Acura AR24e engine

The Acura AR24e engine is a twin-turbocharged, four-stroke, 2.4-liter, V6 racing engine, made by Honda Racing Corporation USA (HRC US) for use in their Acura ARX-06 LMDh race car, since 2023.^[1]

Acura AR24e engine
Overview
Manufacturer	Honda Racing Corporation USA
Production	2023–present
Layout
Configuration	90° V6
Displacement	2.4 litres (146 cubic inches)
Cylinder block material	Aluminium alloy
Cylinder head material	Aluminium alloy
Valvetrain	24-valve (four-valves per cylinder), DOHC
RPM range
Max. engine speed	10,000
Combustion
Turbocharger	Twin-turbocharged
Fuel system	Gasoline direct injection
Management	Bosch ECU
Fuel type	VP Racing Fuels
Oil system	Dry sump
Output
Power output	500 kW (671 hp; 680 PS)

Design

Honda Performance Development, now Honda Racing Corporation USA, developed the bespoke engine for the new-for-2023 ARX-06 LMDh featuring the smallest displacement that HRC US has made for an endurance racing engine. Optimizations include the 90° V-angle, to reduce the center of gravity of the engine and the combustion chamber can use sustainable low-carbon fuel.^[2][3] In accordance with the LMDh rules, the AR24e internal combustion engine is connected to the standardized hybrid drivetrain components provided by Bosch (motor generator unit), Williams Advanced Engineering (battery pack), and an Xtrac P1359 gearbox.^[4]

Applications

• Acura ARX-06