| CFM56-7B18 ✕ | CFM56-7B20/3 ✕ | CFM56-7B20E ✕ | CFM56-7B22/2 ✕ | |
|---|---|---|---|---|
| Family | CFM56-7B | CFM56-7B | CFM56-7B | CFM56-7B |
| EASA ID | 3CM029 | 8CM062 | 01P11CM111 | 4CM040 |
| Aircraft Engine Manufacturer | CFM International | CFM International | CFM International | CFM International |
| Aircraft Engine Type | Turbofan | Turbofan | Turbofan | Turbofan |
| Comment | Boeing 737 Next Generation | Boeing 737 Next Generation | Boeing 737 Next Generation | Boeing 737 Next Generation |
| Dry Weight (kg) | 2366 | 2366 | 2366 | 2366 |
| Diameter (mm) | 1549 | 1549 | 1549 | 1549 |
| Max Rotating Diameter (mm) | 1549 | 1549 | 1549 | 1549 |
| Length (mm) | 2507 | 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 | en.wikipedia.org/wiki/CFM_International_CFM56 |
| Fuel | Jet A | Jet A | Jet A | Jet A |
| Fan Blades | 24 | 24 | 24 | 24 |
| Geared Fan | No | No | No | No |
| Low-Pressure Compressor Stages | 3 | 3 | 3 | 3 |
| High-Pressure Compressor Stages | 9 | 9 | 9 | 9 |
| Combustion Chamber | Tech Insertion | Tech Insertion | ||
| High Pressure Compressor Stages | 1 | 1 | 1 | 1 |
| Low-Pressure Turbine Stages | 4 | 4 | 4 | 4 |
| Afterburner | No | No | No | No |
| Streams | 2 | 2 | 2 | 2 |
| Bypass Ratio | 5.5 | 5.5 | 5.5 | 5.3 |
| Overall Pressure Ratio | 21.59 | 22.4 | 22.4 | 24.61 |
| Maximum Takeoff Thrust (kN) | 86.74 | 91.6 | 91.6 | 100.97 |
| Hydrocarbon Take Off (g/kg fuel) | 0.1 | 0.03 | 0.03 | 0.06 |
| Hydrocarbon Climb Out (g/kg fuel) | 0.1 | 0.03 | 0.03 | 0.1 |
| Hydrocarbon Approach (g/kg fuel) | 0.1 | 0.08 | 0.08 | 6.06 |
| Hydrocarbon Idle (g/kg fuel) | 3.5 | 3.84 | 3.84 | 7.26 |
| Hydrocarbon Unitary Average (g/kN) | 6.32 | 6.26 | 6.26 | 16.31 |
| Hydrocarbon Unitary Sigma (g/kN) | 0.63 | 0.63 | ||
| Hydrocarbon Unitary Range (g/kN) | 5.55-6.69 | 5.55-6.69 | 14.6-18.2 | |
| Hydrocarbon Unitary Characteristic (g/kN) | 9.7 | 7.31 | 7.31 | 19 |
| Hydrocarbon Unitary Characteristicto Regulatory (% of limit) | 49.5 | 37.3 | 37.3 | 97.1 |
| Hydrocarbon LTO (g) | 549 | 574 | 572 | 1643 |
| Carbon Monoxide Take Off (g/kg fuel) | 0.6 | 0.15 | 0.15 | 2.18 |
| Carbon Monoxide Climb Out (g/kg fuel) | 0.4 | 0.23 | 0.23 | 6.58 |
| Carbon Monoxide Approach (g/kg fuel) | 3.6 | 5.03 | 5.03 | 30.87 |
| Carbon Monoxide Idle (g/kg fuel) | 28.3 | 43.31 | 43.31 | 45.35 |
| Carbon Monoxide Unitary Average (g/kN) | 52.45 | 73.44 | 73.44 | 104.18 |
| Carbon Monoxide Unitary SD (g/kN) | 3.2 | 3.2 | ||
| Carbon Monoxide Unitary Range (g/kN) | 69.8-75.3 | 69.8-75.3 | 96.9-111.7 | |
| Carbon Monoxide Unitary Characteristic (g/kN) | 64.4 | 79.4 | 79.4 | 112.7 |
| Carbon Monoxide Unitary Characteristicto Regulatory (% of limit) | 54.6 | 67.3 | 67.3 | 95.5 |
| NOx Take Off (g/kg fuel) | 19.2 | 15.61 | 15.61 | 15.08 |
| NOx Climb Out (g/kg fuel) | 16.6 | 13.53 | 13.5 | 12.16 |
| NOx Approach (g/kg fuel) | 9.1 | 7.98 | 8 | 6.37 |
| NOx Idle (g/kg fuel) | 4.3 | 3.77 | 3.8 | 3.94 |
| NOx Unitary Average (g/kN) | 39.99 | 32.59 | 32.59 | 30.63 |
| NOx Unitary SD (g/kN) | 1.1 | 1.1 | ||
| NOx Unitary Range (g/kN) | 31.5-33.7 | 31.5-33.7 | 30.4-30.9 | |
| NOx Unitary Characteristic (g/kN) | 46.4 | 34.5 | 34.5 | 32.4 |
| NOx Unitaryto Standard (% of limit) | 55.8 | 40.7 | 40.7 | 36.4 |
| NOx Unitaryto CAEP2 (% of limit) | 69.7 | 50.9 | 50.9 | 45.4 |
| NOx Unitaryto CAEP4 (% of limit) | 85.8 | 62.9 | 62.9 | 55.6 |
| NOx Unitaryto CAEP6 (% of limit) | 97 | 71.5 | 71.5 | 63.1 |
| NOx Unitaryto CAEP8 (% of limit) | 118.4 | 87.5 | 87.5 | 76.2 |
| NOx LTO (g) | 3472 | 2987 | 2987 | 3091 |
| Smoke Take Off (SN) | 10.7 | 8.7 | 8.7 | 0.7 |
| Smoke Climb Out (SN) | 6.4 | 6.8 | 6.8 | 0.7 |
| Smoke Approach (SN) | 0 | 2.1 | 2.1 | 0.7 |
| Smoke Idle (SN) | 0 | 2.1 | 2.1 | 0.7 |
| Smoke Max (SN) | 10.7 | 8.66 | 8.66 | 0.69 |
| Smoke Sigma (SN) | 2.2 | 2.2 | ||
| Smoke Range (SN) | 7.1-11.1 | 7.1-11.1 | 0.1-1.8 | |
| Smoke Characteristic (SN) | 13.8 | 9.52 | 9.52 | 0.8 |
| Smoke Characteristicto Regulatory (% of limit) | 56.1 | 39.3 | 39.3 | 3.2 |
| Fuel Flow Take Off (kg/s) | 0.854 | 0.896 | 0.896 | 1.008 |
| Fuel Flow Climbout (kg/s) | 0.714 | 0.746 | 0.746 | 0.837 |
| Fuel Flow Approach (kg/s) | 0.26 | 0.268 | 0.268 | 0.303 |
| Fuel Flow Idle (kg/s) | 0.097 | 0.094 | 0.094 | 0.105 |
| Fuel LTO (kg) | 344 | 348 | 348 | 389 |
| Fuel Venting Compliant | No | Yes | Yes | No |
| Carbon Monoxide LTO (g) | 4566 | 6729 | 6729 | 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 | 1 fan, 3-stage LP, 9-stage HP |
| Emissions Data Status | C | C | C | C |
| Engine Status | Out of production | Out of production | Out of production | Out of production |
| NOx Compliance Demonstration | 2.3.2 e) | 2.3.2 e) | ||
| nvPME Imass Approach (mg/kg) | 0.95 | |||
| nvPME Imass Climb Out (mg/kg) | 22.7 | |||
| nvPME Imass Idle (mg/kg) | 0.91 | |||
| nvPME Imass Max (mg/kg) | 33.5 | |||
| nvPME Imass Take Off (mg/kg) | 33.5 | |||
| nvPME Inum Approach (#/kg) | 39300000000000 | |||
| nvPME Inum Climb Out (#/kg) | 360000000000000 | |||
| nvPME Inum Idle (#/kg) | 56300000000000 | |||
| nvPME Inum Max (#/kg) | 420000000000000 | |||
| nvPME Inum Take Off (#/kg) | 422000000000000 | |||
| nvPMLTO Mass (mg) | 3691 | |||
| nvPMLTO Mass Per Thrust (mg/kN) | 56 | |||
| nvPMLTO Mass To CAEP11 (% of limit) | 9.1 | |||
| nvPMLTO Number (#) | 62100000000000000 | |||
| nvPMLTO Number Per Thrust (#/kN) | 942000000000000 | |||
| nvPMLTO Number To CAEP11 (% of limit) | 12.6 | |||
| nvPM Mass Concentration Characteristic (mg/m³) | 910 | |||
| nvPM Mass Concentration Max (mg/m³) | 707 | |||
| nvPM Mass Concentration To CAEP10 (% of limit) | 13.1 | |||
| Turbine Description | 1-stage HP, 4-stage LP | 1-stage HP, 4-stage LP | 1-stage HP, 4-stage LP | 1-stage HP, 4-stage LP |