UPGRADE OF RUNNING-IN STANDS FOR DIESEL ENGINES

Abstract

He article presents serial stands for running-in and testing of diesels, which have a number of disadvantages characteristic of running-in and testing of high-power diesels. A variant of their upgrade by using automated control systems for running-in with dynamic loading is proposed. (Research purpose) The research purpose is developing the ways to create load-speed modes and technical means for carrying out full-fledged running-in and testing of high-power tractor diesel engines. (Materials and methods) As a result of scientific research, the paper proposes an option for upgrading existing stands by introducing automated dynamic loading control systems into their design, allowing for hot running-in under load and acceptance tests of any types of diesel engines. The complex of successive acceleration and run-out cycles of the inertial system form a cycle of dynamic loading of diesel couplings. The control of the dynamic loading cycle consists in a cyclic effect on the fuel supply and indicator load. (Results and discussion) The description of the developed equipment and its principle of operation was given on the example of an automated control system for running in a diesel engine D-240 with the impact on the lever of the speed controller as part of the KI-5543 brake test bench. (Conclusions) The developed technology of hot running-in with dynamic loading and technical means for its implementation as part of the upgraded serial running-in stands allow for full-fledged technological running-in and testing of diesel engines with a power significantly exceeding the power of the stands, while reducing fuel consumption by up to two times for its implementation.