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VCR Engine Test Rig

VCR Engine Test Rig

VCR Engine Test Rig

The VCR (Variable Compression Ratio) Engine Test Rig, manufactured by Atto Labware, is an advanced training system designed to study the effect of compression ratio on engine performance. It enables students and researchers to vary the compression ratio of a single-cylinder, four-stroke engine and analyze its impact on efficiency, fuel consumption, and power output. The rig is mounted on a mobile workstation with all required instrumentation, making it ideal for engineering colleges, automotive labs, and research centers.

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The VCR (Variable Compression Ratio) Engine Test Rig, manufactured by Atto Labware, is an advanced training system designed to study the effect of compression ratio on engine performance. It enables students and researchers to vary the compression ratio of a single-cylinder, four-stroke engine and analyze its impact on efficiency, fuel consumption, and power output. The rig is mounted on a mobile workstation with all required instrumentation, making it ideal for engineering colleges, automotive labs, and research centers.

Educational Objectives

Students will be able to:

  1. Understand the working principle of variable compression ratio engines.

  2. Measure brake power, indicated power, and thermal efficiency.

  3. Conduct performance tests at different compression ratios.

  4. Study the effects of load, fuel flow, and air-fuel ratio on performance.

  5. Perform heat balance and efficiency calculations.

  6. Analyze specific fuel consumption (SFC) trends under varying CR values.

Performance Measurement

  • Measurement of torque and brake power using a dynamometer.

  • Recording of fuel consumption rate and airflow.

  • Calculation of mechanical efficiency, brake thermal efficiency, and SFC.

  • Measurement of cylinder pressure and exhaust gas temperature.

  • Plotting performance curves (efficiency vs. compression ratio, power vs. load, etc.).

Panel and Instruments / Components

  • Single-cylinder, 4-stroke VCR engine with adjustable compression ratio.

  • Dynamometer (eddy current, hydraulic, or mechanical).

  • Fuel measurement system (burette or digital flow meter).

  • Air intake measurement system with orifice and manometer.

  • Temperature sensors at exhaust, cooling water, and engine head.

  • Pressure sensor and crank angle encoder (for indicator diagram studies).

  • Digital meters for RPM, torque, voltage, and current.

  • Control panel with safety devices and indicators.

  • Mobile workstation with protective enclosures.

Optional Software Package

The system can be supplied with dedicated software for:

  • Real-time monitoring of engine performance parameters.

  • Plotting of P-V and performance curves.

  • Data logging for classroom demonstrations and research projects.

  • Automatic report generation and analysis tools.

⚡ Manufacturer: Atto Labware
Note: Customized specifications and software are available on request.

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