Method for detecting and describing a transient driving situation
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02D-023/00
F02D-021/08
F02D-041/04
F02D-041/00
F02D-041/10
F02D-041/14
F02D-041/24
F02M-026/05
F02B-037/12
출원번호
US-0830384
(2015-08-19)
등록번호
US-9869256
(2018-01-16)
우선권정보
DE-10 2014 218 221 (2014-09-11)
발명자
/ 주소
Lachenmaier, Sebastian
Zeller, Johannes
Bachner, Michael
출원인 / 주소
ROBERT BOSCH GMBH
대리인 / 주소
Norton Rose Fulbright US LLP
인용정보
피인용 횟수 :
0인용 특허 :
6
초록▼
A method for detecting and describing a transient driving situation of a motor vehicle having an internal combustion engine having a boost pressure control system or intake manifold pressure control system, wherein an indicator for identifying the transient driving situation is determined from a rel
A method for detecting and describing a transient driving situation of a motor vehicle having an internal combustion engine having a boost pressure control system or intake manifold pressure control system, wherein an indicator for identifying the transient driving situation is determined from a relative boost pressure/intake manifold pressure control deviation.
대표청구항▼
1. A method for detecting and describing a transient driving situation of a motor vehicle having an internal combustion engine having a boost pressure control system or intake manifold pressure control system, the method comprising: measuring a boost pressure/intake manifold pressure using a sensor;
1. A method for detecting and describing a transient driving situation of a motor vehicle having an internal combustion engine having a boost pressure control system or intake manifold pressure control system, the method comprising: measuring a boost pressure/intake manifold pressure using a sensor;determining a relative boost pressure/intake manifold pressure control deviation using the measured boost pressure/intake manifold pressure;determining a dynamic indicator for identifying the transient driving situation from the relative boost pressure/intake manifold pressure control deviation;checking if the dynamic indicator has a negative gradient;filtering the dynamic indicator if the dynamic indicator has a negative gradient; andcontrolling at least one of an EGR system, a boost pressure/injection system controller, an electrical auxiliary compressor, and an electric motor, using the dynamic indicator. 2. The method of claim 1, wherein a deviation of a target value from an actual value of the boost pressure/intake manifold pressure control system is used as the relative boost pressure/intake manifold pressure control deviation. 3. The method of claim 1, wherein the dynamic indicator is determined from the relative boost pressure/intake manifold pressure control deviation and from a variable characterizing the engine speed. 4. The method of claim 3, wherein the dynamic indicator is a dimensionless variable. 5. The method of claim 3, wherein the filtering includes smoothing off over time a trailing edge in the time course of the dynamic indicator using a low pass filter. 6. The method of claim 5, wherein the low pass filtering is used in a predefinable range of injection volumes. 7. The method of claim 5, wherein the low pass filter is a PT1 filter having a present value of the dynamic indicator as an initial value and a volume-dependent or volume gradient-dependent time constant. 8. A method for detecting and describing a transient driving situation of a vehicle with exclusively pilot-controlled boost pressure, the method comprising: measuring a boost pressure using a sensor;comparing the measured boost pressure and a reference boost pressure to provide a comparison result; anddetermining a dynamic indicator for identifying the transient driving situation from the comparison result between the present boost pressure and the reference boost pressure;checking if the dynamic indicator has a negative gradient;filtering the dynamic indicator if the dynamic indicator has a negative gradient and;controlling a boost pressure controller using the dynamic indicator. 9. The method of claim 8, wherein environmental corrections are taken into account in the reference boost pressure. 10. The method of claim 1, wherein a quantitative identification of a transient driving situation is carried out based on the value of the dynamic indicator and its behavior over time. 11. A non-transitory computer readable medium having a computer program, which is executable by a processor, comprising: a program code arrangement having program code for detecting and describing a transient driving situation of a motor vehicle having an internal combustion engine having a boost pressure control system or intake manifold pressure control system, by performing the following:measuring a boost pressure/intake manifold pressure using a sensor;determining a relative boost pressure/intake manifold pressure control deviation using the measured boost pressure/intake manifold pressure; anddetermining a dynamic indicator for identifying the transient driving situation from the relative boost pressure/intake manifold pressure control deviation;checking if the dynamic indicator has a negative gradient;filtering the dynamic indicator if the dynamic indicator has a negative gradient; andcontrolling at least one of an EGR system, a boost pressure/injection system controller, an electrical auxiliary compressor, and an electric motor, using the dynamic indicator. 12. The non-transitory computer readable medium of claim 11, wherein a deviation of a target value from an actual value of the boost pressure/intake manifold pressure control system is used as a relative boost pressure/intake manifold pressure control deviation. 13. An electronic control unit, comprising: a control arrangement to detect and describe a transient driving situation of a motor vehicle having an internal combustion engine having a boost pressure control system or intake manifold pressure control system, by performing the following: measuring a boost pressure/intake manifold pressure using a sensor;determining a relative boost pressure/intake manifold pressure control deviation using the measured boost pressure/intake manifold pressure;determining an indicator for identifying the transient driving situation from the relative boost pressure/intake manifold pressure control deviation;checking if the dynamic indicator has a negative gradient;filtering the dynamic indicator if the dynamic indicator has a negative gradient; andcontrolling at least one of an EGR system, a boost pressure/injection system controller, an electrical auxiliary compressor, and an electric motor, using the dynamic indicator. 14. The method of claim 1, wherein the dynamic indicator is determined from the relative boost pressure/intake manifold pressure control deviation and from a variable characterizing the engine speed, in particular by a two-dimensional characteristics diagram interpolation from a characteristics diagram encompassing the boost pressure/intake manifold pressure deviation and engine speed. 15. The method of claim 3, wherein the dynamic indicator is a dimensionless variable, in particular in the value range between 0 and 1. 16. The method as recited in claim 1, wherein the controlling includes controlling the electrical auxiliary compressor to build up boost pressure. 17. The method as recited in claim 1, wherein the controlling includes triggering the electric motor to build up torque. 18. The method as recited in claim 1, wherein the filtering is not performed when the dynamic indicator does not have a negative gradient.
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이 특허에 인용된 특허 (6)
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Cunningham, Ralph Wayne; Gerhart, Matthew John; Buckland, Julia Helen; Wait, Suzanne Kay; Shelby, Michael Howard; Doering, Jeffrey Allen; Jankovic, Mrdjan J.; Rollinger, John Eric; Surnilla, Gopichandra; Gogna, Naginder, Methods and systems for providing transient torque response.
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