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D:62.5mm, driving section length:3000mm, driven section length:5900mm, optically accessible. It is possible to high-temperature high-pressure state instantly at tube ends with shock waves by the high-pressure gas ejected from the drive unit by breaking the membrane. Driving section can be heated up to 473K by electric heaters with temperature controllers to avoid condensation of sample gases with a low vapor pressure. Now, we have experiments by the direct sampling and the two-color method by introducing the actual exhaust gas of an engine to clarify the mechanism of PM oxidation.
Rapid Compression and Expansion Machine (RCEM)
Hydraulically actuated Rapid Compression and Expansion Machine which has max stroke 150mm. RCEM can simulate 1 cycle of the actual engine . Different from actual one RCEM has simple cooling system and has some advantage in optical measurement. Now we do research of mechanism of heat loss in gasoline and diesel engine and research of mixing mechanism of diesel spray.
Common-Rail Single-Cylinder DI Diesel Engine
Bore 89mm, stroke 100mm. Supercharger, external EGR system and variable valve train is equipped. Optical access window in going to be installed.
Exhaust after-treatment simulation device
The synthetic gas is provided by multiple mass flow controller and flow rate of each mass flow controller is accurately controlled as well as gas composition is able to be rapidly altered. And the parallel configuration of heaters(high and low temperature heater) is able to provide the temperature transient profile at catalyst inlet.
Nozzle seat deformation test machine
It has six common-rail fuel injection system with an electric heater thatcan heat the nozzle seat to 300℃ or more. It is allowed to circulate the fuel without burning. Currently, we investigate the effect of the injection conditions on the deformation and deposit of the nozzle seat portion of diesel fuel injection system.