Firing pattern management for improved transient vibration in variable cylinder deactivation mode
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02D-041/00
F02D-017/02
F02D-013/06
출원번호
US-0310063
(2014-06-20)
등록번호
US-9556811
(2017-01-31)
발명자
/ 주소
Wagh, Nitish J.
Beikmann, Randall S.
출원인 / 주소
GM Global Technology Operations LLC
인용정보
피인용 횟수 :
0인용 특허 :
144
초록▼
A system includes a cylinder control module that determines target numbers of cylinders of an engine to be activated during a period, determines, based on the target numbers and an engine speed, N predetermined sequences for controlling the cylinders of the engine during the period, determines wheth
A system includes a cylinder control module that determines target numbers of cylinders of an engine to be activated during a period, determines, based on the target numbers and an engine speed, N predetermined sequences for controlling the cylinders of the engine during the period, determines whether a transition parameter is associated with at least one of the N predetermined subsequences and selectively adjusts at least one of the N predetermined subsequences based on the determination of whether a transition parameter is associated with at least two of the N predetermined sequences. The system further includes a cylinder actuator module that, during the period, controls the cylinders of the engine based on the N predetermined sequence and based on the at least one selectively adjusted predetermined sequences.
대표청구항▼
1. A cylinder control system of a vehicle, comprising: a cylinder control module that: determines target numbers of cylinders of an engine to be activated during a period;determines, based on the target numbers and an engine speed, N predetermined subsequences for controlling the cylinders of the en
1. A cylinder control system of a vehicle, comprising: a cylinder control module that: determines target numbers of cylinders of an engine to be activated during a period;determines, based on the target numbers and an engine speed, N predetermined subsequences for controlling the cylinders of the engine during the period, where N is an integer greater than zero;determines a transition parameter associated with at least one transition between two of the N predetermined subsequences, the two predetermined subsequences each including M indicators for the M cylinder events, each of the M indicators indicating whether to activate or deactivate a corresponding cylinder, where M is an integer greater than one,wherein the transition parameter includes a first number (X) for truncating one of the two predetermined subsequences and a second number (Y) for truncating the other one of the two predetermined subsequences, where X and Y are integers greater than zero and less than M;adjusts the one of the two predetermined subsequences, by removing the last X number of the M indicators of the one of the two predetermined subsequences, to produce a first adjusted predetermined subsequence; andadjusts the other one of the two predetermined subsequences, by removing the first Y number of the M indicators of the other one of the two predetermined subsequences, to produce a second adjusted predetermined subsequence; anda cylinder actuator module that, during the period, controls the cylinders of the engine based on the N predetermined subsequences, the first adjusted predetermined subsequence, and the second adjusted predetermined subsequence. 2. The cylinder control system of claim 1 wherein the cylinder control module determines the target numbers of cylinders to be activated during the period based on an engine torque request. 3. The cylinder control system of claim 1 wherein the cylinder control module generates a target sequence for activating and deactivating cylinders of the engine based on the N predetermined subsequences, the first adjusted predetermined subsequence, and the second adjusted predetermined subsequence. 4. The cylinder control system of claim 3 wherein the cylinder actuator module activates opening of intake and exhaust valves of first ones of the cylinders that are to be activated based on the N predetermined subsequences, the first adjusted predetermined subsequence, and the second adjusted predetermined subsequence and deactivates opening intake and exhaust valves of second ones of the cylinders that are to be deactivated based on the N predetermined subsequences, the first adjusted predetermined subsequence, and the second adjusted predetermined subsequence. 5. The cylinder control system of claim 1 wherein the cylinder control module retrieves the transition parameter associated with the at least one transition between the at least two of the N predetermined subsequences. 6. The cylinder control system of claim 1 wherein the cylinder control module adjusts the one of the two predetermined subsequences based on a determination that the first number X of the transition parameter is greater than 0. 7. The cylinder control system of claim 6 wherein the cylinder control module adjusts the other one of the two predetermined subsequences based on a determination that the second number Y of the transition parameter is greater than 0. 8. A cylinder control method of a vehicle, comprising: determining target numbers of cylinders of an engine to be activated during a period,determining, based on the target numbers and an engine speed, N predetermined subsequences for controlling cylinders of the engine during the period, where N is an integer greater than zero;determining a transition parameter associated with at least one transition between two of the N predetermined subsequences, the two predetermined subsequences each including M indicators for the M cylinder events, each of the M indicators indicating whether to activate or deactivate a corresponding cylinder, where M is an integer greater than one,wherein the transition parameter includes a first number (X) for truncating one of the two predetermined subsequences and a second number (Y) for truncating the other one of the two predetermined subsequences, where X and Y are integers greater than zero and less than M;adjusting the one of the two predetermined subsequences, by removing the last X number of the M indicators of the one of the two predetermined subsequences, to produce a first adjusted predetermined subsequence;adjusting the other one of the two predetermined subsequences, by removing the first Y number of the M indicators of the other one of the two predetermined subsequences, to produce a second adjusted predetermined subsequence; andcontrolling, during the period, the cylinders of the engine based on the N predetermined subsequences, the first adjusted predetermined subsequence, and the second adjusted predetermined subsequence. 9. The cylinder control method of claim 8 further comprising, determining the target numbers of cylinders to be activated during the period based on an engine torque request. 10. The cylinder control method of claim 8 further comprising generating a target sequence for activating and deactivating cylinders of the engine based on the N predetermined subsequences, the first adjusted predetermined subsequence, and the second adjusted predetermined subsequence. 11. The cylinder control method of claim 10 further comprising activating opening of intake and exhaust valves of first ones of the cylinders that are to be activated based on the N predetermined subsequences, the first adjusted predetermined subsequence, and the second adjusted predetermined subsequence and deactivating opening of intake and exhaust valves of second ones of the cylinders that are to be deactivated based on the N predetermined subsequences, the first adjusted predetermined subsequence, and the second adjusted predetermined subsequence. 12. The cylinder control method of claim 8 further comprising retrieving the transition parameter associated with the at least one transition between the at least two of the N predetermined subsequences. 13. The cylinder control method of claim 8 wherein the adjusting the one of the two predetermined subsequences includes adjusting the one of the two predetermined subsequences based on a determination that the first number X of the transition parameter is greater than 0. 14. The cylinder control method of claim 13 wherein the adjusting the other one of the two predetermined subsequences includes adjusting the other one of the two predetermined subsequences based on a determination that the second number Y of the transition parameter is greater than 0.
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