| GM Ecotec 2.0DTI/2.2DTI | |
| Manufacturer: | General Motors |
| Production: | 1997-2005 |
| Configuration: | Inline-4 |
| Displacement: | NaNcc |
| Valvetrain: | SOHC 4 valves x cyl. |
| Fuelsystem: | Direct injection |
| Operating Principle: | Diesel |
| Turbocharger: | Garrett, Variable Geometry for 2.2 from 2001, intercooler |
| Head: | Aluminium |
| Fueltype: | Diesel |
| Oilsystem: | Wet sump |
| Coolingsystem: | Water-cooled |
| Power: | NaN0NaN0 |
| Emissions Level: | Euro 3 |
| Successor: | Fiat JTD engine (CDTI) |
GM referred to many of its diesel engines as Ecotec including the GM Medium Diesel engine (2013 onwards) and the Isuzu-derived Circle L engine. This page describes the SOHC 16 valve turbocharged engines which GM introduced in 1997.[1] and which were used extensively in its European models.
The engines used a single chain-driven camshaft and an aluminium cylinder head with a Bosch rotary high pressure injection pump.[2]
The 2.0 engine was available in two different power outputs, badged by Vauxhall Di and DTi, the lower powered version retaining 16 valves and a turbocharger, but lacking the intercooler.[3] The lower powered 82hp version was soon replaced by the smaller and unrelated 1.7 litre Circle L engine. The higher powered version produced 100hp and 2300NaN0 of torque.
The 2.2 engine was introduced as a 115hp unit, but in late 2000 was updated to 125hp with 2800NaN0 of torque from just 1,500 rpm, rather than the previous 2600NaN0 from 1,900 rpm. The update also included changes to the camshaft and pistons, and the newer unit was smoother.[4] This update also introduced pilot injection[5] and a variable geometry turbocharger[6]
These engines were replaced by the 1.9 litre GM/Fiat JTD.
GM referred to these engines using a six-character code, such as Y20DTH. The first letter is X for Euro 2 engines, and Y for those meeting the Euro 3 emissions standard. The two digits are 20 for 2 litres (actually 1,995 cc), and 22 for 2.2 litres (actually 2,171 cc). The next two letters are always DT. The final letter is L if it lacks an intercooler, H if it has an intercooler, and R if it has both an intercooler and a variable geometry turbocharger.
Saab referred to the engine as a D223L, regardless of whether it was a Y22DTH or a Y22DTR.