Title:
燃料噴射量制御装置
Document Type and Number:
Japanese Patent JP4039257
Kind Code:
B2
Abstract:
A fuel injection quantity control device includes: vehicle speed detection unit; gear position detection unit (9 and ECU5); engine revolution speed detection unit(6 and ECU); accelerator opening degree detection unit(7 and ECU); target acceleration value computation unit for finding a basic target acceleration value corresponding to the difference (vsl acc err) between the set limit vehicle speed and an actual vehicle speed and an upper limit value and lower limit value of the basic target acceleration value for each gear position in a map, limiting the basic target acceleration value with the upper limit value and lower limit value, and determining a target acceleration value; basic fuel injection quantity for vehicle speed limit computation unit for determining a basic fuel injection quantity for vehicle speed limit(VSL Base Q) by feedback computation from the difference(vsl acc err) between the determined target acceleration value and the actual acceleration value; an accelerator required injection quantity computation unit for computing an accelerator required injection quantity from the engine revolution speed and accelerator opening degree; and vehicle speed limit injection quantity computation unit for selecting the smaller of the basic fuel injection quantity for vehicle speed limit (VSL Base Q) and accelerator required injection quantity (Pedal Q) and setting it as a fuel injection quantity for vehicle speed limit(Vehicle speed limit Q). The optimum fuel injection quantity is determined for each gear position by deriving the basic target acceleration value corresponding to the difference between the set limit vehicle speed and the actual vehicle speed from a map, finding the upper limit value and the lower limit value of the basic target acceleration value for each gear position in the map.
Inventors:
Futoshi Nakano
Akira Hirata
Koichiro Homoda
Akira Hirata
Koichiro Homoda
Application Number:
JP2003020286A
Publication Date:
January 30, 2008
Filing Date:
January 29, 2003
Export Citation:
Assignee:
Isuzu Motors Limited
International Classes:
F02D41/10; B60K31/04; F02D45/00; F02D29/00; F02D29/02; F02D31/00; F02D41/02; F02D41/14
Domestic Patent References:
| JP10250408A | ||||
| JP6048227A | ||||
| JP8151946A |
Foreign References:
| US6135918 |
Attorney, Agent or Firm:
Nobuo Kinutani