| abstract |
The present invention provides a vehicle control device capable of improving performance such as fuel consumption by appropriately switching between all-cylinder operation mode, partial cylinder stop mode, and all-cylinder stop mode according to the driving state of a vehicle. When it is determined in step 3 that the target travel load value Lt is greater than the predetermined load value L2, in step 11, combustion is performed in all cylinders of the left and right banks to generate a large torque from the internal combustion engine 51. . If it is determined in step 4 that the target travel load value Lt is greater than the intermediate load value L1, in step 12, the three cylinders on the right bank side are stopped and the combustion (reducing cylinder operation) is controlled only on the left bank side. . Since the combustion load of the operating cylinder increases due to the reduced cylinder operation, in addition to the reduction of the pumping loss, the combustion is improved and the thermal efficiency itself is increased. Therefore, the fuel consumption of the internal combustion engine 51 can be greatly reduced as compared with the all cylinder operation. [Selection] Figure 9 |