Honda N-Series diesel engines

The N series is Honda's first diesel engine. It is a four-cylinder common-rail diesel engine for medium sized Honda vehicles. It features the ubiquitous Common Rail Direct Injection configuration which Honda brands as their i-CTDi (Intelligent Commonrail Turbocharged Direct injection). The most notable feature is the aluminum block, which uses proprietary technology to the manufacturing process of the cylinder block, and provides both light weight and high rigidity. The valvetrain is a DOHC style with chain driven camshafts. The Fuel System is a high-pressure (1600bar) Common rail direct injection type with a variable geometry turbocharger with intercooler.

N22A:
The i-CTDi engine uses a variable nozzle turbocharger from Honeywell. It enables strong power from about 1500 rpm.

Specifications:
Bore & Stroke: 85.0 mm x 97.1 mm
Cylinder Layout: inline 4
Displacement: 2204 cm3
Valve Configuration: 16 valve DOHC
Type: i-CTDi
Compression ratio: 16.7:1
Max boost: 13.5 PSI (0.93 BAR)
Max power: 140 HP @ 4000 rpm
Max torque: 340 NM @ 2000 rpm
Redline: 4500 rpm

Accord (CN1)
Accord Tourer (CN2)
FR-V: (Edix in Japan) (BE5)
CR-V (ED9/RE6)
Civic (FK3 / FN3)

N22B:
Whilst the N22A has the exhaust ports on the front of the engine, the N22B has the new standard front intake/rear exhaust port configuration. The stroke has been slightly reduced to qualify for sub-2200 cm3 engine displacement, for tax and registration purposes in some jurisdictions.

Specifications
Bore & Stroke: 85.0 mm x 96.9 mm
Cylinder Layout: inline 4
Displacement: 2199 cm3
Valve Configuration: 16 valve DOHC
Type: i-DTEC
Compression ratio: 16.3:1
Max power: 148 HP @ 4000 rpm
Max torque: 350 NM @ 2000 rpm

Meets Euro 5 emissions standards

N22A

N22B