Abstract: Presently, engine cooling pump is driven by toothed
belt. Therefore, the pump speed is dependent on engine speed which
varies their output. At normal engine operating conditions (Higher
RPM and low load, Higher RPM and high load), mechanical water
pumps in existing engines are inevitably oversized and so the use of
an electric water pump together with state-of-the-art thermal
management of the combustion engine has measurable advantages.
Demand-driven cooling, particularly in the cold-start phase, saves
fuel (approx 3 percent) and leads to a corresponding reduction in
emissions. The lack of dependence on a mechanical drive also results
in considerable flexibility in component packaging within the engine
compartment. This paper describes the testing and comparison of
existing mechanical water pump with that of the electric water pump.
When the existing mechanical water pump is replaced with the new
electric water pump the percentage gain in system efficiency is also
discussed.
Abstract: This paper deals with design of walking beam pendel
axle suspension system. This axles and suspension systems are
mainly required for transportation of heavy duty and Over Dimension
Consignment (ODC) cargo, which is exceeding legal limit in terms of
length, width and height. Presently, in Indian transportation industry,
ODC movement growth rate has increased in transportation of bridge
sections (pre-cast beams), transformers, heavy machineries, boilers,
gas turbines, windmill blades etc. However, current Indian standard
road transport vehicles are facing lot of service and maintenance
issues due to non availability of suitable axle and suspension to carry
the ODC cargoes. This in turn will lead to increased number of road
accidents, bridge collapse and delayed deliveries, which finally result
in higher operating cost. Understanding these requirements, this work
was carried out. These axles and suspensions are designed for
optimum self – weight with maximum payload carrying capacity with
better road stability.