AVL DITEST DPM 800

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THE CYLINDER PRESSURE EXPERTS – COST-EFFECTIVE AND WITHOUT MECHANICAL INTERVENTION

AVL DITEST DPM 800

The visualization of pressure characteristics in the combustion chamber of an engine is a key process for fine tuning an engine or analyzing engine wear, especially at auto tuning shops, at workshops and in motorsports. By combining the AVL group’s know-how, AVL DITEST and Piezocryst have created an innovative new product. Reliable pressure checks can be performed in the engine’s combustion chamber without cooling, even at the highest engine temperatures such as occur in rallye sports. DPM 800 stands for “Dynamic Pressure Measurement” and allows you to measure the change in internal cylinder pressure over time without any modification to the engine, using a spark plug equipped with a pressure sensor. In diesel vehicles, the glow plug is replaced by a pressure sensor. The full package also includes the pressure spark plug, an amplifier, the AVL DITEST SCOPE and the AVL DSS software. Given its moderate price and ease of use, the measuring system is also used in schools and training centers for demonstrating the combustion processes in gasoline and diesel engines.

FUNCTIONS AT A GLANCE

Efficient work flow – measurement technique with comfort functions

  • Functions for displaying, printing and processing comprehensive measurement logs
  • Functions for displaying reference curves for all measurements
  • Functions for creating and managing your own reference curves, which allow, for example, a comparison of individual cylinders to one another
  • Zoom functions and professional cursor functions
  • Recorder functions for recording and playback of dynamic signal traces with full functionality
  • Functions for displaying the signal history

KEY BENEFITS

Hardware

  • Quick and cost-saving application
  • Comprehensive engine analysis and fault diagnostics
  • Meaningful characteristic values from patented software algorithms
  • Unique measuring system without mechanical intervention 

AVL DiTEST DSS Software

  • Intuitive operation, familiar displays
  • Automatic location of top dead center
  • Measurement technique with comfort functions

TECHNICAL DATA

Signal amplifier
Input range 6000pC
Signal output 1mV / pC
Zero offset 0,5 V
Signal amplitude 0,5V – 4,5V
Temperature range -10°C – 120°C
Power supply 8V – 32V
Dimensions l = 131mm / d=13,8 mm
Pressure transducer
M10, M12, M14
Available in various lengths and models
Custom production
Measuring range 0…200 bar
Temperature range bis zu 400°C
Temperature range -10°C – 120°C
Power supply 8V – 32V
Dimensions l = 131mm / d=13,8 mm

Galvanic isolation between AVL DITEST SCOPE and PC

The galvanic isolation protects the components of the AVL DITEST Scope from shorts caused by electrical breakdowns and ground loops. This prevents ground loops when measuring on grid-connected points (e.g. socket) and on the PC. Defect components in the vehicle or instrument are thereby excluded.

An example

During fault finding a battery charger is connected to the vehicle and the PC is connected to a plug socket. Through the grounded electrical connections of the charger and the PC, with traditional instruments, a ground loop can be established, which can lead to incorrect measurements or may cause damage to components. This is prevented from happening with the galvanic isolation.

Differential measurement channels

The differential measurement channels allow measurement with 40 MS/s and the full bandwidth. Each channel is independently available from the others – so current, resistance and voltage measurements can be carried out in parallel. Short circuits and incorrect readings during the measuring process are thus ruled out.

Tips from the workshop

You can, for example, measure the battery voltage on channel 1 whilst measuring the lambda sensor-heater’s voltage supply on channel 2. The combination of non-differential measurement channels and incorrect polarity would result in short circuit. This is prevented with the AVL DITEST SCOPE SERIES.

INCLUDED IN DELIVERY

AVL DITEST DPM 800

  1. AVL DITEST DPM 800
  2. Pressure spark plug
  3. Amplifier
  4. Cable
dpm 800

SUPPORT & DOWNLOADS

Brochures

 

Technical specifications

AVL DITEST SCOPE SOFTWARE

The proven AVL DITEST SCOPE software user interface can be operated intuitively without any training. All measurements are supported by displaying guided steps as well as explanations for connections and detailed descriptions. Setting and connection errors are not possible thanks to the automatic sensor detection and the colour guide.

teaser scope software