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Products | Thermodynamics, Heating and Sanitary Systems | Internal Combustion Engines | CT 400

CT 400

Brake Unit, 75kW, for 4-Cylinder Engines

Technical Description

Setting up a power test stand for internal combustion engines with a power output of up to 75kW requires two main components: The CT 400 as the control and load mechanism and a choice of test engine: CT 400.01 petrol engine or CT 400.02 diesel engine. The engine to be investigated is connected to the CT 400 using a coupling with a jointed shaft.

The main function of the CT 400 is to provide the required braking power, which is generated by an air-cooled eddy current brake. The braking torque can be precisely adjusted using the exciting current. It is measured indirectly using a force transducer. For this purpose, the entire brake system is mounted in floating bearings.
On the base frame there is a quietening vessel with an intake air duct for the combustion air. The quantity of air taken in is measured in the duct.
The rotating control cabinet contains digital displays for speed, torque, volumetric flow of the intake air and temperatures (exhaust gas, oil, cooling water - inlet and outlet - fuel, intake air). Data is transmitted between the CT 400 brake unit and the engine via a data cable, which connects the control cabinets for the two units. All measuring signals are present in electrical form and can be stored and processed using the PC data acquisition function supplied. Data is transmitted to the PC using a USB interface.
In addition to the standard safety features (e.g. oil pressure, temperature limiter), the brake unit contains a limit switch to monitor whether the brake and the engine are correctly connected.

Learning Objectives / Experiments

In conjunction with an engine (CT 400.01 / CT 400.02)
- Plotting of torque and power curves
- Determination of specific fuel consumption
- Determination of volumetric efficiency
- Determination of excess air factor
- Creation of energy balances
+ overall engine efficiency

Features

* Load unit for 4-cylinder diesel and petrol engines up

to 75kW₁
* Air-cooled eddy current brake with precise torque

adjustment for use as load mechanism for test

engine₁
* Easy “docking” of test engine₁
* Complete engine test stand setup in conjunction with

test engine

Available accessories

CT 159.02 -- Exhaust Gas Analyzing Unit
CT 400.01 -- 4-Cylinder Petrol Engine
CT 400.02 -- 4-Cylinder Diesel Engine
CT 400.09 -- Electronic Engine Indicating System for CT 400
CT 400.16 -- Pressure Transducer and TDC Sensor for CT 400.01
CT 400.17 -- Pressure Transducer and TDC Sensor for CT 400.02

Alternative products

CT 110 -- Test Stand for Single Cylinder Engines, 7.5kW
CT 159 -- Modular Test Stand for Single Cylinder Engines, 2.2kW
CT 300 -- Engine Test Stand, 11kW

Overview

CT 400 Test Stand for 4-Cylinder Engines

Specification

[1] Load mechanism for prepared 4-cylinder diesel or petrol engines with a maximum power output of 75kW
[2] Eddy current brake for loading the CT 400.01 and CT 400.02 test engines
[3] Power transmission from test engine to brake unit using elastic coupling and a jointed shaft
[4] Intake air quietening vessel capacity approx. 220L
[5] Potentiometer for continuous adjustment of brake
[6] Potentiometer for “accelerating” the test engine
[7] Recording of braking power using speed and braking torque
[8] Measurement and display of engine load, air temperature, air intake quantity, speed
[9] Test engine measured value displays: Temperatures (oil, exhaust gas, cooling water, fuel), oil pressure, fuel consumption (using precision scales)
[10] LabVIEW data acquisition software via USB connection under Windows XP

Technical Data

Eddy current brake
- max. braking torque: 200Nm
- max. speed: 6000rpm

Measuring ranges (sensors on CT 400 and test engine)
- speed: 0...6000rpm
- torque: 0...240Nm
- volumetric flow:
intake air: 0...6m³/min
cooling water: 0...50L/min
- temperatures:
-50...200°C
exhaust gas: 0...1200°C

Dimensions and Weight

l x w x h : 1200 x 950 x 1900 mm
Weight : approx. 250 kg

Connections

230V, 50/60Hz, 1 phase or 230V, 60Hz, 3 phase

Scope of Delivery

1 brake unit
1 LabVIEW software CD
accessories (including tools, battery charger, cables (data, USB), precision scales, exhaust gas hose 2.5m)
1 instruction manual with accompanying instructional

material

Order Details

063.40000 CT 400 Brake Unit, 75kW, for

4-Cylinder Engines