| CFM56-7B18/3 ✕ | CFM56-7B20 ✕ | CFM56-7B22/2 ✕ | |
|---|---|---|---|
| Family | CFM56-7B | CFM56-7B | CFM56-7B |
| EASA ID | 8CM061 | 3CM030 | 4CM040 |
| Aircraft Engine Manufacturer | CFM International | CFM International | CFM International |
| Aircraft Engine Type | Turbofan | Turbofan | Turbofan |
| Comment | Boeing 737 Next Generation | Boeing 737 Next Generation | Boeing 737 Next Generation |
| Dry Weight (kg) | 2366 | 2366 | 2366 |
| Diameter (mm) | 1549 | 1549 | 1549 |
| Max Rotating Diameter (mm) | 1549 | 1549 | 1549 |
| Length (mm) | 2507 | 2507 | 2507 |
| Wikipedia Article (URL) | en.wikipedia.org/wiki/CFM_International_CFM56 | en.wikipedia.org/wiki/CFM_International_CFM56 | en.wikipedia.org/wiki/CFM_International_CFM56 |
| Fuel | Jet A | Jet A | Jet A |
| Fan Blades | 24 | 24 | 24 |
| Geared Fan | No | No | No |
| Low-Pressure Compressor Stages | 3 | 3 | 3 |
| High-Pressure Compressor Stages | 9 | 9 | 9 |
| Combustion Chamber | Tech Insertion | ||
| High Pressure Compressor Stages | 1 | 1 | 1 |
| Low-Pressure Turbine Stages | 4 | 4 | 4 |
| Afterburner | No | No | No |
| Streams | 2 | 2 | 2 |
| Bypass Ratio | 5.5 | 5.4 | 5.3 |
| Overall Pressure Ratio | 21.4 | 22.61 | 24.61 |
| Maximum Takeoff Thrust (kN) | 86.7 | 91.63 | 100.97 |
| Hydrocarbon Take Off (g/kg fuel) | 0.03 | 0.1 | 0.06 |
| Hydrocarbon Climb Out (g/kg fuel) | 0.03 | 0.1 | 0.1 |
| Hydrocarbon Approach (g/kg fuel) | 0.08 | 0.1 | 6.06 |
| Hydrocarbon Idle (g/kg fuel) | 4.51 | 3.1 | 7.26 |
| Hydrocarbon Unitary Average (g/kN) | 7.56 | 5.44 | 16.31 |
| Hydrocarbon Unitary Sigma (g/kN) | 0.72 | ||
| Hydrocarbon Unitary Range (g/kN) | 6.74-7.99 | 14.6-18.2 | |
| Hydrocarbon Unitary Characteristic (g/kN) | 8.82 | 8.4 | 19 |
| Hydrocarbon Unitary Characteristicto Regulatory (% of limit) | 45 | 42.9 | 97.1 |
| Hydrocarbon LTO (g) | 656 | 504 | 1643 |
| Carbon Monoxide Take Off (g/kg fuel) | 0.17 | 0.6 | 2.18 |
| Carbon Monoxide Climb Out (g/kg fuel) | 0.28 | 0.5 | 6.58 |
| Carbon Monoxide Approach (g/kg fuel) | 5.54 | 3.2 | 30.87 |
| Carbon Monoxide Idle (g/kg fuel) | 46.64 | 25.9 | 45.35 |
| Carbon Monoxide Unitary Average (g/kN) | 81.34 | 47.21 | 104.18 |
| Carbon Monoxide Unitary SD (g/kN) | 3.3 | ||
| Carbon Monoxide Unitary Range (g/kN) | 77.6-83.5 | 96.9-111.7 | |
| Carbon Monoxide Unitary Characteristic (g/kN) | 88 | 58 | 112.7 |
| Carbon Monoxide Unitary Characteristicto Regulatory (% of limit) | 74.6 | 49.2 | 95.5 |
| NOx Take Off (g/kg fuel) | 14.81 | 20.5 | 15.08 |
| NOx Climb Out (g/kg fuel) | 13 | 17.4 | 12.16 |
| NOx Approach (g/kg fuel) | 7.78 | 9.5 | 6.37 |
| NOx Idle (g/kg fuel) | 3.65 | 4.3 | 3.94 |
| NOx Unitary Average (g/kN) | 31.46 | 41.83 | 30.63 |
| NOx Unitary SD (g/kN) | 1.1 | ||
| NOx Unitary Range (g/kN) | 30.4-32.5 | 30.4-30.9 | |
| NOx Unitary Characteristic (g/kN) | 33.3 | 48.5 | 32.4 |
| NOx Unitaryto Standard (% of limit) | 40.2 | 56.9 | 36.4 |
| NOx Unitaryto CAEP2 (% of limit) | 50.3 | 71.1 | 45.4 |
| NOx Unitaryto CAEP4 (% of limit) | 62 | 87.9 | 55.6 |
| NOx Unitaryto CAEP6 (% of limit) | 70 | 99.9 | 63.1 |
| NOx Unitaryto CAEP8 (% of limit) | 85.5 | 122.1 | 76.2 |
| NOx LTO (g) | 2729 | 3829 | 3091 |
| Smoke Take Off (SN) | 8 | 11.4 | 0.7 |
| Smoke Climb Out (SN) | 6.6 | 8 | 0.7 |
| Smoke Approach (SN) | 2.1 | 0 | 0.7 |
| Smoke Idle (SN) | 2.1 | 0 | 0.7 |
| Smoke Max (SN) | 8.04 | 11.4 | 0.69 |
| Smoke Sigma (SN) | 1.4 | ||
| Smoke Range (SN) | 6.8-9.6 | 0.1-1.8 | |
| Smoke Characteristic (SN) | 8.84 | 14.7 | 0.8 |
| Smoke Characteristicto Regulatory (% of limit) | 35.9 | 60.6 | 3.2 |
| Fuel Flow Take Off (kg/s) | 0.842 | 0.913 | 1.008 |
| Fuel Flow Climbout (kg/s) | 0.702 | 0.761 | 0.837 |
| Fuel Flow Approach (kg/s) | 0.256 | 0.274 | 0.303 |
| Fuel Flow Idle (kg/s) | 0.092 | 0.1 | 0.105 |
| Fuel LTO (kg) | 333 | 361 | 389 |
| Fuel Venting Compliant | Yes | No | No |
| Carbon Monoxide LTO (g) | 7055 | 4324 | 10492 |
| Compressor Description | 1 fan, 3-stage LP, 9-stage HP | 1 fan, 3-stage LP, 9-stage HP | 1 fan, 3-stage LP, 9-stage HP |
| Emissions Data Status | C | C | C |
| Engine Status | Out of production | Out of production | Out of production |
| NOx Compliance Demonstration | 2.3.2 e) | ||
| Turbine Description | 1-stage HP, 4-stage LP | 1-stage HP, 4-stage LP | 1-stage HP, 4-stage LP |