Method for operating a traction vehicle and a traction vehicle
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B60W-020/00
B60W-010/06
출원번호
US-0100176
(2013-12-09)
등록번호
US-9205829
(2015-12-08)
우선권정보
DE-10 2012 222 514 (2012-12-07)
발명자
/ 주소
Hug, Joachim
출원인 / 주소
MTU FRIEDRICHSHAFEN GMBH
대리인 / 주소
Lucas & Mercanti, LLP
인용정보
피인용 횟수 :
0인용 특허 :
4
초록▼
A method for operating a traction vehicle, especially a locomotive, wherein the power delivered by a drive system is produced by at least two internal combustion engines, each of which is functionally connected to a generator for producing electric power, the engines preferably being gas engines, ev
A method for operating a traction vehicle, especially a locomotive, wherein the power delivered by a drive system is produced by at least two internal combustion engines, each of which is functionally connected to a generator for producing electric power, the engines preferably being gas engines, even more preferably lean gas engines. A previously determined number of separate power stages ranging from a minimum power up to a nominal power of the drive system is provided. The interval between all directly adjacent power stages is selected so that it corresponds to a constant fraction of the nominal power of the drive system.
대표청구항▼
1. A method for operating a traction vehicle, comprising the steps of: producing power delivered by a drive system by at least two internal combustion engines, each of which is functionally connected to a generator for producing electric power; and providing a previously determined number of separat
1. A method for operating a traction vehicle, comprising the steps of: producing power delivered by a drive system by at least two internal combustion engines, each of which is functionally connected to a generator for producing electric power; and providing a previously determined number of separate power stages ranging from a minimum power up to a nominal Dower of the drive system; wherein an interval between all directly adjacent power stages corresponds to a constant fraction of the nominal power of the drive system. 2. The method according to claim 1, wherein eight separate power stages, aside from a no-load stage and a dynamic braking stage, are provided, wherein the interval between all directly adjacent power stages is selected so that it corresponds in each case to 12.5% of the nominal power of the drive system. 3. The method according to claim 1, including using exactly two internal combustion engines for the drive system. 4. The method according to claim 3, wherein the internal combustion engines have an equal nominal power, wherein the nominal power of the drive system is twice as large as the nominal power of each of the two individual internal combustion engines. 5. The method according to claim 4, wherein four base power stages are provided for each internal combustion engine, wherein the interval between all directly adjacent base power stages of an internal combustion engine is selected so that the interval corresponds in each case to 25% of the nominal power of the internal combustion engine. 6. The method according to claim 1, wherein, according to a first operating mode, a first number of internal combustion engines operates up to a previously determined power stage, wherein, starting from a power stage following the previously determined power stage, at least one additional internal combustion engine is switched in, and wherein, starting from the power stage following the previously determined power stage, a power corresponding to the active power stage is delivered in equal parts by all activated internal combustion engines of the drive system; or, according to a second operating mode, the power corresponding to the active power stage is produced in equal parts by all of the internal combustion engines of the drive system beginning from the minimum power stage; or, according to a third operating mode, a first number of internal combustion engines operates up to a previously determined power stage, wherein, starting from a power stage following the previously determined power stage, at least one additional internal combustion engine is switched in, and wherein, starting from the power stage following the previously determined power stage, a power corresponding to the active power stage is divided asymmetrically over the activated internal combustion engines of the power system, wherein the number of internal combustion engines activated up to the previously determined power stage continues to produce a power corresponding to the previously determined power stage, wherein a power difference versus the active power stage is produced by the at least one additional internal combustion engine. 7. The method according to claim 6, including changing the operating mode during operation of the traction vehicle, wherein the first, the second, or the third operating mode is selected as a function of a current requirement and/or as a function of environmental parameters. 8. The method according to claim 7, wherein the current requirement is a requirement on emissions or a rate of power increase. 9. The method according to claim 1, including dividing power produced by the drive system, at least in the minimum power stage between a traction component and a non-traction component, wherein the non-traction component is supplied to at least one electric power consumer. 10. The method according to claim 9, including dividing the power in a continuously variable manner. 11. The method according to claim 9, including using at least one variable power resister to divide the power between the traction component and the non-traction component. 12. The method according to claim 1, including automatically turning off an internal combustion engine which is not needed so that operation of the internal combustion engines under no-load conditions is substantially avoided. 13. The method according to claim 12, including providing on-board power from an auxiliary power unit at times when the on-board power supply cannot be guaranteed by the drive system. 14. A traction vehicle, comprising a drive system having at least two internal combustion engines; at least two generators, each of the internal combustion engines being functionally connected to a respective one of the generators for producing electric power; and at least one electric traction motor, which is designed to convert electric power into drive power, wherein the traction vehicle is set up to operate in accordance with the method according to claim 1. 15. The traction vehicle according to claim 14, wherein the internal combustion engines are gas engines. 16. The traction vehicle according to claim 15, wherein the gas engines are lean gas engines. 17. The traction vehicle according to claim 14, further comprising an electronic control unit that selects intervals between directly adjacent power stages of the drive system so that the interval corresponds to a constant fraction of a nominal power of the drive system. 18. The traction vehicle according to claim 14, further comprising a power dividing device at least in a lowest power stage, power produced by the drive system between a traction component and a non-traction component, wherein the non-traction component is suppliable to at least one electric power consumer. 19. The traction vehicle according to claim 18, wherein the power dividing device comprises at least one variable power resistor. 20. The traction vehicle according to claim 19, wherein the power dividing device includes a continuously variable power resistor or a load bank.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (4)
Donnelly,Frank Wegner; Swartz,Douglas W.; Watson,John David, Emission management for a hybrid locomotive.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.