Freelander System Description and Operation
ENGINE - K SERIES KV6
12-3-16 DESCRIPTION AND OPERATION
Throttle Body Assembly
The throttle body is an electrically actuated unit controlled by the Engine Control Module (ECM). The position of the
throttle plate is controlled by a DC motor and a return spring integrated into the throttle body. Two feedback
potentiometers supply throttle plate position signals to the ECM for closed loop control.
Four Torx bolts secure the throttle body to the inlet manifold chamber. A rubber seal, keyed into a groove in the inlet
manifold chamber, ensures the joint is air tight.
Inlet Manifold Chamber
The inlet manifold chamber is a sealed plastic assembly. The inlet manifold chamber combines plenum resonance for
good low speed torque, with variable length primary tracts for optimum mid and high speed torque.
The throttle body assembly feeds into a 'Y' piece which separates into two secondary inlet pipes. The secondary pipes
feed into two main plenums, one for each bank of three cylinders. At the closed end of the plenums is a balance valve,
controlled by an electric actuator, that connects the two plenums together.
The variable intake system uses valves and actuators to vary the overall tract length of the inlet manifold chamber.
The aluminium alloy inlet manifolds are sealed to each cylinder head with gaskets and to the inlet manifold chamber
with 'O' rings and seals.
MANIFOLD AND EXHAUST SYSTEM - K SERIES KV6, DESCRIPTION AND OPERATION, Description.