Continental Aerospace Technologies currently offers the widest range of certified diesel engines in GA. Continental has delivered more than 6,000 engines which have logged over 7.1 million flight hours. Continental diesels are grouped in three series: CD100, CD-200 and CD-300.
The CD-100 series includes former Thielert Centurion engines of 135 and 155hp which today are called CD-135 and CD-155. These are four-cylinder, in-line engines with automotive roots. Fitted with turbochargers, they are liquid cooled, have charge intercoolers and FADEC (full-authority digital engine control) and use a PSRU (propeller speed reduction unit).
The CD-200 series includes the former TD-300 series engines, which are based on developed versions of the SMA engine. The CD-230 and CD-265 offer 234 and 265hp respectively. Helicopter versions (where ‘R’ stands for Rotor craft), the CDR-265 and 285 offer 264 and 287hp. These four-cylinder, opposed engines are of conventional aero engine layout, are direct-drive, air (and oil) cooled, have exhaust turbocharger, and mechanical fuel injection (no electronics!)
In 2017 Continental introduced the CD-300, a V6, 3.0 lit diesel engine producing 300hp. Like the CD-100S, it also has automotive roots. Two exhaust turbochargers are fitted (one per cylinder bank) and the unit has dual FADECS, single lever power control and a geared PSRU. It is EASA certified.
The ex-thielert eight-cylinder, 310hp certified Centurion 4.0 lit has been discontinued.
The CD-100 series diesel engines have overcome teething problems with PSRU and the TBR (time between replacement, note) has risen to 2,100 hours. The maintenance intervals for the CD-100 series were extended significantly following the introduction of a new flywheel and clutch unit (effectively the torsional vibration damper) in 2010. www.continentalmotors.aero/ diesel
This engine from the UK, manufactured by CKT Aero Engines ltd, was showcased two years ago at AERO in Germany. The four cylinder, liquid-cooled, opposed, geared engine, with 2.0 litre displacement develops 240hp (takeoff)/200hp (continuous) and is based on the Subaru EE20 automotive engine. The CKT-240TD has four valves per cylinder and is fitted with turbocharger, intercoolers and radiator. It has singlelever FADEC operation, dual alternators and programmable ECU. The competitively priced engine package weighs in total 230kg, is now in series production and is delivered as a firewall-forward assembly complete with engine mount, targeted at the homebuilder/ Experimental market. The engine can be operated on Jet A1 or automotive diesel fuel. www.cktaeroengines.com
CD-155: 155hp baby of the family
CD-265: Sma-based, 265hp
CD-300: liquid-cooled 300hp V6
Based on the Subaru car engine