Contributes to cost and time savings for high-altitude testing. Reduces the intake air pressure of the engine to simulate the decrease in engine output at high altitudes.
The compact body equipped with a pressure regulation mechanism that can follow mode driving is easy to move and install. It is currently being introduced in https://youtu.be/orFt8TZGuRU. Features: - Simulates intake pressure up to an altitude of 4500m - Supports mode driving including starting and idling stop - Wide flow range & compact design Applications: - Evaluation of engine startability - Evaluation of drivability - Emission evaluation during mode driving Advantages of this product: This product reduces the intake air pressure of the engine, easily simulating the decrease in engine output at high altitudes with thin air using a chassis dynamometer or engine bench. It minimizes the need for actual vehicle testing at high altitudes, contributing to reduced development costs and time. Altitude 4500m & Maximum flow rate 13500L/min: The intake air pressure of the engine can be reduced to -40kPa (approximately 60kPa atmospheric pressure), equivalent to an altitude of 4500m. The air flow range covers up to 13500L/min (converted to 101.3kPa, 20°C), accommodating a wide variety of vehicle types. Mode driving support, compact design, easy operation, and consideration for safety.
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basic information
>> Performance Specifications << Pressure Adjustment Range -15 to -40 kPa (equivalent to altitudes of 1500 to 4500m) @ 13500L/min -3 to -40 kPa (equivalent to altitudes of 300 to 4500m) @ 6000L/min Pressure Stability (Standard Deviation) Constant Speed Operation: 0.1 kPa WLTC Mode: 0.5 kPa Built-in Pressure Gauge Display Range: 0 to -101.3 kPa, Accuracy: ±1 kPa Flow Rate Range 0 to 13500L/min (converted value at 101.3 kPa, 20℃) Flow pressure outside this range can also be produced. Please consult us. >> Operation Specifications << Display Unit 4-inch LCD Touch Panel Pressure Control Mode Manual (valve angle specification), Automatic (pressure specification) Adjustable Range Pressure: 0 to -99 kPa (in 1 kPa units) Valve Angle: 0.0 to 90.0° (in 0.1° units) Analog Output Chamber Pressure: 0 to -101 kPa/1-5V Analog Input External Pressure: ±10V (scalable) External Control RS-232C, AK Protocol >> Hardware Specifications << Main Unit Dimensions W600×D600×H1063mm (excluding protrusions), approximately 130kg Control Unit Dimensions W148×D89×H85mm (excluding protrusions), approximately 1kg
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Applications/Examples of results
Stability of Pressure (Setting Pressure - 20kPa, Pressure Regulation Simulation Results Based on Measured Engine Intake and Exhaust Flow Rates) WLTC Mode Driving Reproduces a stable depressurization state even during idling stop and acceleration/deceleration. WLTC Driving Racing Can follow rapid flow fluctuations and maintain a depressurization state. Racing
Detailed information
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This product reduces the intake air pressure of the engine, easily simulating the decrease in engine output at high altitudes with low air density using a chassis dynamometer or engine bench. It allows for a significant reduction in the actual vehicle testing conducted at high altitudes, contributing to a reduction in development costs and time.
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Altitude 4500m & Maximum Flow Rate 13500L/min The engine's intake air pressure can be reduced to -40kPa (approximately 60kPa atmospheric pressure) corresponding to an altitude of 4500m. The air flow rate range covers up to 13500L/min (calculated at 101.3kPa and 20°C), accommodating a wide variety of vehicle types. *If the airtightness of the engine intake side is low, it may not be possible to reduce pressure even within the adjustable range. *Please consult us for changes in pressure (altitude) or flow rate range. Mode Driving Support When the engine is off, pressure reduction is achieved by the built-in ejector, and during flow rate changes, a responsive pressure regulating valve and large capacity chamber suppress pressure fluctuations, allowing mode driving while maintaining the target pressure. Compact Design The compact body can be installed not only on a chassis dynamometer but also on an engine bench.
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Simple Operation The control unit that can be installed on the desk is equipped with a touch panel. By simply setting the target pressure and pressing the start button, the intake pressure is automatically controlled. Additionally, a serial communication (RS-232C) function is standard. Automatic operation and data acquisition can be performed through external control from devices such as engine control panels.
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Consideration for Safety As an explosion-proof measure, electrical components such as motors are placed at a height of more than 600mm from the floor. Additionally, during a power outage, the opening of the pressure regulating valve is maintained to prevent engine stalling and sudden increases in output. Appearance of the Main Unit
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Device Configuration and Operation Configuration This product consists of an operation unit, control unit, pressure regulating valve, chamber, pressure gauge, and ejector. (Filter, flow meter, connecting duct, and external pressure gauge are optional.) Operation During engine operation, the angle of the pressure regulating valve is controlled to maintain the target pressure. When the engine is stopped, such as during idling stop, the ejector (vacuum generator) is activated to maintain the target pressure. The chamber functions as a buffer tank to suppress pressure fluctuations. Pressure control using signals from an external pressure gauge is also possible.
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Measurement Example Pressure Stability (Pressure Setting - 20kPa, Pressure Regulation Simulation Results Based on Measured Values of Engine Intake and Exhaust Flow) WLTC Mode Driving Reproduces a stable depressurization state even during idling stop and acceleration/deceleration.
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Measurement Example Pressure Stability (Set Pressure - 20 kPa, Pressure Regulation Simulation Results Based on Measured Values of Engine Intake and Exhaust Flow) Racing Can respond to rapid flow fluctuations and maintain a reduced pressure state.
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Company information
Tsukasa Measurement Research Co., Ltd. specializes in products that measure fundamental physical quantities such as pressure and flow, and has contributed to many research and development projects to date. In particular, in the automotive industry, we have developed and manufactured numerous measuring instruments used for performance testing, such as CVS devices, contributing to the advancement of the industry. Please feel free to consult us if you have any requests.