Vehicle control system for minimizing fuel consumption

摘要

A control unit of a vehicle control system estimates running-condition of a vehicle for a predetermined estimation period. A fuel-amount estimating portion estimates an engine condition related to a cooling efficiency, based on the estimated running condition. The control unit estimates multiple possible control patterns and calculates evaluation values related to the cooling efficiency for respective cases, in which a compressor is operated in accordance with each of the control patterns. The control unit selects one of control patterns to actually operate the compressor in accordance with the selected control pattern, so that fuel consuming amount can be reduced.

主权项

1. The A vehicle control system for controlling a driving source of a vehicle comprising:
a processor for executing non-transitory portions comprising:
a running-condition estimating portion for estimating a running condition of the vehicle for a predetermined estimation period based on information related to vehicle condition;a driving-amount calculating portion for calculating an amount of driving power necessary for the driving source in order to operate an accessory device with the driving power;an accessory-device controlling portion for controlling an operation of the accessory device; anda control-pattern calculating portion for calculating a control pattern for the accessory device and controlling the accessory-device controlling portion in accordance with the control pattern, wherein the control pattern is calculated based on:
(i) characteristic data showing a relationship between the driving power of the driving source and a fuel consuming amount;(ii) information from the running-condition estimating portion; and(iii) information from the driving-amount calculating portion; wherein the fuel consuming amount of the driving source is minimized for the predetermined estimation period, when the accessory device is operated in accordance with the control pattern calculated by the control-pattern calculating portion; wherein the control-pattern calculating portion is composed of:
a control-pattern estimating portion for estimating multiple possible control patterns;a threshold-value calculating portion for calculating threshold values based on the information from the accessory-condition detecting portion for the condition of the accessory device or the accessory system, wherein the threshold values are related to the operation efficiency of the accessory device or the accessory system; anda selecting portion for selecting one control pattern for the accessory device from the multiple possible control patterns based on the threshold value.