Engine speed optimization as a method to reduce APU fuel consumption
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F04D-027/00
F04D-017/10
F02C-009/16
F02C-009/28
출원번호
US-0731047
(2015-06-04)
등록번호
US-9845806
(2017-12-19)
발명자
/ 주소
Pascu, Victor
Jones, Anthony C.
출원인 / 주소
United Technologies Corporation
대리인 / 주소
Snell & Wilmer L.L.P.
인용정보
피인용 횟수 :
0인용 특허 :
7
초록▼
Systems and methods for controlling an auxiliary power unit (APU) are provided. The systems and methods may comprise detecting an operating condition of the APU, determining an optimal APU frequency in response to the operating condition, and setting an angular velocity of the APU to the optimal APU
Systems and methods for controlling an auxiliary power unit (APU) are provided. The systems and methods may comprise detecting an operating condition of the APU, determining an optimal APU frequency in response to the operating condition, and setting an angular velocity of the APU to the optimal APU frequency.
대표청구항▼
1. A method for controlling an auxiliary power unit (APU), comprising: determining a load on the APU, wherein the load comprises at least one of an electrical load or a pneumatic load;detecting an operating condition of the APU;determining an optimal APU frequency in response to the operating condit
1. A method for controlling an auxiliary power unit (APU), comprising: determining a load on the APU, wherein the load comprises at least one of an electrical load or a pneumatic load;detecting an operating condition of the APU;determining an optimal APU frequency in response to the operating condition and the load; andsetting an angular velocity of the APU to the optimal APU frequency. 2. The method of claim 1, wherein the operating condition comprises an exhaust gas temperature (EGT). 3. The method of claim 2, wherein the setting the angular velocity of the APU occurs in response to an EGT crossing a threshold value. 4. The method of claim 1, wherein the operating condition comprises at least one of an ambient temperature, an altitude, or an air speed. 5. The method of claim 1, wherein the determining the optimal APU frequency further comprises retrieving the optimal APU frequency from a lookup table. 6. The method of claim 1, further comprising determining an electric demand on the APU. 7. An auxiliary power unit (APU) control system, comprising: a non-transitory memory communicating with a controller, the non-transitory memory having instructions stored thereon that, in response to execution by the controller, cause the controller to perform operations comprising:determining a load on the APU, wherein the load comprises at least one of an electrical load or a pneumatic load;detecting an operating condition of the APU;determining an optimal APU frequency in response to the operating condition and the load; andsetting an angular velocity of the APU to the optimal APU frequency. 8. The method of claim 7, wherein the operating condition comprises an exhaust gas temperature (EGT). 9. The method of claim 8, wherein the setting the angular velocity of the APU occurs in response to an EGT crossing a threshold value. 10. The method of claim 7, wherein the operating condition comprises at least one of an ambient temperature, an altitude, or an air speed. 11. The method of claim 10, wherein the determining the optimal APU frequency further comprises retrieving the optimal APU frequency from a lookup table. 12. The method of claim 7, further comprising determining an electric demand on the APU. 13. An article of manufacture including a non-transitory, tangible computer readable storage medium having instructions stored thereon that, in response to execution by a controller configured for controlling an auxiliary power unit (APU), cause the controller to perform operations comprising: determining a load on the APU, wherein the load comprises at least one of an electrical load or a pneumatic load;detecting an operating condition of the APU;determining an optimal APU frequency in response to the operating condition and the load; andsetting an angular velocity of the APU to the optimal APU frequency. 14. The method of claim 13, wherein the operating condition comprises an exhaust gas temperature (EGT). 15. The method of claim 14, wherein the setting the angular velocity of the APU occurs in response to an EGT crossing a threshold value. 16. The method of claim 13, wherein the operating condition comprises at least one of an ambient temperature, an altitude, or an air speed. 17. The method of claim 13, wherein the determining the optimal APU frequency further comprises retrieving the optimal APU frequency from a lookup table.
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이 특허에 인용된 특허 (7)
Thompson,Robert G., Auxiliary power unit control method and system.
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