Control device and control method for a vehicle compressed air preparation device
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B60T-017/00
B01D-053/26
출원번호
US-0127545
(2009-08-08)
등록번호
US-8529660
(2013-09-10)
우선권정보
DE-10 2008 056 322 (2008-11-07)
국제출원번호
PCT/EP2009/005778
(2009-08-08)
§371/§102 date
20110613
(20110613)
국제공개번호
WO2010/051868
(2010-05-14)
발명자
/ 주소
Diekmeyer, Heinrich
Pendzich, Kevin
Reinhardt, Joachim
Strache, Wolfgang
출원인 / 주소
WABCO GmbH
대리인 / 주소
Kramer Levin Naftalis & Frankel LLP
인용정보
피인용 횟수 :
3인용 특허 :
5
초록▼
A control device for a compressed air preparation device of a vehicle outputs output signals for adjusting feed phases and regeneration phases of the compressed air preparation device. A compressor feeds compressed air via an air dryer having a desiccant into a compressed air reservoir in a feed pha
A control device for a compressed air preparation device of a vehicle outputs output signals for adjusting feed phases and regeneration phases of the compressed air preparation device. A compressor feeds compressed air via an air dryer having a desiccant into a compressed air reservoir in a feed phase, and compressed air is passed out of the compressed air reservoir through the air dryer for drying the desiccant in a regeneration phase. The control device adjusts the regeneration phases depending on a current or future engine load and/or a current or future consumption of compressed air by the vehicle. In overrun phases, the desiccant can be excessively dried to a low moisture level in order to save fuel in later travel segments. Route-optimized regeneration of the desiccant as a function of engine load and/or utilization phases can also be effected.
대표청구항▼
1. A control device for a vehicle compressed air preparation device, the preparation device including an air dryer having a desiccant, the preparation device being connected to a compressor and at least one compressed air reservoir, the control device being configured to: (i) generate output signals
1. A control device for a vehicle compressed air preparation device, the preparation device including an air dryer having a desiccant, the preparation device being connected to a compressor and at least one compressed air reservoir, the control device being configured to: (i) generate output signals for adjusting feed phases and regeneration phases of the compressed air preparation device, wherein in a feed phase the compressor feeds compressed air to the at least one compressed air reservoir via the air dryer, and in a regeneration phase compressed air is conducted from the at least one compressed air reservoir through the air dryer to dry the desiccant; and(ii) set the regeneration phases as a function of at least one of a future engine load and a future compressed air consumption value of the vehicle. 2. The control device as claimed in claim 1, wherein the control device is configured to determine a current degree of moisture of the desiccant of the air dryer and to set the degree of moisture by outputting control signals for adjusting the feed phases and regeneration phases to a setpoint degree of moisture. 3. The control device as claimed in claim 2, wherein the control device is configured to determine the current degree of moisture from at least one of (i) a moisture measuring signal of a moisture sensor one of in the air dryer or outside the air dryer and (ii) the air flow rates of preceding feed phases and regeneration phases. 4. The control device as claimed in claim 2, wherein the control device is configured to determine the setpoint degree of moisture at least one of (i) according to a predefined value and (ii) based on at least one of the future engine load and the future compressed air consumption value of the vehicle. 5. A control device for a vehicle compressed air preparation device, the preparation device including an air dryer having a desiccant, the preparation device being connected to a compressor and at least one compressed air reservoir, the control device being configured to: (i) generate output signals for adjusting feed phases and regeneration phases of the compressed air preparation device, wherein in a feed phase the compressor feeds compressed air to the at least one compressed air reservoir via the air dryer, and in a regeneration phase compressed air is conducted from the at least one compressed air reservoir through the air dryer to dry the desiccant;(ii) set the regeneration phases as a function of at least one of a current or future engine load and a current or future compressed air consumption value of the vehicle;(iii) determine a current degree of moisture of the desiccant of the air dryer and to set the degree of moisture by outputting control signals for adjusting the feed phases and regeneration phases to a setpoint degree of moisture;(iv) determine the setpoint degree of moisture at least one of according to a predefined value and based on at least one of the current or future engine load and the current compressed air consumption value or a future compressed air consumption value of the vehicle; and(v) set a low setpoint degree of moisture when a low compressed air consumption value is detected and the future compressed air consumption value is determined to be high. 6. The control device as claimed in claim 5, wherein the control device is configured to: (i) determine the future compressed air consumption value in one of subsequent time periods and route sections, and(ii) when a subsequent time period or route section with a high compressed air consumption value is detected, set (a) initially in at least one overrun phase a higher setpoint pressure in the at least one compressed air reservoir than when no subsequent time period or route section with a high compressed air consumption value is determined, and (b) subsequently at least one additional regeneration phase for effecting the low degree of moisture of the desiccant. 7. The control device as claimed in 6, wherein the control device is configured to: (i) set the setpoint degree of moisture as a function of at least one of the current and future engine load; and(ii) when one of a current and future overrun phase in which the movement energy of the vehicle drives the engine and the compressor is determined, set a lower setpoint degree of moisture than in other phases. 8. The control device as claimed in claim 7, wherein the control device is configured to: (i) receive a pressure measurement signal of the current air pressure in one, a plurality of, or all the compressed air reservoirs;(ii) set the air pressure to a setpoint pressure;(iii) in an overrun phase, set a higher setpoint pressure than outside an overrun phase; and(iv) in at least one regeneration phase one of before and after charging with high compressed air, set the air dryer to a lower degree of moisture than in other regeneration phases. 9. The control device as claimed in claim 4, wherein the control device is configured to pick up at least one of a throttle valve position of the engine of the vehicle, an accelerator pedal activation and a vehicle-internal data signal that represents engine torque as an input signal for determining the engine load, an overrun phase or a phase with changed throttling of a fuel supply. 10. A control device for a vehicle compressed air preparation device, the preparation device including an air dryer having a desiccant, the preparation device being connected to a compressor and at least one compressed air reservoir, the control device being configured to: (i) generate output signals for adjusting feed phases and regeneration phases of the compressed air preparation device, wherein in a feed phase the compressor feeds compressed air to the at least one compressed air reservoir via the air dryer, and in a regeneration phase compressed air is conducted from the at least one compressed air reservoir through the air dryer to dry the desiccant, and(ii) set the regeneration phases as a function of at least one of a current or future engine load and a current or future compressed air consumption value of the vehicle; and(iii) set feed phases and regeneration phases at least one of as a function of a determined route-dependent consumption profile of the compressed air and as a function of a determined route-dependent feed profile of the compressed air. 11. The control device as claimed in claim 10, wherein the control device is configured to: (i) determine current position data;(ii) compare the position data with at least one of the route-dependent consumption profile and feed profile; and(iii) set the feed phases and regeneration phases as a function of the comparison. 12. The control device as claimed in claim 11, wherein the control device is configured to determine at least one of the route-dependent consumption profile of the compressed air and the route-dependent feed profile of the compressed air from map data. 13. The control device as claimed in claim 11, wherein the control device is configured to determine the consumption profile of a the compressed air and the feed profile of the compressed air adaptively from measured values of previous journeys. 14. A compressed air preparation device, comprising: a control device as claimed in claim 1;an air dryer connectable to a compressor, the air dryer including a desiccant; andat least one valve device for setting feed phases and regeneration phases, wherein the control device is configured to actuate the at least one valve device and switch a feed state of the compressor. 15. A vehicle system, comprising: a compressed air preparation device as claimed in claim 14;a compressor driven by a vehicle engine; andat least one compressed air reservoir. 16. A vehicle, comprising a vehicle system as claimed in claim 15. 17. A method for controlling a compressed air preparation device of a vehicle, the method comprising the steps of: in a feed phase, feeding compressed air from a compressor via an air dryer into at least one compressed air reservoir to increase the air pressure, and,in a regeneration phase, outputting compressed air from the compressed air reservoir via the air dryer to dry the air dryer, wherein the regeneration phase is set as a function of at least one of (i) a future engine load, and (ii) a future compressed air consumption value of the vehicle. 18. The control device as claimed in claim 11, wherein the position data is determined from at least one of a global position determining system and from determined route data. 19. The control device as claimed in claim 12, wherein the map data is route-dependent data relating to the gradient and traffic density. 20. A control device for a vehicle compressed air preparation device, the preparation device including an air dryer having a desiccant, the preparation device being connected to a compressor and at least one compressed air reservoir, the control device being configured to: (i) generate output signals for adjusting feed phases and regeneration phases of the compressed air preparation device, wherein in a feed phase the compressor feeds compressed air to the at least one compressed air reservoir via the air dryer, and in a regeneration phase compressed air is conducted from the at least one compressed air reservoir through the air dryer to dry the desiccant;(ii) set the regeneration phases as a function of at least one of a current or future engine load and a current or future compressed air consumption value of the vehicle;(iii) set a setpoint degree of moisture for the feed phases and regeneration phases as a function of at least one of the current and the future engine load; and(iv) when one of a current and future overrun phase in which the movement energy of the vehicle drives the engine and the compressor is present, set a lower setpoint degree of moisture than in other phases. 21. The control device as claimed in claim 20, wherein the control device is further configured to: (i) receive a pressure measurement signal of the current air pressure in at least one of the compressed air reservoirs;(ii) set the air pressure to a setpoint pressure;(iii) in an overrun phase, set a higher setpoint pressure than outside an overrun phase; and(iv) in at least one regeneration phase one of before and after charging with high compressed air, set the air dryer to a lower degree of moisture than in other regeneration phases.
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이 특허에 인용된 특허 (5)
Elamin Naman A. (Avon OH), Air dryer purge cycle timing control.
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