investigation of free mass forces and moments of a reciprocating engine
Code | TM180 |
Description:
- Every reciprocating engine generates mass forces.
- The mass forces of the oscillating masses cannot be compensated completely, while the mass forces of the rotating masses are fully compensated.
- By using several cylinders, it is possible that the forces compensate each other. However, disturbing moments may still occur.
- The experimental unit TM 180enables investigation of the free masses and moments of a reciprocating engine with a single cylinder, with two cylinders or with four cylinders.
- The engine model comprises pistons with plastic slide bushes.
- The slide bushes do not require lubrication.
- For each cylinder, the angle between cranks can be adjusted continuously.
- As an aid, marks are provided at 0°, 90°, 180° and 270°.
- The oscillating masses can be varied by using additional weights at the pistons.
- The four-throw crankshaft is driven by a DC motor and a synchronous belt.
- The speed is electronically controlled and digitally displayed.
- The free forces and moments are recorded by force sensors placed at the support of the model.
- All electronic functions are integrated in the display and control unit.
- The display and control unit also contains the USBinterface for data acquisition.
- The GUNTsoftware enables the detailed evaluation of the signals of forces and moments.
Technical Details:
Specification:
- experimental unit to investigate oscillating and rotating mass forces and moments of a reciprocating engine with up to 4 cylinders
- simulation of single, 2- or 4-cylinder engines
- electronically commutated and speed-controlled drive motor with digital speed display
- continuous adjustment of the angle between cranks
- force sensors to measure forces and moments
- vibration isolation using rubber elements and suitable tuning
- GUNT software for data acquisition via USB under Windows 8.1, 10
Technical Data:
- Engine:
- number of cylinders: 4
- piston mass: 40g
- additional mass: 41g
- Crank drive:
- mass of connecting rod: 18g
- centre distance of cylinders: 35mm
- crank radius: 15mm
- length of connecting rod: 70mm
- Measuring ranges
- speed: 100…3000min-1
- force: 0…500N
- 230V, 50Hz, 1 phase
- 230V, 60Hz, 1 phase; 120V, 60Hz, 1 phase
- UL/CSA optional
Dimensions & Weight:
- L x W x H: 420x370x350mm
- Weight: approx. 40kg
- L x W x H: 230x230x80mm (display and control unit)
- Weight: approx. 1kg
Required for Operation:
- PC with Windows
Learning Objectives/Experiments:
- effect of mass forces:
- mass forces in dependence on the speed
- mass forces in dependence on the piston mass
- first and second order mass forces
- comparison of different crank drives:
- 4-cylinder, symmetrical, 180° angle between cranks
- 4-cylinder, non-symmetrical, 90° angle between cranks
- 2-cylinder, 180° angle between cranks
- single cylinder
Scope of Delivery:
- 1 engine model
- 1 display and control unit
- 1 set of accessories (tools, additional masses)
- 1 GUNTsoftware + USB cable
- 1 set of instructional material
Features:
- investigation of free mass forces and moments of a reciprocating engine
- continuous adjustment of the angle between cranks
- simulation of single, two- or four-cylinder engines
Accessories:
- Optional:
- WP 300.09 Laboratory trolley
Due to the continuous development of our products, the goods supplied may vary in detail to that illustrated on this Website.