![]() ![]() Continuously variable valve timing optimizes the engine's turbocharging system by adjusting valve timing at lower rpm for improved turbo response and greater torque deliveryĬam phasing allows an outstanding balance of smooth torque delivery over a broad rpm range, high specific output and good specific fuel consumption. Overhead cams are the most direct, efficient means of operating the valves, while four valves per cylinder increase airflow in and out of the engine. A hydraulic tensioner keeps the timing chain adjusted for life, and extended-life spark plugs deliver 100,000 miles (160,000 km) of service. It features durability and technology features familiar in premium V-type engines, including low-friction hydraulic roller-finger valve operation and an electronic throttle. The Ecotec 2.4L engine is uses continuously variable valve timing to optimize performance, efficiency and emissions.
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