | 4425 - 6300 lb-ft (5999 - 8542 N*m) | 2100 | ~ -/13500 lb ( -/6123 kg) |
| QSK50 V16 | 3068 ci (50.25L) | 6.25 in (159 mm) | 6.25 in (159 mm) | 1487 - 2500 hp (1109 - 1864 kW) | 1800 - 7080 lb-ft (2440 - 9599 N*m) | 2000 | ~ 13,822/14808 lb (6270/6717 kg) |
| QSK60 V16 | 3661 ci (60.2L) | 6.25 in (159 mm) | 7.48 in (190 mm) | 1050 - 2850 hp (783 - 2125 kW) | 6169 - 7839 lb-ft (8364 - 10628 N*m) | 1900 | ~ 19258 lb (8754 kg) |
| QSK78 V18 | 4735 ci (77.6L) | 6.69 in (170 mm) | 7.48 in (190 mm) | 3500 hp (2610 kW) | 10157 lb-ft (14077 N*m) | 1900 | ~ -/24134 lb (-/10947 kg) |
| QSK95 V16 | 5797 ci (95L) | 7.48 in (190 mm) | 8.27 in (210 mm) | 3000 - 5100 hp (2237 - 3803 kW) | 11671 - 17802 lb-ft (15824 - 24136 N*m) | 1800 | ~ 29000 lb (13200 kg) |
| QSK120 V20 | 7246 ci (119L) | 7.48 in (190 mm) | 8.27 in (210 mm) | 5000+ hp (3730+ kW) | 1500 |
Natural gas engines also exist.
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