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    • 2. 发明申请
    • EXHAUST GAS BRAKE CONTROL
    • 排气制动控制
    • WO2008118073A1
    • 2008-10-02
    • PCT/SE2008/050305
    • 2008-03-18
    • SCANIA CV AB (PUBL)TELBORN, Klas
    • TELBORN, Klas
    • F02D9/06F02D21/08F02D41/12
    • F02D41/221F02D9/06F02D41/0007F02D41/0055F02D41/12F02D41/1448F02D2041/2027F02M26/05Y02T10/40
    • An exhaust brake system for a motor vehicle, comprising an adjustable valve (107) in a recirculation passage (115) connecting an exhaust gas conduit (150) with an air intake (105) to the engine (110), and a control unit (120) that produces a first control signal (Cl) in response to a set value (Treq) designating a desired brake -torque, the control unit being adapted to: check if the set value (Treq) designates a brake-torque below a first threshold level and the engine (110) is controlled to a drive-torque below a second threshold level, and if both these conditions are fulfilled, generate a second control signal (C2) such that the adjustable valve (107) is adjusted to a closed position, generate a third control signal (C3) such that the turbo unit (160) opens up maximally with respect to the exhaust gasses (Eout), test if the exhaust gas pressure level (Pm) exceeds a third threshold level, and if so, produces an alarm triggering signal (A) in respect of a first adjustable valve (135) that obstructs the exhaust gas from the engine.
    • 一种用于机动车辆的排气制动系统,包括将排气管道(150)与进气口(105)连接到发动机(110)的再循环通道(115)中的可调节阀(107),以及控制单元 120),其响应于指定期望的制动力矩的设定值(Treq)而产生第一控制信号(C1),所述控制单元适于:检查所述设定值(Treq)是否指示低于第一 阈值水平和发动机(110)被控制到低于第二阈值水平的驱动转矩,并且如果满足这两个条件,则产生第二控制信号(C2),使得可调节阀(107)被调节到关闭 产生第三控制信号(C3),使得涡轮单元(160)相对于废气(Eout)最大开启,测试排气压力水平(Pm)是否超过第三阈值水平,如果是 产生关于第一可调节阀(135)的报警触发信号(A) 这阻碍了来自发动机的废气。
    • 4. 发明申请
    • METHOD RELATING TO DIAGNOSIS OF A COMBUSTION ENGINE
    • 关于燃烧发动机诊断的方法
    • WO2008111899A1
    • 2008-09-18
    • PCT/SE2008/050239
    • 2008-03-04
    • SCANIA CV AB (PUBL)KYLSTRÖM, KimTELBORN, Klas
    • KYLSTRÖM, KimTELBORN, Klas
    • F02D41/22
    • F02D41/3809F02D41/222F02D2041/223F02D2200/0602
    • A method for controlling a common rail system using a signal provided from common rail pressure sensor as one input parameter to control the common rail system. When it is determined that the pressure sensor is malfunctioning, the pressure sensor input parameter is replaced with an input parameter based on the pressure sensor input parameter and a parameter representing an offset value corresponding to a difference between a theoretically correct value and the pressure sensor value. Methods for detecting a malfunctioning pressure sensor are also described: The first method by lowering the pressure until a needle no longer opens, recording the pressure output from the pressure sensor, comparing the recorded pressure value to a predetermined value and determining that a pressure sensor is malfunctioning if the recorded value and the theoretical value differs more than a predetermined threshold value. A second method by dumping fuel from at least one injector, monitoring the pressure reduction rate, recording the pressure value read when the pressure reduction rate starts to decrease and comparing the recorded pressure value to a theoretical value. A third method by increasing the pressure until a safety valve opens, recording the pressure value read in conjunction with the opening of the safety valve and comparing the recorded pressure valve to a theoretical value.
    • 使用由共轨压力传感器提供的信号作为一个输入参数来控制共轨系统的方法,以控制共轨系统。 当确定压力传感器发生故障时,压力传感器输入参数被替换为基于压力传感器输入参数的输入参数,以及表示与理论上正确值和压力传感器值之间的差对应的偏移值的参数 。 还描述了用于检测故障压力传感器的方法:第一种方法是通过降低压力直到针不再打开,记录从压力传感器输出的压力,将记录的压力值与预定值进行比较,并确定压力传感器是 如果记录值和理论值不同于预定阈值,则发生故障。 第二种方法是通过从至少一个喷射器倾倒燃料,监测压力降低率,记录当压力降低率开始减小时读取的压力值,并将记录的压力值与理论值进行比较。 通过增加压力直到安全阀打开的第三种方法,记录与安全阀的打开一起读取的压力值,并将记录的压力阀与理论值进行比较。
    • 8. 发明申请
    • METHOD FOR ADAPTION OF A MASS FLOW SENSOR
    • 适应大流量传感器的方法
    • WO2011119090A1
    • 2011-09-29
    • PCT/SE2011/050299
    • 2011-03-18
    • Scania CV AB (publ)STENLÅÅS, OlaTELBORN, Klas
    • STENLÅÅS, OlaTELBORN, Klas
    • F02D41/18F02M99/00F01N3/20F01N11/00
    • F01N3/22F01N3/0253F01N3/106F01N3/30F01N9/002F01N2560/06F01N2610/03F02D41/025F02D41/1446F02D41/18F02D41/2474F02D41/405Y02T10/26Y02T10/44Y02T10/47
    • Method for adaptation of a mass flow sensor (6) which is intended to measure the mass flow of air in an air intake (7) to a combustion engine (1), according to which method: - unburnt fuel is caused to accompany the exhaust gases produced by the engine to a fuel oxidation device (4) in order to be oxidised in the fuel oxidation device and cause an increase in temperature of the exhaust gases, - a temperature increase value which represents said increase in the temperature of the exhaust gases is determined, - a calculation value which represents the prevailing mass flow of air in the engine's air intake is determined on the basis of said temperature increase value and fuel mass flow values which represent respectively the mass flow of said unburnt fuel and the mass flow of fuel injected into and burnt in the engine, - said calculation value is compared with a corresponding measured value determined by means of the mass flow sensor, and - the mass flow sensor is adapted on the basis of the result of that comparison.
    • 用于调整质量流量传感器(6)的方法,该质量流量传感器旨在测量到内燃机(1)的空气入口(7)中的空气的质量流量,根据哪种方法: - 未燃燃料伴随排气 由发动机产生的燃料到燃料氧化装置(4)以在燃料氧化装置中被氧化并引起排气温度升高的温度增加值,其表示废气温度的所述升高 根据所述温度增加值和分别表示所述未燃燃料的质量流量和所述燃料质量流量的燃料质量流量值来确定表示发动机进气口中主要空气质量流量的计算值, 燃料喷射并燃烧在发动机中, - 将所述计算值与通过质量流量传感器确定的对应测量值进行比较,并且质量流量传感器基于 比较的结果。