Title:
INJECTION CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/049838
Kind Code:
A1
Abstract:
The objective of the present invention is to control a drop in the valve-opening speed of injection valves to control fluctuations in the amount of injected fuel. An injection control device 10 is provided with a drive circuit 12 that supplies a drive current to an injection device 1; a boost capacitor C1 that is connected to the drive circuit 12, is charged on the basis of a drive voltage Vd by step-up voltage from the voltage of a battery VB, and applies a charging voltage Vp to the drive circuit 12; a switching element T1 that is connected in series to the boost capacitor C1; and an auxiliary capacitor C2 that is connected in series to the switching element T1, is charged by the voltage of an arbitrary power source Vcc, and applies a charging voltage Vs to the drive circuit 12. The switching element T1 switches between a conductive state and a non-conductive state for the boost capacitor C1 and the auxiliary capacitor C2 . The auxiliary capacitor C2, when switched into the conductive state with the boost capacitor C1, applies the charging voltage Vs of the auxiliary capacitor C2, together with the charging voltage Vp of the boost capacitor C1, to the drive circuit 12.
Inventors:
FURUMORI ATSURO (JP)
Application Number:
PCT/JP2021/018725
Publication Date:
March 10, 2022
Filing Date:
May 18, 2021
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
F02D41/20; F02M51/06
Foreign References:
| JP2003161193A | 2003-06-06 | |||
| JP2014066196A | 2014-04-17 | |||
| JP2015169112A | 2015-09-28 | |||
| JP2019100220A | 2019-06-24 | |||
| JPH0654657U | 1994-07-26 |
Attorney, Agent or Firm:
HIRAKI & ASSOCIATES (JP)
Download PDF:
Previous Patent: OPENING/CLOSING CONTROL DEVICE, VEHICLE, OPENING/CLOSING CONTROL METHOD, AND OPENING/CLOSING CONTROL...
Next Patent: TWO-STROKE ENGINE
Next Patent: TWO-STROKE ENGINE