公开(公告)号：US20180017010A1

公开(公告)日：2018-01-18

申请号：US15648069

申请日：2017-07-12

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Stefano NIEDDU ,  Andrea MOLLAR

IPC: F02D41/38 ,  F02M63/02 ,  F02M59/10 ,  F02D41/40 ,  F02D41/14

CPC classification number: F02D41/3872 ,  F02D41/1401 ,  F02D41/3809 ,  F02D41/3818 ,  F02D41/3827 ,  F02D41/3845 ,  F02D41/40 ,  F02D41/401 ,  F02D2041/1433 ,  F02D2200/0602 ,  F02D2200/0616 ,  F02M59/105 ,  F02M63/0245 ,  Y02T10/44

Abstract: A method and apparatus are disclosed for determining the fuel quantity that is actually injected by a fuel injector in an internal combustion engine. A fuel injector is operated to perform a fuel injection. The first discharge stroke of the fuel pump is deactivated following a start of the fuel injection for preventing the discharge stroke from delivering fuel into the fuel rail. A value of a pressure drop caused into the fuel rail by the fuel injection is calculated. A value of a fuel quantity injected by the fuel injection is calculated on the basis of the calculated value of the pressure drop.

公开(公告)号：US20170292461A1

公开(公告)日：2017-10-12

申请号：US15507388

申请日：2015-08-10

Applicant: Continental Automotive GmbH

Inventor： Hong Zhang

IPC: F02D41/00 ,  F02D13/02 ,  F02D41/38

CPC classification number: F02D41/009 ,  F02D13/0234 ,  F02D41/3809 ,  F02D41/3827 ,  F02D41/3845 ,  F02D41/40 ,  F02D2200/04 ,  F02D2200/0402 ,  F02D2200/0406 ,  F02D2200/0602 ,  F02D2200/0614 ,  F02D2200/0616 ,  F02M59/102 ,  Y02T10/44

Abstract: The present disclosure relates to internal combustion engines. The teachings thereof may be embodied in methods and devices for controlling the combustion processes taking place in the cylinders of an internal combustion engine. A method for controlling a combustion process in an internal combustion engine may include: measuring an actual camshaft position; measuring the actual rail pressure; calculating a phase correction value based on the measured actual rail pressure and a mass of fuel to be injected; calculating corrected actual camshaft positions based on the measured actual camshaft position and the respective phase correction value; calculating a mass of air depending on the determined corrected actual camshaft position; and calculating a fuel injection mass based on the mass of air determined for each cylinder.

公开(公告)号：US09719457B2

公开(公告)日：2017-08-01

申请号：US14690648

申请日：2015-04-20

Applicant: Cummins Intellectual Property, Inc.

Inventor： Paul V. Moonjelly ,  Richard A. Booth ,  Lester L. Peters ,  Jeffrey C. Huang ,  Phanindra Garimella

IPC: F02D41/40 ,  F02D41/00 ,  F02D41/22 ,  F02D35/02 ,  F02D41/38 ,  F02D41/14

CPC classification number: F02D41/401 ,  F02D35/023 ,  F02D35/028 ,  F02D41/0085 ,  F02D41/009 ,  F02D41/1439 ,  F02D41/22 ,  F02D41/221 ,  F02D41/3809 ,  F02D2041/1432 ,  F02D2041/224 ,  F02D2041/389 ,  F02D2200/0618 ,  Y02T10/44

Abstract: This disclosure provides system and method that can determine hydraulic start of injection (SOI) in engines using an in-cylinder pressure sensor. The system and method determine apparent heat release rate (AHRR) curve data for the cylinder from the pressure information provided by the in-cylinder pressure sensors, and the hydraulic SOI from the derivative of the AHRR curve data. The system and method provide diagnostic, control and/or compensation opportunities for fuel injector operation in high pressure fuel rail engine systems without use of expensive or complex fuel injector components.

公开(公告)号：US09719450B2

公开(公告)日：2017-08-01

申请号：US14384466

申请日：2013-03-07

Applicant: Takeshi Miyaura ,  Yoshiyasu Ito ,  Nobuyoshi Takigawa

Inventor： Takeshi Miyaura ,  Yoshiyasu Ito ,  Nobuyoshi Takigawa

IPC: F02D41/22 ,  F02D41/14 ,  F02D41/38 ,  F02D41/26

CPC classification number: F02D41/222 ,  F02D41/1443 ,  F02D41/263 ,  F02D41/3809 ,  F02D2041/223

Abstract: A device executes a power limiting process when the number of pressure sensors determined to be normal in a second determination process made by a second processing unit is smaller than or equal to one. When only one pressure sensor is determined to be normal through the second determination process, and when that pressure sensor and a pressure sensor connected to only a first processing unit are determined to be normal in a first determination process made by the first processing unit, a process associated with fuel injection based on a detected value of the pressure sensor determined to be normal in the second determination process is executed, and a degree of limiting engine power through the power limiting process is reduced as compared with when both the pressure sensors are determined to be abnormal in the first determination process.

公开(公告)号：US09670867B2

公开(公告)日：2017-06-06

申请号：US14750332

申请日：2015-06-25

Applicant: Ford Global Technologies, LLC

Inventor： Joseph Norman Ulrey ,  Ross Dykstra Pursifull

IPC: F02D41/38 ,  F02M55/02 ,  F02M59/46 ,  F02D41/30

CPC classification number: F02D41/3845 ,  F02D41/3094 ,  F02D41/3809 ,  F02D2041/3881 ,  F02D2041/389 ,  F02M37/0029 ,  F02M37/0047 ,  F02M55/025 ,  F02M59/464 ,  F02M59/466 ,  F02M63/0285

Abstract: Methods and systems are provided for a direct injection fuel pump. In one example, pressure in a step chamber of the direct injection fuel pump may be regulated to a substantially constant pressure during an entire pump cycle including a compression stroke and a suction stroke.

公开(公告)号：US20170067408A1

公开(公告)日：2017-03-09

申请号：US15120339

申请日：2015-02-19

Applicant: MAN Diesel & Turbo SE

Inventor： Ulrich PROBST

IPC: F02D41/38 ,  F02D41/00

CPC classification number: F02D41/3809 ,  F02D41/0002 ,  F02D41/0027 ,  F02D41/20 ,  F02D2041/001 ,  F02D2041/2003 ,  F02D2200/04

Abstract: Control device of an internal combustion engine, namely, for controlling injectors or gas valves of a fuel supply system of the internal combustion engine, wherein the control device controls each injector for opening the same such that the voltage present at the respective injector changes between different voltage levels in a boost phase of the control as well as in a hold phase of the control, and wherein the control device controls the respective injector in the boost phase such that after reaching a defined boost current level the voltage present at the respective injector changes between a relatively low boost voltage level which is greater than zero volts and a relatively high boost voltage level which is greater than a supply voltage of the control device.

Abstract translation: 内燃机的控制装置，即用于控制内燃机的燃料供给系统的喷射器或气阀，其中控制装置控制每个喷射器打开该喷射器，以使各个喷射器处存在的电压在不同的喷射器之间变化 控制的升压阶段以及控制的保持阶段中的电压电平，并且其中控制装置在升压阶段控制相应的注射器，使得在达到限定的升压电流水平之后，存在于相应喷射器处的电压改变 在大于零伏的相对低的升压电压和大于控制装置的电源电压的相对高的升压电压电平之间。

公开(公告)号：US09574515B2

公开(公告)日：2017-02-21

申请号：US14764058

申请日：2014-01-23

Applicant: MTU Friedrichshafen GmbH

Inventor： Ronald Hegner ,  Michael Willmann ,  Marc Radl

IPC: F02D41/38 ,  F02M63/00 ,  F02D41/30 ,  F02D41/06 ,  F02D41/20 ,  F02M65/00

CPC classification number: F02D41/3809 ,  F02D41/062 ,  F02D41/20 ,  F02D41/3017 ,  F02M63/0015 ,  F02M65/008

Abstract: A method for operating an internal combustion engine having at least one fuel injection valve for introducing fuel into a combustion chamber of the internal combustion engine, the valve being supplied with a specified current intensity in order to adjust a specified flow cross-section of a fuel fluidic connection in the combustion chamber. The maximum specified current intensity during normal operation is equal to a first current intensity and during a release operation is equal to a second, higher current intensity.

Abstract translation: 一种用于操作内燃机的方法，所述内燃机具有至少一个用于将燃料引入内燃机的燃烧室的燃料喷射阀，所述阀被供给特定的电流强度，以便调节燃料的规定的流动横截面 燃烧室内的流体连接。 正常运行期间的最大规定电流强度等于第一电流强度，并且在释放操作期间等于第二较高的电流强度。

公开(公告)号：US09546992B2

公开(公告)日：2017-01-17

申请号：US14723793

申请日：2015-05-28

Applicant: DENSO CORPORATION

Inventor： Naoyuki Yamada ,  Naoki Mikami

IPC: G01N33/00 ,  G01N33/28 ,  F02D41/40 ,  F02D41/14 ,  F02D41/28 ,  F02D41/38

CPC classification number: G01N33/2835 ,  F02D41/1497 ,  F02D41/28 ,  F02D41/3809 ,  F02D41/40 ,  F02D2041/286 ,  F02D2041/288 ,  F02D2200/0602 ,  F02D2200/0612 ,  F02D2200/101

Abstract: A fuel injection system has a common rail storing fuel, a fuel injector injecting the fuel, a fuel-passage supplying the fuel to the fuel injector, and a fuel-pressure sensor detecting a fuel pressure. An ECU acquires a waveform of a fuel pressure representing a change of a fuel pressure based on the detected fuel pressure at the fuel injection. The ECU calculates a speed of a fuel pressure wave forming the waveform of the fuel pressure based on a period of a pulsation of the waveform of the fuel pressure and a fuel passage length, and a fuel density based on the speed of the fuel pressure wave. The ECU further calculates a fuel cetane number, and a kinematic viscosity of the fuel based on the fuel density and the fuel cetane number. The ECU judges fuel properties based on the kinematic viscosity of the fuel.

Abstract translation: 燃料喷射系统具有共轨存储燃料，喷射燃料的燃料喷射器，向燃料喷射器供应燃料的燃料通道以及检测燃料压力的燃料压力传感器。 ECU根据燃料喷射时的检测燃料压力，取得表示燃料压力变化的燃料压力的波形。 ECU根据燃料压力波形和燃料通路长度的脉动的周期，基于燃料压力波的速度，计算形成燃料压力波形的燃料压力波的速度 。 ECU还根据燃料密度和燃料十六烷值计算燃料十六烷值和燃料的运动粘度。 ECU根据燃料的运动粘度来判断燃油特性。

公开(公告)号：US09476377B2

公开(公告)日：2016-10-25

申请号：US14223733

申请日：2014-03-24

Applicant: Cummins Inc.

Inventor： Donald J. Benson

IPC: F02D41/24 ,  F02D41/38 ,  F02D41/20 ,  F02D41/22

CPC classification number: F02D41/2467 ,  F02D41/221 ,  F02D41/3809 ,  F02D2041/2055 ,  F02D2041/224 ,  F02D2200/0602 ,  F02D2200/0606 ,  F02D2200/0616 ,  F02D2200/101

Abstract: A method includes determining a stored injection relationship that includes a number of fuel performance parameters. In one form the fuel performance parameters are related to a particular shape, and may be related to a particular operating condition. The method includes determining a fuel performance outcome during a fuel injection event, and updating the stored injection relationship in response to the fuel performance outcome. The fuel performance outcome can be an injected fuel quantity.

Abstract translation: 一种方法包括确定包括多个燃料性能参数的存储的喷射关系。 在一种形式中，燃料性能参数与特定形状相关，并且可以与特定的操作条件有关。 该方法包括在燃料喷射事件期间确定燃料性能结果，以及响应于燃料性能结果来更新所存储的喷射关系。 燃油性能结果可以是喷油量。

公开(公告)号：US09464590B2

公开(公告)日：2016-10-11

申请号：US14254150

申请日：2014-04-16

Applicant: Glen R Macfarlane

Inventor： Glen R Macfarlane

IPC: F02D41/38 ,  F02M63/02 ,  F02M59/10 ,  F02M59/22 ,  F02M59/30 ,  F02B75/12

CPC classification number: F02D41/38 ,  F02B2075/125 ,  F02D41/3809 ,  F02D41/3845 ,  F02D2041/389 ,  F02D2200/021 ,  F02D2200/0602 ,  F02D2200/0606 ,  F02D2200/101 ,  F02D2200/602 ,  F02M59/102 ,  F02M59/105 ,  F02M59/22 ,  F02M59/30 ,  F02M63/023 ,  F02M63/0265 ,  Y02T10/123

Abstract: A variable stroke direct injection (DI) fuel pump system for an engine includes a DI fuel pump having a stroke member and configured to pump a quantity of fuel based on a stroke of the stroke member. The system includes a variable fuel pump actuator assembly comprising an actuator member configured to actuate the stroke member, a control valve configured to control a flow of hydraulic fluid to the actuator member, and a hydraulic fluid pump configured to pump the hydraulic fluid and be actuated by one or more lobes of a camshaft. The system also includes an engine control unit (ECU) configured to control a variable stroke of the stroke member by controlling the control valve based on one or more operating parameters of the engine.

Abstract translation: 用于发动机的可变冲程直接喷射（DI）燃料泵系统包括具有行程构件的DI燃料泵，并且构造成基于行程构件的冲程泵送一定数量的燃料。 该系统包括可变燃料泵致动器组件，其包括构造成致动行程构件的致动器构件，配置成控制到致动器构件的液压流体流动的控制阀以及被构造成泵送液压流体并被致动的液压泵 通过一个或多个凸轮轴的凸角。 该系统还包括：发动机控制单元（ECU），其配置成通过基于发动机的一个或多个操作参数控制控制阀来控制行程构件的可变行程。