IndyCar to Debut Hybrid Power Unit this Year - Engine Builder Magazine

IndyCar to Debut Hybrid Power Unit this Year

IndyCar's new hybrid unit will pair with the 2.2L twin-turbocharged V6 engine used by the series and will debut at the Honda Indy 200, July 5-7.

The NTT IndyCar Series has confirmed the launch of its new hybrid power unit for later this year. Developed by IndyCar, Chevrolet and Honda, the hybrid unit will pair with the 2.2L twin-turbocharged V6 engine used by the series and make its competitive debut at Mid-Ohio Sports Car Course during the Honda Indy 200, July 5-7.

The hybrid system is made up of the low voltage (48V) Motor Generator Unit (MGU) and Energy Storage System (ESS) – consisting of 20 ultracapacitors – both of which fit inside the bellhousing, located between the Chevrolet and Honda IndyCar Series internal-combustion engine and the gearbox. During regeneration, acting on the clutch shaft, the MGU builds power to be stored in the ESS. The additional horsepower is deployed through the same motor generator on driver demand.

In competition, options for automatic regeneration via braking or throttle position and manual regeneration via selected steering wheel paddles and buttons will be available. Deployment of stored energy will only be available manually through a latching button, similar to the existing Push to Pass system, according to IndyCar.

While available to use in addition to the traditional Push to Pass system on road and street circuits, the two systems will come with different rules. Push to Pass will still have a restriction on the amount of time per use and total time used throughout a race. Rules for the hybrid power unit will limit the amount of energy deployed per lap – based on track length. Used in combination on road and street circuits, the added boost will provide an additional 120 hp for a total of 800-plus horsepower. Additional horsepower is expected in the coming years as hybrid unit development evolves, the series says.

A full-field test of IndyCar’s power unit is scheduled for June 11 at the Milwaukee Mile to allow teams to finalize implementation ahead of the July debut. For more information:

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