--- title: Pressure Transducers for Engine Test Stands description: Pressure Transducers for Engine Test Stands image: https://www.setra.com/hs-fs/file-2787897810-jpg/blog-files/test-and-measurement-application.jpg --- ** ** ** - Website Pages - Products [![Setra Systems Logo](https://www.setra.com/hubfs/setra-logo.svg "Setra Systems Logo")](https://www.setra.com/) ![drop-down-pressure](https://www.setra.com/hs-fs/hubfs/angle-arrow-pointing-to-right.png?width=15&name=angle-arrow-pointing-to-right.png) **[Pressure Sensors](https://www.setra.com/product/pressure)** [Differential Pressure Sensors](https://www.setra.com/product/pressure/differential) [Absolute Pressure Sensors](https://www.setra.com/product/pressure/absolute) [Barometric Pressure Sensors](https://www.setra.com/product/pressure/barometric) [Compound Pressure Sensors](https://www.setra.com/product/pressure/compound) [Gauge Pressure Sensors](https://www.setra.com/product/pressure/gauge) [Submersible Pressure 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[Services & Calibration](https://www.setra.com/support/service) [New and Unused for Credit](https://www.setra.com/product-return) [Contact Us](https://www.setra.com/help-center) # Pressure Transducers for Engine Test Stands #### by [Tom Lish](https://www.setra.com/blog/author/tom-lish) - [Tweet](https://twitter.com/share) In the Test and Measurement industry, pressure plays a large part in engine testing and automotive component manufacturing. That’s why wherever you find engines being tested, you’ll likely find transducers measuring everything from air intake pressures to exhaust back-pressures. In the automotive industry, you’ll find transducers measuring everything from tire inflation pressure for [dynamometer testing](https://www.setra.com/blog/test-and-measurement-dynamometer) to controlling tool pressure during crankshaft journal burnishing. See below for the many categories and descriptions of where [Test & Measurement transducers](https://www.setra.com/general-industrial/pressure-test-and-measurement) are used and why: ### Engine and Power Train Testing Applications - [![Setra Test & Measurement Applications, Engine Testing](https://www.setra.com/hs-fs/file-2787897810-jpg/blog-files/test-and-measurement-application.jpg?width=258&name=test-and-measurement-application.jpg)](https://www.setra.com/hs-fs/file-2787897810-jpg/blog-files/test-and-measurement-application.jpg)Verify turbo-jet and turbo-fan aircraft engines meet certification standards - Engine pressure ratio (EPR) measurement - The core engine exhaust pressure compared to the intake pressure to the gas turbine engine. - Engine oil and coolant pressures ( 100 PSI+) - Fuel line pressure (100 PSI+, depending on turbo) - Fuel system pressurization and flow - Inlet and exhaust pressures - Barometric pressure (measured in inches of Mercury) - Intake Manifold - The primary function of the intake manifold is to *evenly* distribute the combustion mixture (or just air in a direct injection engine) to each intake port in the cylinder head(s). Even distribution is important to optimize the efficiency and performance of the engine. It may also serve as a mount for the carburetor, throttle body, fuel injectors and other components of the engine. - Exhaust Manifold - Exhaust manifolds are generally simple cast iron or stainless steel units which collect engine exhaust from multiple cylinders and deliver it to the exhaust pipe. - 1 to 10 PSI - Exhaust GasRecirculation (EGR) - EGR works by recirculating a portion of an engine's exhaust gas back to the engine cylinders. In a gasoline engine, this inert exhaust displaces the amount of combustible matter in the cylinder. This means the heat of combustion is less, and the combustion generates the same pressure against the piston at a lower temperature. In a diesel engine, the exhaust gas replaces some of the excess oxygen in the pre-combustion mixture. - Exhaust Back Pressure - A slight pressure in the exhaust system is normal. However, excessive exhaust back pressure seriously affects engine operation. It may cause an increase in the air box pressure with a resultant loss in the efficiency of the blower. This means less air for scavenging, which results in poor combustion and higher temperatures. - Measured in inches of mercury – can range from 3.8 to 33.5 “ Mercury - Crankcase pressure - The crankcase pressure indicates the amount of air passing between the oil control rings and the cylinder liner into the crankcase, most of which is clean air from the air box. A slight pressure in the crankcase is desirable to prevent the entrance of dust. A loss of engine lubricating oil through the breather tube, crankcase ventilator or dipstick hole in the cylinder block is indicative of excessive crankcase pressure. - Measured in inches of H2O – usually 0.5 to 1”WC - Engine Control - Advanced electric control systems for turbocharged gasoline and diesel truck engines - Measure fuel oil, exhaust and turbo boost pressure - Barometric and differential pressure transducers to determine mass airflow - Gas Turbines - Pressure data for gas turbine engines, aircraft auxiliary power engines, and automotive engines - Diesel Engines - Performance analysis of the various diesel engine parts - Determine horsepower, fuel consumption and turbo efficiency, coolant lubrication, and fuel system operation **[CLICK HERE ](https://www.setra.com/general-industrial/pressure-test-and-measurement)to view Setra's test and measurement page. ** Topics: [General Industrial OEM](https://www.setra.com/blog/topic/general-industrial-oem), [Test and Measurement](https://www.setra.com/blog/topic/test-and-measurement), [General Industrial](https://www.setra.com/blog/topic/general-industrial) ### Recent Posts ### Posts by Topic - 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