CONTROL METHOD FOR ENGINE HAVING SUPERCHARGER,申请号JP19930143719-传众专利搜索

CONTROL METHOD FOR ENGINE HAVING SUPERCHARGER

申请公布号：JPH0719060(A)

申请号：JP19930143719

申请日期：1993.06.15

申请公布日期：1995.01.20

申请人：

FUJI HEAVY IND LTD

发明人：NAMEKI MINORU

分类号：F02B37/007

主分类号：F02B37/007

摘要：PURPOSE:To eliminate an unpleasant feeling of an operator caused by a valve operating noise by speeding up switching to a single turbo condition from a twin turbo condition after an engine is raced when a vehicle is stopped. CONSTITUTION:After an engine operating area is shifted to a single turbo area from a twin turbo area, single turbo area continuing time C2 is counted (S67), and this continuing time C2 and preset time T4 are compared (S68) with each other, and when the continuing time passes the preset time (C2>=T4), both an intake air control valve 55 and an exhaust air control valve 53 are switched to valve closing from valve opening, and a condition is switched to a single turbo condition of only a primary turbocharger 40 from a twin turbo condition of supercharging operation of both turbochargers 40 and 50. Before the continuing time passes the preset time (C2<T4), a vehicle stopping condition is judged (S70), and When it is judged as the stopping condition (vehicle speed V<= preset value V2), even if the continuing time does not pass the preset time T4, both control valves are switched to valve closing at once, and the condition is switched to the single turbo condition.