Test stand for simulation of the exhaust flow of an internal combustion engine
AssigneeDr. Ing. h.c.F. Porsche Aktiengesellschaft
InventorsErwin Rutschmann, Klaus Fuoss, Marcel Hollmann
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Abstract
This invention relates to a test stand for simulation of the exhaust flow of an internal combustion engine, comprising a cylinder (36) and a base body (39) which is designed as a cylinder head and in which at least one exhaust port (41, 42) which is monitored by a charge cycle valve (43, 44) is provided for simulation, and/or, mapping, of a combustion chamber and a trough and/or cup (40) is also provided, whereby the charge cycle valve (43, 44) can be operated with the help of a valve lift switching [device], a control device for the valve lift shifting and a device for filling the cylinder (36) with compressed air.
Claims14
1-11. (canceled)
Test stand for simulation of an internal combustion engine exhaust flow, comprising
- a cylinder and a base body configured as a cylinder head and in which at least one exhaust port which is operatively associated with a charge cycle valve is provided for at least one of simulation, and mapping of a combustion chamber, and at least one of a trough and cup is also provided, whereby the charge cycle valve is operateable with the aid of a valve lift switching;
- a device for controlling the valve lift switching, and
- a device for filling the cylinder with compressed gas.
Method for simulation of an internal combustion engine exhaust flow comprising:
- using a test stand apparatus to at least one of simulate and map a combustion chamber of varying configurations,
- employing valve lift switching for a change cycle valve arrangement,
- filling the simulated combustion chamber with pressurized gas, and sensing pressure characteristics at preselected locations on the apparatus.
Dependencies are inferred from the claim text.