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Technical Paper

A Simulation of a Motorgrader Blade Lift Circuit

A mathematical model was developed to analyze an instability problem in a developmental motorgrader blade circuit. This dynamic computer model was verified when simulation results compared well to measured data. Solutions to the problem were found with the model. The best solution was verified with a vehicle test. This circuit included a variable pump, an implement valve, a lock valve, and a cylinder.
Technical Paper

Advanced Technology Fuel System for Heavy Duty Diesel Engines

Caterpillar Fuel Systems is developing a family of next generation electronic unit injectors that provide the fundamental injection characteristics necessary for emissions and performance improvements for future direct-injection diesel engines. This paper describes the development and design of the mechanically actuated version of Caterpillar's advanced electronic unit injector fuel system to meet the engine customer driven requirements for enhanced injection characteristics with reliability and durability improvements.
Technical Paper

Integrated Diagnostics for the Vehicle System

How will a mechanic troubleshoot the heavy duty vehicle of the future? Will he or she have to be both retriever and integrator of data collected from multiple black boxes on the vehicle? How many tools will it take? Is there a definition of a vehicle system “diagnostic environment” that needs to be developed in order to create a solution to this problem? This paper will attempt to create the system focus for vehicle diagnostics that is required if this industry is to successfully produce the integrated electronic vehicle of the future. Both the on-board and off-board requirements of the diagnostic environment will be examined.