METHOD TO DETERMINE THE USE OF A BLOCK HEATER

    公开(公告)号:EP3581787A1

    公开(公告)日:2019-12-18

    申请号:EP19178869.4

    申请日:2019-06-06

    IPC分类号: F02N19/10 F02D41/06

    摘要: A method of determining whether a block heater has been used prior to starting an internal combustion engine comprising;
    a) monitoring the temperature with time of the intake air T subsequent to the start of the engine;
    b) determining whether there is a subsequent drop in said temperature after starting;
    c) if a temperature drop is determined in step b), determining a parameter of the temperature drop with time, including the step of integrating the temperature difference (Tref2-T) between a reference temperature Tref2 and the measured temperature T, between first and second time points (ts, te), to provide an integral value, said integral value being the parameter determined in step c);
    d) determining if said parameter becomes larger than a predetermined threshold (thr1/thr2).
    e) if step d) is fulfilled, indicating a block heater has been used.

    METHOD AND DEVICE FOR CONTROLLING COMPRESSION IGNITION ENGINE

    公开(公告)号:EP3550130A1

    公开(公告)日:2019-10-09

    申请号:EP16922869.9

    申请日:2016-11-30

    IPC分类号: F02D41/06

    摘要: A system for controlling a compression ignition engine includes: a speed obtaining section (102) which obtains an engine speed; and an injection amount setting section (105) which sets, in a start period after the start of cranking, a fuel injection amount to be injected by injectors (6) in next and subsequent cycles. If an engine speed achieved by combustion in an (n - 1)-th cycle is higher than or equal to a determination threshold value (R0) and lower than a lower limit (R1) of the resonance range (Br), the injection amount setting section (105) sets the fuel injection amount for the n-th cycle to a jump-over injection amount (F2), and sets the fuel injection amount for the (n + 1)-th cycle to a resonance induction reducing amount (F3), which is smaller than the jump-over injection amount (F2).