公开(公告)号：US20230392563A1

公开(公告)日：2023-12-07

申请号：US18295864

申请日：2023-04-05

Applicant: Battelle Memorial Institute

Inventor： Arnez FRANKLIN

IPC: F02D41/08 ,  G07C5/08 ,  F02D41/02

CPC classification number: F02D41/083 ,  G07C5/0825 ,  F02D41/0225 ,  F02D2200/602

Abstract: In an approach to active engine idle control, an apparatus comprises: an accelerator module interface; an engine control module (ECM) interface; a computer readable storage media; and a controller. The controller is configured to: determine an engine speed target for a vehicle engine in revolutions per minute (RPM) based on an electrical load on the vehicle; determine a voltage curve for one or more position sensors of an accelerator module in the vehicle; determine a voltage target for the ECM for each position sensor of the one or more position sensors; and responsive to a first signal that the apparatus is engaged and a second signal that the vehicle is stopped, set an input voltage to the ECM at the voltage target for each of the one or more position sensors.

公开(公告)号：US20230374947A1

公开(公告)日：2023-11-23

申请号：US17749334

申请日：2022-05-20

Applicant: KAWASAKI MOTORS, LTD.

Inventor： Junji CHIBA

IPC: F02D31/00 ,  F02D41/02

CPC classification number: F02D31/002 ,  F02D41/0225 ,  F02D2200/101 ,  F02D2200/50 ,  F02D2200/1002 ,  F16H59/10

Abstract: A utility vehicle includes: an engine; a drive wheel; a power transmission path between the engine and the drive wheel; a clutch that is provided in the power transmission path and configured to disconnect power transmission when an engine rotational speed is lower than an engage rotational speed; an engine rotational speed sensor configured to sense the engine rotational speed; and a controller configured to control an operation of the engine, the controller including an engine brake necessity determination circuitry configured to determine necessity of engine braking, and an engine rotational speed control circuitry configured to control the engine rotational speed, and when the engine brake necessity determination circuitry determines that engine braking is necessary, the engine rotational speed control circuitry is configured to perform automatic engine brake control that increases the engine rotational speed so as to be equal to or higher than the engage rotational speed.

公开(公告)号：US20230227041A1

公开(公告)日：2023-07-20

申请号：US17576160

申请日：2022-01-14

Applicant: Tula Technology, Inc.

Inventor： Louis J. SERRANO ,  Xiaoping CAI ,  Andrew W. PHILLIPS

IPC: B60W30/19 ,  F02D41/02 ,  F02D41/00 ,  B60W10/11 ,  B60W10/06

CPC classification number: B60W30/19 ,  F02D41/0225 ,  F02D41/0087 ,  B60W10/11 ,  B60W10/06 ,  F02D2200/501 ,  F02D2200/101

Abstract: Methods and controllers for controlling engine speed to reduce NVH that occurs in conjunction with transmission shifts are described. In some embodiments, when a transmission shift to a target gear is expected, a target engine speed appropriate for the target gear is first determined. A target rate of change of the engine speed is calculated from the initial engine speed and target engine speed in conjunction with a target transition time. A target torque is then calculated from the target rate of change of engine speed. A target firing fraction or induction ratio are determined that are desired for use with the target engine speed based on the target torque. The transition to the target engine speed and target firing fraction or induction ratio are completed before the gear shift is completed. The described approaches are well suited for use during skip fire or other cylinder output level modulation operation of the engine.

公开(公告)号：US20190186450A1

公开(公告)日：2019-06-20

申请号：US16012075

申请日：2018-06-19

Applicant: HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION

Inventor： Jung Hwan BANG ,  Young Ho JUNG ,  Tae Suk LEE

IPC: F02N11/08 ,  B60W30/18

CPC classification number: F02N11/0818 ,  B60W30/18018 ,  B60W2030/18081 ,  F02D41/0225 ,  F02D41/042 ,  F02D41/123 ,  F02N11/0822 ,  F02N2200/022 ,  F02N2200/024 ,  F02N2200/0801 ,  F02N2200/0802 ,  F02N2200/102

Abstract: A method for controlling a vehicle includes: receiving a detection signal to perform an idle stop and go (ISG) function; and controlling the vehicle to enter into an ISG state where a fuel supply to an engine is cut off and the engine stops when the vehicle decelerates or stops in response to the detection signal. The detection signal includes a fuel cut off signal that is in on state when the vehicle decelerates and in off state at a reference revolution per minute (RPM) of the engine, a gear engagement signal, and a brake pedal signal indicating whether the brake pedal of the vehicle is operated. A controller of the vehicle generates an ISG entry signal based on the fuel cut off signal, the gear engagement signal, and the brake pedal signal to enter the vehicle into the ISG state.

公开(公告)号：US10071629B2

公开(公告)日：2018-09-11

申请号：US15508554

申请日：2015-11-30

Applicant: KCM Corporation

Inventor： Isamu Aoki ,  Koji Hyodo ,  Tetsuji Tanaka ,  Masaki Nukii

IPC: F02D41/02 ,  B60K31/04 ,  B60W10/06 ,  B60W10/10 ,  F02D41/04

CPC classification number: B60K31/045 ,  B60K31/047 ,  B60W10/06 ,  B60W10/10 ,  B60W2510/0638 ,  B60W2710/0666 ,  F01P2023/08 ,  F02D31/009 ,  F02D41/0205 ,  F02D41/0215 ,  F02D41/0225 ,  F02D41/042 ,  F02D2200/1002 ,  F02D2200/101 ,  F02D2200/501 ,  F02D2200/602 ,  F02D2200/604 ,  F02D2250/16 ,  F02D2250/26 ,  F02D2400/12 ,  F16H59/18 ,  F16H59/44 ,  F16H59/46 ,  F16H59/70 ,  F16H59/74 ,  F16H61/00 ,  F16H63/50

Abstract: A prime mover control device of a work vehicle equipped with a torque converter includes: a speed ratio calculation unit that calculates a speed ratio of the torque converter; and a rotational speed limit unit that, when a speed ratio falls within a preset speed ratio range, limits a maximum rotational speed of the prime mover to be lower as compared with a maximum rotational speed set when a speed ratio falls without the preset speed ratio range. When a state in which the speed ratio calculated by the speed ratio calculation unit falls within the preset speed ratio range is maintained for a predetermined time period, the rotational speed limit unit changes a maximum rotational speed of the prime mover to a higher maximum rotational speed than the limited maximum rotational speed limited to be lower by the rotational speed limit unit.

公开(公告)号：US10005463B2

公开(公告)日：2018-06-26

申请号：US14559042

申请日：2014-12-03

Applicant: Ford Global Technologies, LLC

Inventor： Ross Dykstra Pursifull ,  Russ William Ferguson ,  Ralph Wayne Cunningham

IPC: B60W30/18 ,  F02D41/08 ,  F16H61/16 ,  F16H59/54 ,  B60T13/52 ,  F16H61/00 ,  F02M35/10 ,  F02D41/02

CPC classification number: B60W30/18109 ,  B60T13/52 ,  B60Y2200/92 ,  F02D41/0225 ,  F02D41/08 ,  F02D2200/502 ,  F02D2200/602 ,  F02M35/10229 ,  F16H59/54 ,  F16H61/00 ,  F16H61/16 ,  F16H2061/168 ,  F16H2061/207 ,  F16H2300/18

Abstract: Methods and systems for improving vacuum generation for an engine that may be operated at higher altitudes are presented. In one non-limiting example, a transmission that is mechanically coupled to the engine may be shifted from a gear to neutral in response to an actual total number of times a vehicle brake pedal is applied and partially released while the vehicle is stopped and the brake pedal is applied.

公开(公告)号：US20180163615A1

公开(公告)日：2018-06-14

申请号：US15800078

申请日：2017-11-01

Applicant: Honda Motor Co.,Ltd.

Inventor： Atsushi KURAUCHI

IPC: F02B37/18 ,  F02D23/00

CPC classification number: F02B37/183 ,  F02D23/00 ,  F02D41/0007 ,  F02D41/0225 ,  F02D2041/2027 ,  F02D2200/101 ,  Y02T10/144

Abstract: A control device for an internal combustion engine, in which vibration of a waste gate valve in a fully closed state and disadvantages caused due to the vibration thereof while the internal combustion engine is running are prevented, and valve opening responsiveness of the waste gate valve can be improved. In a control device for an internal combustion engine, an opening degree of a waste gate valve 14 is controlled by controlling an electrification duty ratio Iduty of the motor 31. In addition, a fully closed period duty ratio IdFC, which is an electrification duty ratio Iduty when the opening degree of the waste gate valve 14 is controlled to be in a fully closed state, is controlled such that the fully closed period duty ratio IdFC becomes smaller when a detected engine speed NE of an internal combustion engine (1) increases (Step 7 in FIG. 5, FIG. 7).

公开(公告)号：US20180128198A1

公开(公告)日：2018-05-10

申请号：US15343540

申请日：2016-11-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Leon O. Cribbins ,  Nigel K. Hyatt ,  Carl B. Bowman

IPC: F02D41/30 ,  F02D41/10 ,  F02D41/02 ,  F02D41/00

CPC classification number: F02D41/3005 ,  F02D11/105 ,  F02D41/0087 ,  F02D41/0215 ,  F02D41/0225 ,  F02D41/10 ,  F02D2041/1432 ,  F02D2200/0402 ,  F02D2200/101 ,  F02D2200/501 ,  F02D2200/602 ,  F02D2250/21

Abstract: A method of improving active fuel management reactivation torque responsiveness. The method includes detecting a driver torque request signal for increased torque output during active fuel management reactivation, modifying a torque request signal ramp rate based on excess air pressure available within an engine manifold during active fuel management, performing torque shaping on the driver torque request signal using the modified torque request signal ramp rate to obtain a shaped driver torque request signal, modifying manifold model torque estimation based on the excess air pressure available within the engine manifold during active fuel management reactivation, and modifying the smoothed driver torque request signal based on the modified manifold model to increase torque output responsiveness proportional to the driver torque request signal when exiting active fuel management.

公开(公告)号：US20180073454A1

公开(公告)日：2018-03-15

申请号：US15699407

申请日：2017-09-08

Applicant: Mazda Motor Corporation

Inventor： Kanta Kono ,  Atsushi Yamasaki ,  Kyohei Ike

IPC: F02D41/02 ,  F16H63/50 ,  F02D11/10

CPC classification number: F02D41/0225 ,  F02D11/105 ,  F02D11/106 ,  F02D41/0002 ,  F02D41/10 ,  F02D2041/1416 ,  F02D2041/1422 ,  F02D2200/1004 ,  F02D2250/18 ,  F02D2250/28 ,  F16H63/50

Abstract: A control device of a vehicle is provided. The vehicle includes a drive source, wheels, a driving force transmission shaft provided in a driving force transmission path extending from the drive source to the wheels, and an accelerator position sensor for detecting a depression amount of an accelerator pedal. The control device estimates or detects a torsion angle of a drive source side end portion of the shaft with respect to a wheel side end portion, an instruction to the drive source to generate a first torque corresponding to the depression amount of the pedal when the depression is determined to have started, and instructs the drive source to generate a second torque when a change rate of the torsion angle is determined to have inverted from a positive rate to a negative rate for the first time after the depression is determined to have started.

公开(公告)号：US09878720B2

公开(公告)日：2018-01-30

申请号：US14761903

申请日：2014-03-02

Applicant: SCANIA CV AB

Inventor： Johan Tunhag ,  Niclas Lerede ,  Martin Evaldsson

IPC: B60W30/20 ,  B60W10/04 ,  F02D41/02 ,  F02D41/14 ,  F02D11/10 ,  F02D41/10

CPC classification number: B60W30/20 ,  B60W10/04 ,  F02D11/105 ,  F02D41/0225 ,  F02D41/10 ,  F02D41/1497 ,  F02D2200/1002 ,  F02D2200/1004 ,  F02D2200/1012 ,  F02D2200/602 ,  F02D2250/18 ,  F02D2250/26 ,  F02D2250/28

Abstract: Disclosed is a system for regulation of torque demanded from a prime mover of a vehicle, which prime mover responds to the torque demanded by delivering a dynamic torque. This dynamic torque is related by a gear ratio to a dynamic wheel torque which a power train comprising the prime mover imparts to at least one tractive wheel of the vehicle. The system regulates the torque demanded in such a way that a difference between the torque demanded and the dynamic torque is actively limited by employing feedback of the dynamic torque at an earlier time. The torque demanded at a time (t) for the regulation is limited to a maximum value which exceeds the dynamic torque at an earlier time by an offset value. The torque demanded is continuously varied according to the dynamic torque, so that power train oscillations in the vehicle are reduced in number and/or magnitude.