In addition to gaining experience with building robust, fast, and powerful geartrains
using LEGO, this assignment gives students an opportunity to creatively explore the capabilities of the materials in the kit.
Using a double geartrain
, the transmission is actuated through a self-contained hydraulic clutch which is connected to the engine flywheel through a single-step hydrodynamic torque converter.
The engine will also have a rear geartrain
with pad-mounted accessories for lower noise and a gear-driven air compressor and power steering pump.
Both platforms have a block-type cylinder head and the geartrain
is located on the flywheel side for ease of installation and noise benefits.
Other key features of International's modern Big Bore diesel include a direct-injection, high-pressure common rail electronic fuel system capable of multiple injection events; a single-overhead-cam actuating four valves per cylinder and roller rocker arms; a gear-driven air compressor and power steering pump and a rear geartrain
and pad-mounted accessories designed for low noise.
* A rear-mounted geartrain
with a camshaft damper that drives the overhead camshaft, air compressor and power steering pump.
and feature the four valves per cylinder, rear geartrain
and bedplate construction of the JCB444 family.
Other design features of the two new models include single-side serviceability as the location of the flywheel and geartrain
has allowed the flexibility for the addition of external maintenance components on one side.
The package includes noise optimization of the geartrain
, pistons, valve cover and cooling air duct.
Saxman also cited the rear-mounted geartrain
as one of the major changes from previous Volvo designs.
He added that rear geartrain
bushings have also been modified to improve service life.
This also included the addition of rubber joints between the gasket joint, head and valve cover and insulation on the water pump cover and inside the geartrain
. The cylinder block and head were also stiffened, Cat said.