|The direct injected 2.0 L turbocharged four-cylinder engine, with an estimated 270 horsepower (201 kW), will be among the powertrain options available in the all-new 2013 Cadillac ATS compact luxury sedan. Click to enlarge.|
GM will debut a new high-performance 2.0L turbocharged four-cylinder engine in the new 2013 Cadillac ATS compact luxury sedan, which will be revealed at the 2012 North American International Auto Show in January.
The Cadillac-tuned, direct-injected engine will produce an estimated 270 horsepower (201 kW). At 135 horsepower per liter, it will be one of the most power-dense automotive engines, besting the highest-performing engines from luxury competitors such as Audi, BMW and Mercedes, GM notes.
The 2.0T is a new engine, designed from the ground up, said Mike Anderson, Chief Engineer on the 2.0T; the top priority was improved efficiency, which was achieved in large part by friction reduction. Overall engine friction is reduced by up to 16%; the low-friction design means engine power is delivered more efficiently.
Among the 2.0T engine’s highlights: a direct-injection twin-cam, four-valve-per-cylinder engine with continuously variable valve timing; twin-scroll turbocharger with air-to-air intercooler; forged-steel crankshaft with modular balance shaft system; and a computer controlled two-stage variable-displacement oil pump with jet-spray piston cooling.
Proprietary computational fluid dynamics analysis techniques were used to develop an all-new combustion system with a higher compression ratio, which also helped boost efficiency.
The 2.0T has a wide torque curve, delivering 90% of its peak 260 lb-ft of torque (353 N·m) from 1,500 rpm to 5,800 rpm. The turbocharger generates up to 20 pounds of boost and its twin-scroll design helps optimize power availability, virtually eliminating turbo lag and helping deliver a broad power band.
At 135 hp/L, the ATS 2.0T four-cylinder turbo engine has the highest power density among key competitors, including:
- Audi A4’s 2.0L turbo (105.5 hp/L)
- BMW M3’s V-8 (103.5 hp/L)
- Lexus IS F’s V-8 (83.2 hp/L)
- Mercedes-Benz C250’s 1.8L turbo (111.6 hp/L)
The new 2.0T highlights a broad engine lineup that will power the ATS which is slated to begin production next summer. Cadillac will also offer a normally aspirated 2.5L four cylinder engine and a 3.6L V-6 engine in the ATS.
Additional details on the ATS will be announced at the 2012 NAIAS. The ATS will be built at the Lansing Grand River plant alongside the Cadillac CTS Sedan, Coupe and Sport Wagon and V-Series performance cars.