公开(公告)号：US10113476B1

公开(公告)日：2018-10-30

申请号：US15498323

申请日：2017-04-26

Applicant: Ford Global Technologies, LLC

Inventor： Brien Lloyd Fulton ,  Dave R. Hanna

IPC: F02B37/10 ,  B60T17/02 ,  B60W30/18 ,  F02B37/18 ,  F02D23/00

CPC classification number: F02B37/10 ,  B60T17/02 ,  B60T2270/88 ,  B60W30/18018 ,  B60W30/18109 ,  B60W2510/0633 ,  F02B37/18 ,  F02D23/00

Abstract: Methods and systems are provided for a vehicle engine including a turbocharger coupled to a hydraulic pump and hydraulic accumulator. In one example, a method may include, in response to the vehicle coming to a stop, supplying pressure to a hydraulic braking system of the vehicle from the accumulator coupled to a hydraulic pump coupled to a shaft of a turbocharger of an engine installed in the vehicle, and automatically shutting down the engine while the vehicle is stopped.

公开(公告)号：US20180252314A1

公开(公告)日：2018-09-06

申请号：US15756072

申请日：2016-12-14

Applicant: KCM CORPORATION

Inventor： Koji HYODO ,  Masashi YAMASHITA ,  Tetsuji TANAKA ,  Katsutaka HARA ,  Masaki NUKII ,  Isamu AOKI

IPC: F16H61/18 ,  F02B39/16 ,  F01P5/04 ,  F02D29/02 ,  F16H59/78 ,  F16H63/50

CPC classification number: F16H61/18 ,  B60K11/085 ,  B60W30/1843 ,  B60W50/12 ,  B60W2510/0633 ,  B60W2510/0676 ,  B60W2520/10 ,  B60W2710/0644 ,  B60W2720/10 ,  B60Y2200/41 ,  B60Y2400/435 ,  F01P5/04 ,  F01P7/044 ,  F01P7/16 ,  F01P11/10 ,  F01P2060/02 ,  F01P2060/14 ,  F01P2060/16 ,  F02B37/24 ,  F02B39/16 ,  F02B2039/164 ,  F02D29/02 ,  F02D29/04 ,  F02D31/006 ,  F02D41/0007 ,  F02D45/00 ,  F02D2200/021 ,  F16H59/78 ,  F16H63/50 ,  F16H2061/166 ,  F16H2061/185 ,  Y02T10/144

Abstract: To curb temperature rises in a control device for a supercharger and extend the life of the control device for the supercharger, a work vehicle includes a variable geometry supercharger with variable boost pressure, and a working device driven by pressure oil discharged from a working hydraulic pump, the work vehicle further including: a supercharger control device adapted to control the supercharger; a temperature detection device adapted to detect temperature of the supercharger control device; and a main control device adapted to limit at least one of maximum rotational speed of an engine and maximum vehicle speed of the work vehicle in case the temperature of the supercharger control device is above a predetermined temperature as compared to case the temperature of the supercharger control device is below the predetermined temperature.

公开(公告)号：US09796372B2

公开(公告)日：2017-10-24

申请号：US14925492

申请日：2015-10-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Tayoung Choi ,  Krunal P Patel ,  Anthony H. Heap

IPC: G06F19/00 ,  B60W20/10 ,  B60L11/18 ,  B60L15/20 ,  B60W30/188 ,  F02B37/12 ,  F02D17/02 ,  B60W10/06 ,  B60W10/08 ,  B60W10/26 ,  F02D41/00 ,  F02D11/10 ,  B60W50/00

CPC classification number: B60W20/10 ,  B60L11/1851 ,  B60L11/1861 ,  B60L15/2045 ,  B60L2240/423 ,  B60L2240/44 ,  B60W10/06 ,  B60W10/08 ,  B60W10/26 ,  B60W30/188 ,  B60W2050/0024 ,  B60W2510/0633 ,  B60Y2300/435 ,  B60Y2400/435 ,  F02B37/12 ,  F02D11/105 ,  F02D17/02 ,  F02D41/0007 ,  F02D41/0087 ,  F02D2250/21 ,  Y02T10/56 ,  Y02T10/6286 ,  Y02T10/7258 ,  Y02T10/84

Abstract: A method for controlling a powertrain of a vehicle includes calculating, via a controller, an optimal torque target for the powertrain as a function of system limits of the vehicle. The method includes commanding, via transmission of an output torque signal, an actual output torque of the powertrain to pursue or follow the calculated optimal torque target during a steady-state torque request condition. Additionally, the method includes detecting a predetermined vehicle event during the steady-state torque request condition, and shaping the output torque signal via the controller. A variable gain factor may be used in response to detection of the predetermined vehicle event to allow the output torque signal to temporarily deviate from the calculated optimal torque target during the steady-state torque request condition. A powertrain has an engine, an electric machine, and a controller programmed to execute the method.

公开(公告)号：US09518507B2

公开(公告)日：2016-12-13

申请号：US14951373

申请日：2015-11-24

Applicant: Alexander Wong

Inventor： Alexander Wong

IPC: F02B63/04 ,  F02C7/36 ,  H02K7/18 ,  F02B37/00 ,  F01N5/04 ,  F02B39/10 ,  B60K6/26 ,  F02B33/40 ,  F02B37/18

CPC classification number: F02B37/005 ,  B60K6/26 ,  B60W20/13 ,  B60W20/19 ,  B60W2510/0633 ,  B60W2510/244 ,  B60W2710/0638 ,  B60Y2200/92 ,  F01N5/04 ,  F02B33/40 ,  F02B37/18 ,  F02B37/186 ,  F02B39/10 ,  F02B41/10 ,  F02B63/04 ,  F02D41/0007 ,  F02D41/10 ,  Y02T10/144 ,  Y02T10/16 ,  Y02T10/163 ,  Y10S903/906

Abstract: Embodiments as described herein provide a simplified turbo recharger for an efficient, reliable, low-cost system that delivers good performance for improving efficiency of a vehicle using electric power. Embodiments as described herein may be used with electric motor, combustion engine hybrid vehicles to improve the fuel efficiencies of such vehicles. A turbine may be positioned in an exhaust stream of a vehicle that is coupled to a generator to recharge the battery of a vehicle. The turbine may include a wastegate to permit the exhaust stream to enter or bypass the turbine depending on the charge of the battery, the rate of rotation of the turbine, pressure within the turbine, the speed of the engine, or a combination of the above.

公开(公告)号：US08852052B2

公开(公告)日：2014-10-07

申请号：US13627588

申请日：2012-09-26

Applicant: Cummins Inc.

Inventor： Vivek Anand Sujan ,  Martin T. Books ,  Patrick O. Djan-Sampson ,  Praveen Muralidhar

IPC: B60K6/20

CPC classification number: B60W20/20 ,  B60K6/387 ,  B60K6/442 ,  B60W10/02 ,  B60W10/06 ,  B60W10/08 ,  B60W10/26 ,  B60W20/00 ,  B60W20/10 ,  B60W20/14 ,  B60W20/40 ,  B60W30/18127 ,  B60W30/18136 ,  B60W30/188 ,  B60W30/1882 ,  B60W30/192 ,  B60W2050/0008 ,  B60W2050/001 ,  B60W2050/0056 ,  B60W2510/0633 ,  B60W2510/0638 ,  B60W2510/0657 ,  B60W2510/068 ,  B60W2510/081 ,  B60W2510/083 ,  B60W2510/1005 ,  B60W2510/244 ,  B60W2510/246 ,  B60W2510/248 ,  B60W2510/305 ,  B60W2520/10 ,  B60W2530/10 ,  B60W2540/12 ,  B60W2560/00 ,  B60W2710/021 ,  B60W2710/0677 ,  B60W2710/086 ,  B60W2710/244 ,  B60W2710/248 ,  Y02T10/48 ,  Y02T10/6234 ,  Y02T10/6286 ,  Y02T10/84 ,  Y10S903/93 ,  Y10T477/23 ,  Y10T477/26

Abstract: A method includes operating a hybrid power train having an internal combustion engine and an electrical torque provider. The method further includes determining a machine power demand and an audible noise limit value for the internal combustion engine. The method includes determining a power division description in response to the machine power demand and the audible noise limit value, and operating the internal combustion engine and the electrical torque provider in response to the power division description.

Abstract translation: 一种方法包括操作具有内燃机和电力转矩提​​供器的混合动力传动系。 该方法还包括确定内燃机的机器功率需求和可听噪声极限值。 该方法包括响应于机器功率需求和可听噪声极限值来确定功率分布描述，以及响应于功率分配描述来操作内燃机和电力转矩提​​供器。

公开(公告)号：US08852051B2

公开(公告)日：2014-10-07

申请号：US13627469

申请日：2012-09-26

Applicant: Cummins Inc.

Inventor： Vivek Anand Sujan ,  Martin T. Books ,  Patrick O. Djan-Sampson ,  Praveen Muralidhar

IPC: B60W10/08

CPC classification number: B60W20/20 ,  B60K6/387 ,  B60K6/442 ,  B60W10/02 ,  B60W10/06 ,  B60W10/08 ,  B60W10/26 ,  B60W20/00 ,  B60W20/10 ,  B60W20/14 ,  B60W20/40 ,  B60W30/18127 ,  B60W30/18136 ,  B60W30/188 ,  B60W30/1882 ,  B60W30/192 ,  B60W2050/0008 ,  B60W2050/001 ,  B60W2050/0056 ,  B60W2510/0633 ,  B60W2510/0638 ,  B60W2510/0657 ,  B60W2510/068 ,  B60W2510/081 ,  B60W2510/083 ,  B60W2510/1005 ,  B60W2510/244 ,  B60W2510/246 ,  B60W2510/248 ,  B60W2510/305 ,  B60W2520/10 ,  B60W2530/10 ,  B60W2540/12 ,  B60W2560/00 ,  B60W2710/021 ,  B60W2710/0677 ,  B60W2710/086 ,  B60W2710/244 ,  B60W2710/248 ,  Y02T10/48 ,  Y02T10/6234 ,  Y02T10/6286 ,  Y02T10/84 ,  Y10S903/93 ,  Y10T477/23 ,  Y10T477/26

Abstract: A method includes operating a hybrid power train having an internal combustion engine and an electrical torque provider. The method further includes determining a machine power demand and, in response to the machine power demand, determining a power division description. The method includes operating the internal combustion engine and the electrical torque provider in response to the power division description. The method further includes operating the internal combustion engine by starting the internal combustion engine in response to determining that a battery state-of-charge is below a predetermined threshold value.

Abstract translation: 一种方法包括操作具有内燃机和电力转矩提​​供器的混合动力传动系。 该方法还包括确定机器功率需求，并且响应于机器功率需求，确定功率分配描述。 该方法包括响应于功率分配描述操作内燃机和电力转矩提​​供器。 该方法还包括响应于确定电池充电状态低于预定阈值来启动内燃机来操作内燃机。

公开(公告)号：US08225608B2

公开(公告)日：2012-07-24

申请号：US12264290

申请日：2008-11-04

Applicant: Ko-Jen Wu ,  Jian Jun Zhang ,  James C. Elmslie

Inventor： Ko-Jen Wu ,  Jian Jun Zhang ,  James C. Elmslie

IPC: F02B33/44

CPC classification number: B60W20/15 ,  B60K1/02 ,  B60K6/24 ,  B60K6/48 ,  B60W10/06 ,  B60W10/08 ,  B60W20/00 ,  B60W2510/0633 ,  B60W2510/0685 ,  B60W2520/10 ,  B60W2710/0666 ,  B60Y2400/435 ,  F01N5/04 ,  F02B37/10 ,  F02B39/10 ,  Y02T10/144 ,  Y02T10/16 ,  Y02T10/6221 ,  Y02T10/6286 ,  Y02T10/6295

Abstract: A hybrid powertrain for a vehicle is provided. The powertrain includes an engine boosted by a turbocharger. The turbocharger includes a first motor-generator mounted with respect to the turbocharger, and arranged to selectively assist acceleration of the vehicle by driving the turbocharger, to provide regenerative charging of an energy storage device and to be idle, as its modes of operation. The powertrain additionally includes a second motor-generator mounted with respect to the powertrain, and arranged to selectively assist acceleration of the vehicle, to provide regenerative charging of the energy storage device and to be idle, as its modes of operation. A controller responsive to sensed vehicle operating parameters is arranged on the vehicle for controlling and coordinating the modes of operation of the first motor-generator and of the second motor-generator.

Abstract translation: 提供了一种用于车辆的混合动力系。 动力总成包括由涡轮增压器升压的发动机。 涡轮增压器包括相对于涡轮增压器安装的第一电动发电机，并且被布置成通过驱动涡轮增压器来选择性地辅助车辆的加速，以提供能量存储装置的再生充电并作为其操作模式。 动力传动系统还包括相对于动力系安装的第二电动发电机，并且被布置为选择性地协助车辆的加速，提供能量存储装置的再生充电并作为其操作模式。 在车辆上布置有响应于感测到的车辆操作参数的控制器，用于控制和协调第一电动发电机和第二电动发电机的操作模式。

公开(公告)号：US07520353B2

公开(公告)日：2009-04-21

申请号：US11429458

申请日：2006-05-08

Applicant: Alex J. Severinsky ,  Theodore Louckes

Inventor： Alex J. Severinsky ,  Theodore Louckes

IPC: B60K6/42

CPC classification number: B60W20/14 ,  B60H1/004 ,  B60H1/3222 ,  B60K1/02 ,  B60K6/22 ,  B60K6/365 ,  B60K6/442 ,  B60K6/46 ,  B60K6/48 ,  B60K6/485 ,  B60K6/547 ,  B60L7/18 ,  B60L7/26 ,  B60L11/123 ,  B60L11/14 ,  B60L11/1809 ,  B60L11/1811 ,  B60L11/1851 ,  B60L11/1861 ,  B60L15/2045 ,  B60L2200/26 ,  B60L2210/20 ,  B60L2220/12 ,  B60L2220/14 ,  B60L2220/16 ,  B60L2240/34 ,  B60L2240/36 ,  B60L2240/423 ,  B60L2240/443 ,  B60L2240/445 ,  B60L2260/28 ,  B60L2270/145 ,  B60T7/06 ,  B60T8/17 ,  B60T8/172 ,  B60T11/18 ,  B60T13/586 ,  B60T2270/60 ,  B60T2270/604 ,  B60W10/06 ,  B60W10/08 ,  B60W10/18 ,  B60W10/26 ,  B60W20/00 ,  B60W20/10 ,  B60W20/15 ,  B60W20/30 ,  B60W30/18127 ,  B60W2510/0633 ,  B60W2510/0657 ,  B60W2510/244 ,  B60W2530/16 ,  B60W2540/12 ,  B60W2710/08 ,  B60W2710/18 ,  B60W2710/244 ,  B60Y2200/91 ,  B60Y2200/92 ,  B60Y2300/18125 ,  B60Y2300/91 ,  B60Y2400/112 ,  B60Y2400/435 ,  B60Y2400/81 ,  F01N3/2013 ,  F02B37/00 ,  F02B37/16 ,  F02B37/18 ,  F02D41/0007 ,  F02D2250/18 ,  F02M35/10157 ,  F02M35/10163 ,  F02N11/0818 ,  F02N2200/061 ,  H01M10/4207 ,  H01M2220/20 ,  Y02A50/2322 ,  Y02T10/144 ,  Y02T10/26 ,  Y02T10/6217 ,  Y02T10/6221 ,  Y02T10/6234 ,  Y02T10/6286 ,  Y02T10/642 ,  Y02T10/645 ,  Y02T10/7005 ,  Y02T10/7044 ,  Y02T10/705 ,  Y02T10/7077 ,  Y02T10/725 ,  Y02T10/7283 ,  Y10S903/903 ,  Y10S903/904 ,  Y10S903/907 ,  Y10S903/93 ,  Y10S903/946 ,  Y10S903/947 ,  Y10T477/23 ,  Y10T477/24

Abstract: A hybrid vehicle comprises an internal combustion engine, a traction motor, a starter motor, and a battery bank, all controlled by a microprocessor in accordance with the vehicle's instantaneous torque demands so that the engine is run only under conditions of high efficiency, typically only when the load is at least equal to 30% of the engine's maximum torque output. In some embodiments, a turbocharger may be provided, activated only when the load exceeds the engine's maximum torque output for an extended period; a two-speed transmission may further be provided, to further broaden the vehicle's load range. A hybrid brake system provides regenerative braking, with mechanical braking available in the event the battery bank is fully charged, in emergencies, or at rest; a control mechanism is provided to control the brake system to provide linear brake feel under varying circumstances.

Abstract translation: 混合动力车辆包括内燃机，牵引电动机，起动电动机和电池组，全部由微处理器根据车辆的瞬时转矩要求控制，使得发动机仅在高效率的条件下运行，通常仅在 当负载至少等于发动机最大扭矩输出的30％时。 在一些实施例中，可以提供涡轮增压器，只有当负载超过发动机的最大扭矩输出长时间时激活; 可以进一步提供双速变速器，以进一步扩大车辆的负载范围。 混合制动系统提供再生制动，在电池组完全充电，紧急情况或静止时可用机械制动; 提供控制机构来控制制动系统，以提供不同情况下的线性制动感。

公开(公告)号：US07237634B2

公开(公告)日：2007-07-03

申请号：US11229762

申请日：2006-01-13

Applicant: Alex J. Severinsky ,  Theodore Louckes

Inventor： Alex J. Severinsky ,  Theodore Louckes

IPC: B06K6/02

CPC classification number: B60W20/14 ,  B60H1/004 ,  B60H1/3222 ,  B60K1/02 ,  B60K6/22 ,  B60K6/365 ,  B60K6/442 ,  B60K6/46 ,  B60K6/48 ,  B60K6/485 ,  B60K6/547 ,  B60L7/18 ,  B60L7/26 ,  B60L11/123 ,  B60L11/14 ,  B60L11/1809 ,  B60L11/1811 ,  B60L11/1851 ,  B60L11/1861 ,  B60L15/2045 ,  B60L2200/26 ,  B60L2210/20 ,  B60L2220/12 ,  B60L2220/14 ,  B60L2220/16 ,  B60L2240/34 ,  B60L2240/36 ,  B60L2240/423 ,  B60L2240/443 ,  B60L2240/445 ,  B60L2260/28 ,  B60L2270/145 ,  B60T7/06 ,  B60T8/17 ,  B60T8/172 ,  B60T11/18 ,  B60T13/586 ,  B60T2270/60 ,  B60T2270/604 ,  B60W10/06 ,  B60W10/08 ,  B60W10/18 ,  B60W10/26 ,  B60W20/00 ,  B60W20/10 ,  B60W20/15 ,  B60W20/30 ,  B60W30/18127 ,  B60W2510/0633 ,  B60W2510/0657 ,  B60W2510/244 ,  B60W2530/16 ,  B60W2540/12 ,  B60W2710/08 ,  B60W2710/18 ,  B60W2710/244 ,  B60Y2200/91 ,  B60Y2200/92 ,  B60Y2300/18125 ,  B60Y2300/91 ,  B60Y2400/112 ,  B60Y2400/435 ,  B60Y2400/81 ,  F01N3/2013 ,  F02B37/00 ,  F02B37/16 ,  F02B37/18 ,  F02D41/0007 ,  F02D2250/18 ,  F02M35/10157 ,  F02M35/10163 ,  F02N11/0818 ,  F02N2200/061 ,  H01M10/4207 ,  H01M2220/20 ,  Y02A50/2322 ,  Y02T10/144 ,  Y02T10/26 ,  Y02T10/6217 ,  Y02T10/6221 ,  Y02T10/6234 ,  Y02T10/6286 ,  Y02T10/642 ,  Y02T10/645 ,  Y02T10/7005 ,  Y02T10/7044 ,  Y02T10/705 ,  Y02T10/7077 ,  Y02T10/725 ,  Y02T10/7283 ,  Y10S903/903 ,  Y10S903/904 ,  Y10S903/907 ,  Y10S903/93 ,  Y10S903/946 ,  Y10S903/947 ,  Y10T477/23 ,  Y10T477/24

Abstract: A hybrid vehicle comprises an internal combustion engine, a traction motor, a starter motor, and a battery bank, all controlled by a microprocessor in accordance with the vehicle's instantaneous torque demands so that the engine is run only under conditions of high efficiency, typically only when the load is at least equal to 30% of the engine's maximum torque output. In some embodiments, a turbocharger may be provided, activated only when the load exceeds the engine's maximum torque output for an extended period; a two-speed transmission may further be provided, to further broaden the vehicle's load range. A hybrid brake system provides regenerative braking, with mechanical braking available in the event the battery bank is fully charged, in emergencies, or at rest; a control mechanism is provided to control the brake system to provide linear brake feel under varying circumstances.

Abstract translation: 混合动力车辆包括内燃机，牵引电动机，起动电动机和电池组，全部由微处理器根据车辆的瞬时转矩要求控制，使得发动机仅在高效率的条件下运行，通常仅在 当负载至少等于发动机最大扭矩输出的30％时。 在一些实施例中，可以提供涡轮增压器，只有当负载超过发动机的最大扭矩输出长时间时激活; 可以进一步提供双速变速器，以进一步扩大车辆的负载范围。 混合制动系统提供再生制动，在电池组完全充电，紧急情况或静止时可用机械制动; 提供控制机构来控制制动系统，以提供不同情况下的线性制动感。

公开(公告)号：US07104347B2

公开(公告)日：2006-09-12

申请号：US10382577

申请日：2003-03-07

Applicant: Alex J. Severinsky ,  Theodore Louckes

Inventor： Alex J. Severinsky ,  Theodore Louckes

IPC: B60K6/02

CPC classification number: B60W20/14 ,  B60H1/004 ,  B60H1/3222 ,  B60K1/02 ,  B60K6/22 ,  B60K6/365 ,  B60K6/442 ,  B60K6/46 ,  B60K6/48 ,  B60K6/485 ,  B60K6/547 ,  B60L7/18 ,  B60L7/26 ,  B60L11/123 ,  B60L11/14 ,  B60L11/1809 ,  B60L11/1811 ,  B60L11/1851 ,  B60L11/1861 ,  B60L15/2045 ,  B60L2200/26 ,  B60L2210/20 ,  B60L2220/12 ,  B60L2220/14 ,  B60L2220/16 ,  B60L2240/34 ,  B60L2240/36 ,  B60L2240/423 ,  B60L2240/443 ,  B60L2240/445 ,  B60L2260/28 ,  B60L2270/145 ,  B60T7/06 ,  B60T8/17 ,  B60T8/172 ,  B60T11/18 ,  B60T13/586 ,  B60T2270/60 ,  B60T2270/604 ,  B60W10/06 ,  B60W10/08 ,  B60W10/18 ,  B60W10/26 ,  B60W20/00 ,  B60W20/10 ,  B60W20/15 ,  B60W20/30 ,  B60W30/18127 ,  B60W2510/0633 ,  B60W2510/0657 ,  B60W2510/244 ,  B60W2530/16 ,  B60W2540/12 ,  B60W2710/08 ,  B60W2710/18 ,  B60W2710/244 ,  B60Y2200/91 ,  B60Y2200/92 ,  B60Y2300/18125 ,  B60Y2300/91 ,  B60Y2400/112 ,  B60Y2400/435 ,  B60Y2400/81 ,  F01N3/2013 ,  F02B37/00 ,  F02B37/16 ,  F02B37/18 ,  F02D41/0007 ,  F02D2250/18 ,  F02M35/10157 ,  F02M35/10163 ,  F02N11/0818 ,  F02N2200/061 ,  H01M10/4207 ,  H01M2220/20 ,  Y02A50/2322 ,  Y02T10/144 ,  Y02T10/26 ,  Y02T10/6217 ,  Y02T10/6221 ,  Y02T10/6234 ,  Y02T10/6286 ,  Y02T10/642 ,  Y02T10/645 ,  Y02T10/7005 ,  Y02T10/7044 ,  Y02T10/705 ,  Y02T10/7077 ,  Y02T10/725 ,  Y02T10/7283 ,  Y10S903/903 ,  Y10S903/904 ,  Y10S903/907 ,  Y10S903/93 ,  Y10S903/946 ,  Y10S903/947 ,  Y10T477/23 ,  Y10T477/24

Abstract: A hybrid vehicle comprises an internal combustion engine, a traction motor, a starter motor, and a battery bank, all controlled by a microprocessor in accordance with the vehicle's instantaneous torque demands so that the engine is run only under conditions of high efficiency, typically only when the load is at least equal to 30% of the engine's maximum torque output. In some embodiments, a turbocharger may be provided, activated only when the load exceeds the engine's maximum torque output for an extended period; a two-speed transmission may further be provided, to further broaden the vehicle's load range. A hybrid brake system provides regenerative braking, with mechanical braking available in the event the battery bank is fully charged, in emergencies, or at rest; a control mechanism is provided to control the brake system to provide linear brake feel under varying circumstances.