MMET 401 Lab 7 report.docx - Memorandum To Ritwik Kulkarni...

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Memorandum To: Ritwik Kulkarni From: Collin Joyce (UIN: 725009681) Date: October 18 th , 2020 Subject: Report for Lab 7 This lab is about the basics of three new types of hydraulic circuits. The idea of this lab is to get the student familiar with the design, function, and operating characteristics of pressure reducing circuits, counterbalancing a hydraulic motor, and sequencing a motor and a cylinder. The main objective is to be able to observe and determine changes and reactions within the systems when you adjust things RPM and the pressure in the system. The student will then use this information to answer the questions in the lab manual. The exercise of this lab is to observe the systems in action and observe the characteristics of each new system and determine the relationships between the three and any other circuit we have discussed in class thus far. Overall, this is a very good lab to introduce these three new hydraulic circuits and helps the student understand the difference in relationships between the new systems and how they incorporate the concepts that we have been learning since the first lab.
Purpose: The purpose of this week’s lab was to use the Bosch trainers to create and observe three new and different types of systems. The three systems include a pressure reducing circuit, counterbalancing a hydraulic trainer, and sequencing a motor and a cylinder. The goal was to be able to observe these systems at work and learn how things like the motor shaft speed is affected by changing other aspects of the system like the amount of pressure within the system. These are crucial learning points that will come into play further into the semester so it is very important to get a grasp of them early. Procedure: 1. Pressure Reducing Circuit: - a. follow safety checklist b. connect a hose from one of the pressure ports on the connection header to port “p” of the directional control valve. From the “T” port of the directional valve connect a hose to one of the return ports on the connection header c. from port “A” of the directional control valve connect a hose. Place a tee at the open end of this hose d.