Engine boost pressure control
September 28, 2025. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod and apparatus for closed-loop control of the operating mixture composition in an internal combustion engine Air-cooled internal combustion engine Method and apparatus for regulating a supercharged internal combustion engine Method and device for monitoring the functioning of two exhaust-gas turbochargers Method for operating a supercharged internal combustion engine and device for this purpose Bi-turbocharger internal combustion engine with exhaust gas recycling Control of multiple supercharged compression ignition engines having EGR Method and device for operating an internal combustion engine Supercharge control apparatus and supercharge control method for supercharged internal combustion engine Method and device for operating an internal combustion engine InventorsAssigneeApplicationNo. 11236787 filed on 09/28/2005US Classes:60/612, Plural superchargers60/605.2, With exhaust gas recirculation123/568.2, Plural EGR valves in the recirculation passage123/568.12, Exhaust gas cooled during recirculation123/568.11, Exhaust gas used with the combustible mixture (e.g., emission control Exhaust Gas Recirculation (EGR) valve)123/568.16, With electrical means for fail-safe, backup, or malfunction detecting of EGR system123/562, Multiple superchargers60/286, Condition responsive control of heater, cooler, igniter, or fuel supply of reactor60/285, Engine fuel, air, or ignition controlled by sensor of reactor condition60/299Using a catalystExaminersPrimary: Trieu, Thai-BaAttorney, Agent or FirmForeign Patent References
International ClassesF02B 37/00F02B 37/18 F02B 37/22 F02D 21/08 F02D 23/00 F02D 41/02 F02M 25/07 AbstractA controller (70) controls the boost pressure of an internal combustion engine (60) comprising two intake/exhaust units, each intake/exhaust unit comprising a turbocharger (10) which supercharges intake air in an intake passage (20) using exhaust energy in an exhaust passage (30), and an exhaust gas recirculating device (40, 41) which recirculates a part of the exhaust gas in the exhaust passage to the intake passage. The controller (70) calculates an opening difference between valves in the two units (S121), and controls a regulating device (13) in each of the two units on the basis of this opening difference (S123-S125). As a result, the boost pressures of the turbochargers (10) match, and hence an equal amount of NOx can be discharged from each exhaust passage (30), and the NOx can be purified favorably by a catalyst.Field of SearchPlural superchargersWith exhaust gas recirculation Plural EGR valves in the recirculation passage Exhaust gas cooled during recirculation Exhaust gas used with the combustible mixture (e.g., emission control Exhaust Gas Recirculation (EGR) valve) Multiple superchargers With electrical means for fail-safe, backup, or malfunction detecting of EGR system | |
