Function of the high-pressure pump, distribution, injection control and quantity control.
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Refrigeration circuit with compressor, evaporator with fan, thermostatic expansion valve and coaxial coil heat exchanger as condenser
Record of all relevant measured values and display directly at the location of measurement
Hot water circuit with pump, tank and condenser as heater
Additional cooling via pipe coil in the hot water tank and external cooling water
Investigation of a heat pump with a water circuit as load.
The flow rate is measured using a magneto-inductive flow sensor. In this way the system provides a whole host of measured data that permit students to perform experiments on the basic principles of a hydraulic circuit. The Trainer Centrifugal Pump Apparatus is a mobile system with a closed water circuit that is intended both for training in vocational colleges and also for laboratory experiments in higher education. Manometers indicate the pressure on the intake and delivery side of the pump. The system is equipped with a centrifugal pump and various transducers, e.g. the torque on the shaft of the speed-controlled pump motor is measured and indicated on the switch box, as is also the rotational speed, current and voltage.
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The Oil Pump Supply Module is part of an equipment series that facilitates the investigation of a wide range of engines and machines. The flow is adjusted on a pressure valve and recorded using an oval wheel meter. Other sensors measure the temperature, intake and delivery pressure. Different oil pumps can be operated on the supply module and investigated in terms of their characteristic behaviour. The corresponding sensor connections and digital displays are located on the measuring equipment block. The pumps are connected into the experimental set-up using hydraulic hoses with quick action couplings.
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The roller-cell pump has a Plexiglass cover so that all parts are visible.
The pump runs when connected to a 12V-battery.
The pump can be taken apart.
This control concept allows the engine lubricating and cooling points to be supplied independently of engine load and engine speed absolutely and with asignificantly lower drive power particularly in the part-load range than wouldbe possible with a non-controlled pump. A newly developed vane-type oil pump with demand-driven quantity regulation and two map-controlled pressure stages is used in the new 6- and 8-cylinder V engines. The pump is easy to turn.
The followingare easy to recognise:
Cold-start protection valve
Valve formotor oil pump
Control piston
Adjustingring
Rotor withvane.
Cylinder length 200mm, diameter 22.5MM diameter.
The suction nozzle diameter 9mm.
Limit the suction pressure is less than 6.7 * 103Pa (50mmHg).
Working manner of central plunger
Functions of roller ring and cam plate
Function of shutoff device
Functions of pressure valves
Functions of the mechanical governor
Function of injection timing device.
The interior mechanical structure and function of the water pump can be clearly understood through its demonstration and operation. Water pump demonstrator is professional teaching equipment for colleges, secondary vocational and technical schools, car driving training and vehicle repairing field.
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The metering sleeve can be moved at the shaft of this actuator
Th emechanical flyweight governor is replaced by a solenoid
In addition the solenoid actuator can be actuated electrically to demonstrate fuelmetering.
This controlconcept allows the engine lubricating and cooling points to be suppliedindependently of engine load and engine speed absolutely and with asignificantly lower drive power particularly in the part-load range than wouldbe possible with a non. A newly developed vane-type oil pump with demand-driven quantity regulation and two map-controlled pressure stages is used in the new 6- and 8-cylinder V engines. Controlled pump. The pump is easy to turn.
The followingare easy to recognise:
Valve formotor oil pump
Rotor with vane
Control piston
Cold-start protection valve
Toothed wheel for oil pump
Adjusting ring.
Piston pumps are used when high pressures are to be generated. The flow rate of piston pumps is independent of the head and is determined only by speed. Its good suction performance is outstanding. Piston pumps belong to the group of positive displacement pumps. They transport the medium by a reciprocating motion of a piston in the pump working space, called stroke. The stroke creates a suction respectively vacuum effect used to deliver the water. The pulsating pressure curve of the pump can be damped with the aid of the air vessel. Flow rate and head are adjusted via needle valve and overflow valve. The experimental unit is fitted with sensors for pressure and flow rate. The cycle that takes place (intake and discharge of water) can be shown clearly in the p-V diagram. The position of the piston rod is measured by an angle sensor. This allows the determination of the cylinder volume. One pressure sensor measures the pressure at the outlet of the pump, another one measures the pressure in the inside of the cylinder.
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The unit incorporates a pressure sensor to measure the inlet condition of the water. The consists of a return tube incorporating a gate valve, which can be attached to the pump outlet on the service unit.
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The fuel-delivery regulation valve and the fuel channels arealso cutaway
This high-pressure pump is the latest generation
By turning the star grip, one sees the function of the pumpplungers
These pumps are installed in the latest Daimler-Benz-CDI vehicles
Pump cylinder and housing from a block
Injection pressure: 1500 bar
Experiments:
Centrifugal pump performance and characteristics, typically head versus flow and efficiency versus flow
Comprehensive demonstrations and investigations into a centrifugal pump including:
Flow measurement using a Venturi tube
Non-dimensional performance characteristics
Demonstration of cavitation
Operation of centrifugal pumps in parallel
Operation of centrifugal pumps in series.
Operating Conditions:
Operating environment: Laboratory
Operating relative humidity range: 80% at temperatures < 31C decreasing linearly to 50% at 40C
Operating temperature range: +5C to +40C
Storage temperature range: 25C to +55C (when packed for transport).
Function of the gear wheel pump
Function of the throttle shaft
Function of the injector
Function of the AFC plunger
Function of the VS flyweight governor
Function of the PTG flyweight governor
Function of the VS throttle shaft
This pump originates from the diesel engine and is fitted in almostall common models. The pump is easy to turn. The functions of thepumping elements can be demonstrated.
Cutaway are:
Fuel quantity control valve
Pump cylinder
Fuel channel sand valves.
The fuel-delivery regulation valve and the fuel channels are also cutaway.
This high-pressure pump is the latest generation
By turning the star grip, one sees the function of the pump plungers
These pumps are installed in the latest vehicles.
Pump cylinder and housing from a block
The following can easily be seen in the injector: solenoid valve, high and low-pressure channels, injection nozzle, feed and drain bores.
Discharge of thepressurized fuel via a ball valve into the collector line to the rail.
High pressurepump: By turning the eccentric cam the operation of the pump piston can beseen.
Injector: Injectionnozzle, solenoid valve for volume control and for control of start of delivery.
Aspiration ofthe fuel from the interior of the pump via a flat valve.
