Supercharge controller for internal-combustion engine

Abstract

Abstract PURPOSE:To improve the acceleration response from low load area by setting the referential supercharge pressure in step on the basis of engine rotation and accelerator opening while increasing said referential supercharge pressure in accordance to the stepping speed of accelerator. CONSTITUTION:A supercharge pressure setting circuit 40 comprised of CPU is provided with output signals from an engine rotation detecting means 41 and an accelerator opening sensor 42 to retrieve a control map in accordance to both signals thus to decide whether is is full-supercharge, semi-supercharge or no- supercharge. Here, the referential supercharge pressure is set in step such that it will be specific supercharge in semi-supercharge area. While in accordance to the magnitude of accelerator stepping speed detected by an accelerator stepping speed detector 60, the referential supercharge pressure is increased in step. The opening of waste gate valve 24 detouring the turbine of supercharge is feedback controlled on the basis of a referential supercharge signal produced from a setting circuit 40 to control the supercharge pressure of supercharger 21.

Inventors

• 👤 Matasaburo Kaga
• 👤 加賀　又三郎

Bibliographic Details