Hyundai Introduces Advanced CVVD Engine for SonataJuly 4, 2019
In the new internal combustion engine for the South Korean Hyundai Sonata technology is implemented continuously variable valve duration (CVVD). The motor has 4% more performance, 5% more fuel efficiency and emits 12% less emissions.
The CVVD technology presented by South Korean brand engineers works as follows: when a car moves at a constant speed and requires little power, CVVD opens the intake valve from the middle to the end of the compression stroke, increasing efficiency by reducing the resistance caused by compression. When the acceleration and engine power is high, the intake valve closes at the beginning of the compression stroke, which maximizes the amount of air used during ignition of the fuel mixture to improve torque.
The CVVD system will be available on the Smartstram G1.6 T-GDi four-cylinder engine, which develops an impressive 180 hp. power and 195 Nm of torque, and the Sonata will be the first model to use it.
Along with CVVD, the new engine includes low-pressure exhaust gas recirculation and a new integrated temperature control system for quickly heating and cooling the engine to the optimum operating temperature.
“The development of CVVD technology is a good example of how the Hyundai Motor Group is strengthening its engine development technology,” said Albert Birmann, president and head of research and development at Hyundai Motor Group. “We will continue our innovative efforts to change the paradigm and ensure the sustainability of our business model.”
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