MSYS 3-speed system
The Evoque_E program will investigate the benefits of high-speed motors and multi-speed transmissions for hybrid and electric vehicles. The project will build three development vehicles based on Land Rover’s new Range Rover Evoque, in mild hybrid, full hybrid and pure EV configurations.
As either two or four cylinders are connected with the drive system, the thrifty power unit is called I2+2 engine
Two two-cylinder engines with a firing interval of 360 degrees, one of which can be completely disconnected from the powertrain whenever applicable. This reduces engine friction torque by 22 percent in the engine speed range relevant to consumption.
Design concept for the I2+2 engine
IAV’s concept drastically reduces friction and improves consumption over conventional approaches, such as cylinder deactivation (CDA) and continuously variable valve lift (CVVL).
The deactivated cylinders can be left idle.The new concept drastically reduces the engine’s friction torque: In the two-cylinder mode, it is 22 percent lower than for the base engine. Naturally, this has consequences for fuel consumption – reducing it by 13.7 percent in the NEDC, which equates to 19 grams of CO2 per kilometer. In cycle 2, which involvesfar higher loads, it falls by 6.2 percent, cutting CO2 emissions by 9 grams per kilometer.
ACIS (Acoustic Control Induction System)
The ACIS uses a bulkhead to divide the intake air chamber into two stages, with a intake air control valve in the
bulkhead to vary the effective length of the intake manifold. This increases the power output in all ranges from low
to high speeds.
This system is basically the same as the Intake Air Control System of the 7M–GE engine for the previous Toyota
VSV circuit for ACIS