Power plants – Internal combustion engine with treatment or handling of... – Methods
Patent
1988-08-23
1989-12-19
Hart, Douglas
Power plants
Internal combustion engine with treatment or handling of...
Methods
60286, F01N 302
Patent
active
048874264
ABSTRACT:
A process for operating an exhaust gas burner that can be used particularly in the regeneration of soot filters or the like, in which the exhaust gas burner is turned on to start the regeneration or the like only if the oxygen content in the exhaust gas has a sufficiently high value to readily support ignition. For this determination, recourse is, preferably, had to the instantaneous values of engine performance characteristics reflective of the presence of a high oxygen content in the exhaust gas, e.g., a low engine speed and/or low average pressure valve of the engine. For the determination, the accelerator position and/or the revolutions per minute of the internal combustion engine can be monitored. In the device, a control device is connected, upstream from the turning-on device of the exhaust gas burner, that activates the turning-on device only if the oxygen content in the exhaust gas has a sufficiently high value. For this purpose, the control device can be connected to a detection device that obtains appropriate data from sensors for predetermined engine-operation parameters.
REFERENCES:
patent: 4535588 (1985-08-01), Sato
patent: 4574589 (1986-03-01), Hasegawa
Hart Douglas
Webasto AG Fahrzeugtechnik
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