Cummins Power Generation Ip, Inc.

Cummins Power Generation Inc.

Luke R Staples

David T Falkowski

Nick V Halstead

Deborah A Klinkert

Matthew J Ethen

Ryan A Becker

Daniel D Wilhelm

Allen B Carney

Hans L Drabek

Andrew C Walseth

Lowell K Siewert

Joel N Robinson

Samuel J Sjostrom

A genset comprises an engine; an alternator, an exhaust system, a controller, and at least one of an intake system, an EVAP system, a fuel injector, an EGR system, a SAI system and an aftertreatment system. The controller is configured to control at least a portion of the genset. The controller is in electrical communication with one or more of the alternator, the EVAP system, the EGR system, the SAI system and the aftertreatment system via communication circuitry. Furthermore, the controller is configured to: (a) receive an electrical output from the alternator via the communication circuitry, (b) determine a load on the alternator from the electrical output, which corresponds to mechanical load on the engine, and (c) generate an electrical signal configured to at least partially control operation of at least one of the EVAP system, the EGR system, the SAI system and the aftertreatment system via the communication circuitry.

Genset engine using electrical sensing to control components for optimized performance

Throttle body

A genset system that includes a genset assembly, an electronic fuel injection (EFI) system and an alcohol sensor and a method of controlling air-to-fuel ratio using the genset system are described. The genset assembly includes a genset engine that (1) is capable of running on at least one of gasoline and alcohol, (2) is an air-cooled engine, and (3) operates at a rich air-to-fuel ratio (AFR). The EFI system includes an electronic control unit that is configured to determine a requested AFR based on the data from the alcohol sensor and the data from the air flow sensor, and based on the determined requested relative AFR, the electronic control unit is configured to actuate the fuel injector such that the fuel in an amount sufficient for obtaining an air/fuel mixture that is at the determined requested relative AFR is injected into the intake system.

Genset engine using an electronic fuel injection system integrating an alcohol sensor

An open or closed loop EFI system integrating an alcohol sensor is provided on a genset engine. The EFI system provides acceptable engine performance and efficiency when using fuels or fuel blends over a wide band and when starting from a cold state, i.e., starting the engine after the engine has not run for a relatively long period of time. The alcohol sensor enables acceptable operation while the genset engine is cold. The alcohol sensor sends data to the electronic control unit (ECU) and this data, as well as data provided by other sensors that may be available such as an air flow sensor, is used to determine the optimal air-to-fuel ratio (AFR). The ECU actuates the fuel injector which sends the correct amount of atomized fuel to mix with the air flow to be combusted. The fuel mixture, at the requested AFR, enables the engine to start and operate efficiently from a cold state even if the fuel blend has been changed from a previous operation of the engine.

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St. Louis Park, MN, United States of America

Luke R Staples