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GM Ecotec Diesel (1997)
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] VariantsThe 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 82 hp (61 kW) version was soon replaced by the smaller and unrelated 1.7 litre Circle L engine. The higher powered version produced 100 hp (75 kW) and 230 N⋅m (170 lb⋅ft) of torque.[2] The 2.2 engine was introduced as a 115 hp (86 kW) unit, but in late 2000 was updated to 125 hp (93 kW) with 280 N⋅m (207 lb⋅ft) of torque from just 1,500 rpm, rather than the previous 260 N⋅m (192 lb⋅ft) 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[broken anchor]. Engine CodesGM 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. Applications
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