Pratt & Whitney, Japan Aero Engines Corp., and MTU Aero Engines AG will collaborate to provide the PurePower PW1100G-JM engine for the Airbus A320neo program. Under the collaboration agreement, MTU will hold an 18% share and be responsible for the low-pressure turbine and participate jointly with P&W in the high-pressure compressor. JAEC will hold a 23% share and be responsible for the fan, low pressure compressor, and combustor/diffuser. P&W will be responsible for the remainder of the engine and systems integration. The PurePower PW1000G series engines use an advanced gear system allowing the engine's fan to operate at a different speed than the low-pressure compressor and turbine.