公开(公告)号：WO2018004426A1

公开(公告)日：2018-01-04

申请号：PCT/SE2017/050658

申请日：2017-06-19

Applicant: SCANIA CV AB

Inventor： RUNDQVIST, Erik

IPC: F02D41/38 ,  B60K15/00 ,  F02D41/00 ,  F02D41/30 ,  F02M65/00 ,  G01K7/00 ,  G01N25/00

CPC classification number: F02D41/1401 ,  B60K15/00 ,  B60K15/01 ,  B60K15/03 ,  B60K2015/0321 ,  F02D41/345 ,  F02D41/3809 ,  F02D2041/1433 ,  F02D2200/021 ,  F02D2200/0602 ,  F02D2200/0606 ,  F02D2200/0616 ,  F02D2200/501 ,  F02D2200/70 ,  F02D2250/04 ,  F02M65/00 ,  F02M65/001 ,  G01K7/427 ,  G01K2205/00 ,  Y02T10/44

Abstract: A method (300) and a system (200) for determining a temperature (T tot ) for pressurized fuel included in a high pressure fuel system (250) arranged for providing fuel to an engine (101) are presented. The method (300) includes determining a first temperature (T 1 )for a first fuel volume (V 1 ) included in a first section (251) of the high pressure fuel system (250), where the first section (251) includes a common rail fuel system (253). The method (300) further includes determining a second temperature (T 2 ) for a second fuel volume (V 2) included in a second section (252) of the high pressure fuel system (250), where the second section (252) includes at least one fuel injector (271, 272, 273,..., 27n) arranged in a cylinder head (280) of the engine (101). The method (300) also includes the step of determining the temperature (T tot ) for the pressurized fuel based at least on the first temperature (T 1 ) and on the second temperature (T 2 ); T tot =f(T 1 , T 2 ).

Abstract translation: 一种用于确定包括在高压燃料系统（250）中的加压燃料的温度（T tot）的方法（300）和系统（200），所述高压燃料系统（250） 给出了发动机（101）的燃料。 该方法（300）包括确定包括在高压燃料的第一区段（251）中的第一燃料容积（V 1）的第一温度（T 1） 系统（250），其中第一部分（251）包括共轨燃料系统（253）。 方法（300）还包括确定包括在高压的第二部分（252）中的第二燃料体积（V 2）的第二温度（T 2） 燃料系统250，其中第二部分252包括布置在发动机101的汽缸盖280中的至少一个燃料喷射器271,272,273，...，27n。 方法（300）还包括以下步骤：至少基于第一温度（T 1）和第二温度（T 1）确定加压燃料的温度（T tot） 温度（T _{2 ）; T tot = f（T 1 ，T 2 ）。}

公开(公告)号：WO2017091140A1

公开(公告)日：2017-06-01

申请号：PCT/SE2016/051173

申请日：2016-11-28

Applicant: SCANIA CV AB

Inventor： STENLÅÅS, Ola ,  RUNDQVIST, Erik ,  CRESCENZO, Domenico

IPC: F02D41/38 ,  F02D41/40

CPC classification number: F02D41/3809 ,  F02D41/008 ,  F02D41/402 ,  F02D2200/0602 ,  F02D2250/04 ,  F02D2250/14 ,  F02M63/0225

Abstract: The present invention relates to a method for determining pressure in a fuel accumulator tank of a multi cylinder internal combustion engine during engine operation. Pressurised fuel is intended to be distributed from said accumulator tank to the cylinders by means of fuel injectors so as to rotate a crankshaft of the engine. A pump unit is provided for providing pressurised fuel to said accumulator tank by means of pump actions comprising pump strokes. The method comprises the step of determining (S1) the pressure in the fuel accumulator tank based upon a pressure sampling in connection to at least one earlier fuel injection as a basis for controlling fuel injection to an individual cylinder. The method further comprises the step of performing (S1a) said pressure sampling based upon the relationship between the number of pump strokes and the number of injections per crank shaft revolution such that said pressure sampling occurs in connection to a fuel injection where the mutual relationship between that fuel injection and the pump action reoccurs at the fuel injection for which the determined pressure is intended to form a basis. The present invention also relates to a system for determining pressure in a fuel accumulator tank of a multi cylinder internal combustion engine during engine operation. The present invention also relates to a vehicle. The present invention also relates to a computer program and a computer program product.

Abstract translation: 本发明涉及一种用于在发动机运行期间确定多缸内燃机的燃料存储罐中的压力的​​方法。 意图通过燃料喷射器将加压燃料从所述蓄压罐分配到汽缸，以便旋转发动机的曲轴。 提供泵单元，用于通过包括泵冲程的泵动作将加压燃料提供到所述蓄压罐。 该方法包括基于与至少一个较早的燃料喷射有关的压力采样来确定（S1）燃料储存罐中的压力作为用于控制燃料喷射到单个气缸的基础的步骤（S1）。 该方法还包括以下步骤：基于泵冲程次数和每个曲轴转速的喷射次数之间的关系执行（S1a）所述压力采样，使得所述压力采样连同燃料喷射发生，其中 燃料喷射和泵动作在所确定的压力旨在形成基础的燃料喷射处重新发生。 本发明还涉及一种用于在发动机运行期间确定多缸内燃机的燃料储存罐中的压力的​​系统。 本发明还涉及一种车辆。 本发明还涉及一种计算机程序和一种计算机程序产品。

公开(公告)号：WO2013089621A1

公开(公告)日：2013-06-20

申请号：PCT/SE2012/051367

申请日：2012-12-10

Applicant: SCANIA CV AB

Inventor： DYRSCH, Rikard ,  RUNDQVIST, Erik

IPC: F02M65/00 ,  F02M37/00 ,  F02M63/02 ,  F02D41/38

CPC classification number: F02M65/003 ,  F02D41/221 ,  F02D41/3845 ,  F02D2041/224 ,  F02D2200/0602 ,  F02M37/00

Abstract: The invention relates to a method for error detection in a fuel-supply system comprising a feed device (260) for achieving a fuel-supply pressure (P-rail) in an engine (280) and a valve device (250) via which fuel is supplied to the feed device (260) from a container (230), in addition to devices (287) for identifying said fuel-supply pressure (P_rail) in said engine (280). The method comprises the steps of: - determining (s410) a prevailing operating status in said engine (280): - determining (s415) whether said determined operating status corresponds to a predetermined operating status, which operating status is regarded as stationary; - continuously determining (s420) a progression in said fuel-supply pressure (P_rail) during said predetermined operating status. The method also comprises the steps of: determining (s430) the number of occasions (N) within a specified period (DT) said fuel-supply pressure (P_rail) alternately reaches a maximum or minimum value (max1, mini, max2, min2, max3, min3) that deviates from a predetermined reference value (P_rail_ref) by more than a predetermined deviation value; - if said number of occasions (N) exceeds a specified value (TH), taking this as an indication that said valve device (250) is not functioning as intended. The invention relates also to a computer programme product comprising programme code (P) for a computer (200; 210) for implementing a method according to the invention. The invention relates also to a device and a motor vehicle equipped with the device.

Abstract translation: 本发明涉及一种用于在燃料供应系统中进行误差检测的方法，该方法包括用于实现发动机（280）和阀装置（250）中的燃料供应压力（P轨）的进料装置（260）和燃料 除了用于识别所述发动机（280）中的所述燃料供应压力（P_rail）的装置（287）之外，还从容器（230）供应到所述进给装置（260）。 该方法包括以下步骤： - 确定（s410）所述发动机（280）中的主要运行状态： - 确定（s415）所述确定的运行状态是否对应于预定运行状态，哪个运行状态被认为是静止的; - 在所述预定操作状态期间连续地确定所述燃料供应压力（P_rail）的进展（s420）。 该方法还包括以下步骤：确定（s430）指定时间段内的场合数（N），所述燃料供应压力（P_rail）交替达到最大或最小值（max1，mini，max2，min2， max3，min3），其偏离预定参考值（P_rail_ref）大于预定偏差值; - 如果所述次数（N）超过规定值（TH），则将其作为所述阀装置（250）不按预期运行的指示。 本发明还涉及包括用于实现根据本发明的方法的计算机（200; 210）的程序代码（P）的计算机程序产品。 本发明还涉及装备有该装置的装置和机动车辆。

公开(公告)号：WO2013089619A1

公开(公告)日：2013-06-20

申请号：PCT/SE2012/051362

申请日：2012-12-10

Applicant: SCANIA CV AB

Inventor： CARLSSON, Ulf ,  RUNDQVIST, Erik

IPC: F16H61/16 ,  B60W10/06 ,  B60W10/11 ,  B60W30/19 ,  F16H61/18

CPC classification number: B60W10/06 ,  B60W10/02 ,  B60W10/11 ,  B60W30/19 ,  B60W50/0205 ,  B60W2510/0638 ,  B60W2710/0644 ,  B60Y2400/421 ,  F16H61/0403 ,  F16H61/12 ,  F16H61/16 ,  F16H63/50 ,  F16H2061/0474 ,  F16H2061/161

Abstract: The invention relates to a method pertaining to changing gear in a power train of a motor vehicle (100; 110) provided with an engine (230), a clutch device (240) and a gearbox (250) without synchronising rings. The method comprises the step of demanding (s310) gear ratio change in said gearbox (250). The method comprises also the steps of interrupting torque transmission (s330) between said engine (230) and said gearbox (250) by means of said clutch device (240), choosing (s340) an engine speed set-point value (n_ref), determining (s360) whether said engine (230) responds to a demand for said engine (230) to be directed towards said speed set-point value (n_ref), and changing gear ratio (s370) if said engine (230) responds to said demand. The invention relates also to a computer programme product comprising programme code (P) for a computer (200; 210) for implementing a method according to the invention. The invention relates also to a device and a motor vehicle (100; 110) equipped with the device.

Abstract translation: 本发明涉及一种有关改变设置有发动机（230），离合器装置（240）和齿轮箱（250）而不具有同步环的机动车辆（100; 110）的动力传动系中的齿轮的方法。 该方法包括在所述变速箱（250）中要求（s310）变速比变化的步骤。 该方法还包括通过所述离合器装置（240）中断所述发动机（230）和所述变速箱（250）之间的扭矩传递（s330）的步骤，选择（s340）发动机转速设定值（n_ref） 确定（s360）所述发动机（230）是否响应于对所述发动机（230）的要求指向所述速度设定点值（n_ref），以及如果所述发动机（230）响应于所述速度设定值 需求。 本发明还涉及包括用于实现根据本发明的方法的计算机（200; 210）的程序代码（P）的计算机程序产品。 本发明还涉及配备有该装置的装置和机动车辆（100; 110）。