Test Engine. torque [Nm] power [kw] speed [rpm] Liebherr Dieselmotor 934 S A6 4 Cylinders Turbodiesel, intercooler, unit pump, EDC

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1 power [kw] torque [Nm] BFH Bern University of Applied Sciences Test Engine Liebherr Dieselmotor 934 S A6 4 Cylinders Turbodiesel, intercooler, unit pump, EDC Power : 105 kw at 2000 rpm Displacement: 6,36 dm 3 Bore x stroke: 136 x 122 mm Compression ratio: 17 : 1 Emission values according to: 97/68/EG Stage IIIA EPA / CARB Tier 3 88/77/EWG --- speed [rpm] [Liebherr Machines Bulle SA] info.afhb@bfh.ch 1/6

2 Measured values n rpm engine speed M Nm torque G air kg/h air mass flow V fuel l/h fuel flow t SS s time of particulates sampling PM filter mg particle mass on the filter t water C cooling water temperature t oil C oil temperature t room C temperature in the testing room t 1 C temperature on air filter t 2 C temperature before compressor t 3 C temperature after compressor t 4 C temperature after intercooler t 5 C temperature before turbine t 6 C temperature after turbine t 7 C temperature before particle trap t 8 C temperature after particle trap p wv mbar partial pressure of the water vapor p atm mbar atmospheric pressure in the testing room p 2 mbar rel. pressure before compressor p 3 mbar rel. pressure after compressor p 4 mbar rel. pressure after intercooler p 5 mbar rel. pressure before turbine p 6 mbar rel. pressure after turbine p 7 mbar rel. pressure before particle trap p 8 mbar rel. pressure after particle trap CO HC3 FID HC6 IR NO NO 2 volumetric concentration of the emissions NO X CO 2 high % high: exhaust CO 2 low % low: diluted sample (smart sampler) CO 2 room % CO 2 - concentration in the testing room O 2 % BSN - Bosch smoke number R room % rel. humidity in the testing room info.afhb@bfh.ch 2/6

3 Calculated values P e kw power p me bar mean effectiv pressure G fuel kg/h fuel mass flow b e g/kwh specific fuel consumption e - effective efficiency mm 3 /stroke injection quantity - global equivalence ratio G exh kg/h exhaust mass flow PM engine g/h particle mass emission PM g/kwh CO g/kwh specific emissions HC g/kwh NO X g/kwh DF - dilution factor (dilution tunnel) Abbreviations BSN CPC DC DMA DPF EC ECFE INSOF MD19 NanoMet NP OC PAK, PAH PAS PM PMFE PC PCFE SOF SMPS TC Bosch smoke number condensation particle counter diffusion charging sensor differential mobility analyser diesel particle filter elemental carbon elemental carbon filtration efficiency insoluble fraction heated minidiluter nanoparticle summary surface analyser (PAS, DC and MD19) nanoparticulates organic carbon polycyclic aromatic hydrocarbons photoelectrical aerosol sensor particulate matter, particle mass particulate mass filtration efficiency particle count particulate counts filtration efficiency ( nm) soluble organic fraction scanning mobility particles sizer (DMA + CPC) total carbon info.afhb@bfh.ch 3/6

4 Schema of measuring setup fuel tank G fuel fuel cooled EDC mechanical pump t 4, p 4 cooling water from main water supply intercooler t H2O t oil t fuel engine Liebherr D 934 S A6 brake Schenck W450 n, M t 5, p 5 t 3, p 3 t 6, p 6 t 2, p 2 G air air filter t 1 particle trap, catalytic converter or neither minidiluter MD 19 Bosch smoke measurement CO, HC FID, HC IR, NO, NO x, CO 2, O 2 t 7, p 7 silencer ventilation SMART SAMPLER partial dilution tunnel filter element for gravimetric or coulometric analysis t8, p8 heating dilution air TC opacimetry DMA DC CPC PAS SMPS NanoMet info.afhb@bfh.ch 4/6

5 Maximal dimensions for particulate filter 104 ± 4 mm max mm info.afhb@bfh.ch 5/6

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