FCEP WP1 – All the rest… Teemu Sarjovaara Jingzhou Yu Matteo Imperato Zaira Künsch Antti Elonheimo ÅA 11.12.2012.

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Presentation transcript:

FCEP WP1 – All the rest… Teemu Sarjovaara Jingzhou Yu Matteo Imperato Zaira Künsch Antti Elonheimo ÅA

WP 1.2 Optical Measurements Optical engine measurements by Elonheimo and Hulkkonen Gas jets with single hole nozzle by Jingzhou Yu (Currently at Wärtsilä) Gas jets with pintle nozzle by Zaira Künsch (ETH), on going.

Internal Combustion Engine Research Group The New Optical Engine at Aalto University Based on domestic Agco Sisu Power 84 diesel engine Single cylinder Max speed: 1500 RPM Electro-hydraulic valve actuators Fully adjustable valve timings and lifts External charge air compressor Common rail injection Optical access through piston top and cylinder liner

Internal Combustion Engine Research Group Key components: Piston Piston top (quartz) Original piston Piston extension (titanium)

Internal Combustion Engine Research Group The Optical Access Mirror Piston Piston window Cylinder windows (quartz) Window ring Camera

Internal Combustion Engine Research Group Experimental set-up at Aalto University Liner Piston Extension 45° Mirror Protection Glass Cylinder Head Electro- Hydraulic Valve Actuator CCD Camera Mechanical Shutter Common Rail

Internal Combustion Engine Research Group Miller tests Load: 50% (boundary conditions) Speed: 800 rpm Injection Timing: 1,2 bTDC Injection Duration: 1 ms (~5 CAD) Injection Pressure: 464 bar Fuel: HVO (NExBTL) Three intake valve timings: Normal, Miller 50, and Miller 80 CCD Camera: 1376×1040 Pixels Imaging through glass piston top Lighting with LEDs Measurements: Spray penetration and cone angle, and visible ignition

Internal Combustion Engine Research Group Pictures from the Miller tests (Normal timing)

Measurements by Yu PLIF method Hoerbiger gas injector –Single hole (0,5mm) Nitrogen acetone mixture Result will be presented in SAE WC 2013

Measurements by Künsch PLIF method Pinttle nozzle –Siemens pietzo injector for DI gasoline engines Nitrogen acetone mixture Diploma Thesis Will be finished early 2013

p_inj = 10 bar p_inj = 20 bar p_inj = 30 bar 2.0 ms2.5 ms3.5 ms

WP 1.3 Extreme Value Research Single cylinder turbo charging model development by Jussi Nurmiranta (Currently at Wärtsilä) Seizure with EVE engine in January 2012 (not FCEP tests) suspended the engine running for whole spring 2012 Engine was back in running condition in July 2012 FCEP test runs continued in November –300 bar injection parameter study (finished) –Pilot injection study (on-going)

Figure 6. The correlation between pulse factor (β) and pulse ratio (PR) with valve timing A Figure 7. The correlation between pulse factor (β) and pulse ratio (PR) with valve timing B

Figure 1. Left: Measured exhaust gas pressure pulsation in the exhaust runners of SCE and MCE. Right: Simulated exhaust gas mass flows at the turbine entry position from SCE and MCE.