Abstract: An internal combustion engine with a dual turbocharger system includes an engine, a first turbocharger and a second turbocharger arranged in parallel with each other, an intake switching valve located downstream of a compressor of the second turbocharger, and an exhaust switching valve located downstream of a turbine of the second turbocharger. At large intake air quantities, both turbochargers are operated, while at small to medium intake air quantities only the first turbocharger is operated. At "one-turbocharger-operation", when the engine load is low, the intake switching valve is opened, while the exhaust switching valve is maintained closed. Thus, at small to medium intake air quantities and low engine loads, the intake flow can be introduced through both the compressor of the first turbocharger and the compressor of the second turbocharger. As a result, flow resistance is decreased and acceleration response from low engine loads is improved.

Abstract: An internal combustion engine with a dual turbocharger system includes a first turbocharger operated through an entire intake air quantity, a second turbocharger operated only at large intake air quantities, an exhaust bypass conduit bypassing a turbine of the second turbocharger, an exhaust bypass valve installed in the exhaust bypass conduit, and exhaust bypass valve opening control means for controlling at least one of a time to begin opening and a speed of opening the exhaust bypass valve. The exhaust bypass valve is opened before the turbocharger operation is switched from a "one-turbocharger-operation" to a "two-turbocharger-operation" so that the second turbocharger is run-up and a smooth transition can be obtained.

Abstract: An internal combustion engine with a dual turbocharger system which includes an engine, a first and a second turbocharger arranged in parallel with each other, an intake switching valve located downstream of a compressor of the second turbocharger, an exhaust switching valve located downstream of a turbine of the second turbocharger, and an exhaust bypass valve installed an exhaust bypass conduit bypassing the exhaust switching valve. The exhaust bypass valve is opened on the basis of a charging pressure at low engine speeds and is opened on the basis of an intake air quantity at high engine speeds. As a result of controlling the exhaust bypass valve in this fashion, a smooth transition from a "one-turbocharger-operation" to a "two-turbocharger-operation" can be obtained throughout the entire range of engine speeds.

Abstract: An internal combustion engine with a dual turbocharger system includes a first turbocharger and a second turbocharger arranged in parallel with each other. An exhaust switching valve is installed in an exhaust conduit downstream of a turbine of the second turbocharger and is actuated by a single diaphragm actuator. An exhaust bypass conduit is provided so as to bypass the exhaust switching valve, and an exhaust bypass valve is installed in the exhaust bypass conduit. Before the operation is changed from "one-turbocharger-operation" to "two-turbocharger-operation", the exhaust bypass valve is opened before the exhaust switching valve is opened, to suppress a shock which may occur at the transition from the "one-turbocharger-operation" to "two-turbocharger-operation".

Abstract: A magnetic wave shield tape comprises a strip-shaped conductive member and a strip-shaped insulative member, the strip-shaped magnetic member being fixed to and overlapping the strip-shaped insulative member in the width direction.

Abstract: A diesel engine includes an air intake system, an exhaust system, and an exhaust gas recirculation conduit which leads from the exhaust system to the intake system. An exhaust gas recirculation control valve, which includes a first diaphragm chamber, is mounted in the exhaust gas recirculation conduit so as to regulate the flow of exhaust gas through it. The exhaust gas recirculation control valve is controlled by a controlling fluid pressure supplied to its first diaphragm chamber. A fluid pressure control valve receives supply of fluid pressure and produces this controlling fluid pressure for the exhaust gas recirculation control valve, according to the amount of displacement of a movable member which moves according to the amount of diesel fuel being supplied to the diesel engine.