Archive For 2021-01-16

Transducer and Sensors (Dina Engine Connect)

Dina Engine Connect has been designed and developed in order to send information to the software of the test room, which includes a box for installing temperature and pressure sensors along with the relevant connectors. In this set, modular data cards are installed and the data is sent according to common protocols. This transducer box also has the ability to send data on Wi-Fi network. Depending on the customer’s needs, this system can be designed in portable, static or hanging form, in various dimensions. The sensitivities, circuits and measuring range used in the box are designed exactly according to the customer’s needs.

Dynamometer Controller (Mahar)

Mahar is the state-of-the-art test stand controller for automotive and marine prime mover testing. The latest generation offers you advanced hardware and software for the highest performance, and touch functionality for intuitive operation. It is suitable for test stands with a synchronous machine asynchronous machine, hydraulic dynamometer and eddy current dynamometer  as well as tandem applications.


This controller covers the complete range of automotive testing requirements in control, monitoring and data acquisition. It is optimized for the control of torque, speed, throttle position or a free selectable parameter x.

AC Dynamometer

AC dynamometers (dynos) provide accurate and repeatable dynamometer control under stringent operating conditions for various testing applications. Whether testing small electric tools, large electric motors, off-road diesel engines, marine diesel engines or powertrain components, we offer a dyno and drive that’s right for you.


Advantages include:

  • Regenerative and Non-Regenerative models
  • Low inertia
  • Induction or permanent magnet motor technology
  • Various mounting options
  • Fast response for transient testing
  • Compact design allows us to provide a package using as little of your valuable floor space as possible
  • Custom options available, up to 880 hp (656 kW)

Hydraulic Dynamometers (Water Brake Dynos)

For trucking, off-road, sailing and mining equipment, Dina hydraulic dynamometers (also known as water brake) offer the rugged operation and accuracy you need to ensure success.

Ideal for a wide range of markets, water brake engine dynamometers churn water inside the housing and transfers energy by momentum exchange and water shear. The more water flowing through the dyno, the greater the braking force exerted on the device under test.


Water Brake Dyno Advantages include:

  • High power absorption
  • Low inertia
  • Longevity
  • Unlimited continuous use
  • No electrical requirements

Eddy Current Dynamometer

A precise, low-maintenance, rapid response and repeatable alternative to water brake technology, Dina Eddy Current Engine Dynamometer provide low-inertia, air- or water-cooled operation for testing different kinds of prime movers. This style of dynamometer produces braking torque using the principle of eddy currents induced in a rotating metallic disk, immersed in a magnetic field. A strain gauge load cell on all models provides torque measurement capabilities for precise test and development applications. The rugged design of the power absorbing system – further enhanced by nickel plating of critical components in contact with the cooling water – ensures a long operating life, even in the most demanding applications and environments.


Eddy Current Dyno advantages include

  • Durability
  • Higher speed
  • Tighter control
  • Faster response

Customer Defined Validation

Special tests include non-standard tests performed using specialist test equipment, such as strain gauges to determine material deformation, or tests performed on a specially prepared test stand (TILT), which are designed to determine the specific parameters of the engine and its components.


Sample Tests

  • Crankshaft Stress Measurements
  • Accelerated Crankshaft Test
  • Torsional Vibration Test
  • Start & Stop Test
  • Oil Carry Over Test (Tilting Bench)
  • Generator Test


Strain Gauge Measurements

Direct measurements of deformation using strain gauges at temperatures up to 200°C. Measurements in quarter-bridge, semi-bridge and full-bridge systems, with frequency ranges as high as 40 kHz.

Possibility of recording the signal for later analysis. Static, quasi-static and dynamic measurements.


Aims Of Strain Gauge Measurements 

  • compAims Of Strain Gauge Measurements 
  • arison of real values with computational values,
  • ensuring repeatability fatigue tests (on various rigs),
  • determining the causes of formation of premature cracks,
  • indirect force measurement of the system.

Engine Durability Validation

Validation tests of engines run on the engine dyno aim to determine the durability and reliability of the engine, including its individual components. Such tests, depending on the type of engine (light duty/heavy duty), last from 400 to 3000 hours and simulate accumulated mileages in the range of 150000 to 500000 km in a relatively short time. At the test bench, any test can be mapped and performed under reproducible laboratory conditions, which facilitates the interpretation of the results obtained and also lowers the test costs in relation to the work carried out on the vehicle. The engines are equipped with a series of sensors that measure the current operating parameters (e.g. temperature, pressure, ECU parameters) registered by the automation system, and at the end of the test, depending on the customer’s requirements, a detailed metrological and material analysis is carried out allowing a final assessment of each component and possible qualification for production.


Sample tests

  • Gasoline Engine Life Test
  • Reliability Growth Test
  • Piston Ring Sticking Test
  • Piston Functional Fatigue Test
  • EGR Valve Sticking Test
  • Timing Belt Durability Test
  • Accessory Belt Test
  • Accelerated Bearing Test
  • Valve Seat Pull Out Test
  • EGR Clogging Test
  • Valve Seat Pull Out Test
  • Turbocharger Accelerated Endurance Test
  • Engine Components Vibration Test

Environmental and Chemical

Environmental testing simulates the different climatic conditions and mechanical stress that products are exposed to during their lifetime. In general, environmental tests demonstrate that your products have the build quality to work perfectly, no matter what the conditions. During testing, possible weaknesses can be identified and product improvements can be initiated at an early stage. Environmental testing also helps demonstrate compliance of your products with international regulations, making it easier to access global markets. Environmental testing also boosts trust in your products.


We provide a range of environmental testing services, including:

  • Heat Ageing
  • Thermal Shock
  • Thermal Cycle
  • Pressure Cycle
  • Hot Pressure Cycle
  • Vacuum Pressure
  • Low Temperature
  • Chemical Corrosion

Engine Calibration and Sensors

Development Tests Of Engine

Development tests of engine prototypes conducted on the dyno focus on the selection of individual components and engine systems, their optimization for a given application, verification of technological assumption tests created during the engine design stage on the real object, together with simulation tests. At this stage, engine control unit calibration works are conducted in parallel in order to provide full functionality of engine components.


Individual Engine Component And System Functionality Tests

Functionality tests of engine components and systems are conducted on the dyno in order to verify and assess the operational correctness of individual engine subassemblies. The verification is usually based on the result analysis delivered during durability tests conducted on the testing bench, together with assessments of wear of a given component, subjecting it to meteorological and material tests, as well as via visual inspection.


Sample Calibration Works

  • injector mapping
  • engine friction mapping
  • power curve calibration
  • combustion process stability optimisation
  • fuel consumption and exhaust emissions optimisation
  • calculated rotational torque (torque to quantity)
  • actuator calibration, e.g. of EGR, TVA, VGT, etc.
  • strategies to protect the engine against overloading and overheating
  • air pulsation
  • volumetric engine efficiency
  • fuel injection and air flow strategy calibration

Fuel and Coolant

Tests Of Liquid And Gaseous Fuels And Additives For Those Fuels

Determination of the influence of the fuel in use on engine parameters, efficiency, exhaust emissions, injection system functionality, etc. Tests of injector nozzle clogging, comparisons of fuels and additives (for engine clean-up or higher performance) and durability tests are performed. Depending on the test type, suitable specialist apparatus is used; for example, a fuel consumption meter together with a fuel conditioning system, exhaust analyzers or opacimeters. Engine dynos are equipped with lines supplying the engine with liquid and gaseous fuels. When needed, there is the possibility of combining fuels or additives in order to achieve the desired mixture. Analyses of the chemical composition of fuels, fuel mixtures or sediments formed during the fuel combustion process are performed on site, greatly improve the analysis of results and the testing process.


Fuel Economy Tests

Fuel economy tests are conducted to determine the specific fuel consumption of an engine fuelled with various fuel types, using high precision measuring equipment monitoring fuel consumption which is integrated into the fuel conditioning system (maintaining the fuel temperature and pressure).


Benchmarking Tests

Comparative tests of the “benchmarking” type are conducted on the engine dyno in order to determine the influence fuel and engine oil produced by different manufacturers on engine parameters. During the test, comparative analyses are conducted based on data such as: engine performance, exhaust emissions, fuel consumption, engine subassembly wear and other defined factors. This type of testing allows evaluation of products available on the market and the selection of fuels or engine oils meeting client requirements.


Dirty Fuel And Cleanup Additives’ Influence On Injector Clogging/Coking

Tests aim to determine the influence of using “dirty” fuel on the formation of sediments and injector nozzle clogging/coking, as well as evaluation of the usage of cleanup additives. Modern engines are equipped with injection systems which require fuels of the highest quality. Due to that fact, tests are conducted on the engine dyno with the aim of specifying the influence of elements like sodium and potassium on the propensity for sediment formation in the injectors’ nozzles at high temperatures, which results in a deterioration of spray formation, a decrease in engine performance and an increase in fuel consumption. Simultaneously, tests of cleanup additives – which decrease the formation of sediments and restore the original engine parameters – are conducted.


Exhaust Emission And Fuel Consumption Tests

Catalytic reactor (TWC, DOC, NSC, SCR) and solid particle filter (DPF, GPF) efficiency tests

Efficiency tests of catalytic exhaust gas aftertreatment purifying systems through measurements with 2 emission measurement lines of undiluted exhaust before and after the given exhaust aftertreatment system.

Examples of exhaust sampling points: 

  • Engine OUT – engine exhaust manifold, untreated exhaust
  • PRE cat – catalytic reactor entrance, unpurified exhaust
  • POST cat – catalytic reactor exit, purified exhaust
  • PRE DPF – solid particle filter entrance, unpurified or purified exhaust
  • POST DPF – solid particle filter exit, purified exhaust
  • TAIL PIPE – exhaust system exit, purified exhaust


Diluted or undiluted exhaust concentration measurements: CO, CO2, O2, NO, NOx, NO2, THC, CH4

Diluted or undiluted calculations: CO, CO2, O2, NO, NOx, NO2, THC, CH4

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