Intake controller and method of intake controlling for internal combustion engine

摘要

In an intake controller for an internal combustion engine, an opening controlling unit performs, when a light load operation is performed during a manual forced regeneration process of a diesel particulate filter which reduces an amount of particulate matter included in exhaust gas exhausted from the internal combustion engine, control to form a bypass passage by setting an open-close valve to a fully closed state and a variable turbo nozzle to a fully closed state and which performs, when an amount of the injected fuel detected by a fuel injection amount detecting unit becomes zero, control to set the open-close valve from the fully closed state to a fully opened state and the variable turbo nozzle from the fully closed state to a fully opened state.

主权项

1. A turbocharged internal combustion engine, comprising:
an exhaust gas recirculation passage extracting a part of exhaust gas discharged from the internal combustion engine to recirculate the part of the exhaust gas to an intake passage side of the internal combustion engine; an exhaust gas recirculation valve arranged at the exhaust gas recirculation passage to control a flow rate of the part of the exhaust gas to be circulated through the exhaust gas recirculation passage; a fuel injection amount sensor detecting an amount of the fuel injected into the internal combustion engine; a turbocharger comprising:
a turbine which is rotated by the exhaust gas exhausted from the internal combustion engine;a compressor which is driven with rotation of the turbine to compress external air to the internal combustion engine; anda variable turbo nozzle controlling a flow speed of the exhaust gas being supplied to the turbine; wherein a variable turbo nozzle includes a circular nozzle ring; wherein the circular nozzle ring includes a slide mechanism to adjust a nozzle opening and an opening forming a bypass passage to bypass an amount of the exhaust gas flowing in a turbine vane rotor via the circular nozzle ring when the circular nozzle ring is fully closed; and a controller including:
an engine controller receiving an amount of the injected fuel detected by the fuel infection amount sensor; an actuator controller having executable instructions stored in a non-transitory memory to:
fully close the exhaust gas recirculation valve and the variable turbo nozzle when a manual forced regeneration process of a diesel particulate filter is detected for reducing an amount of diesel particulate matter of the exhaust gas discharged from the internal combustion engine;control the exhaust gas recirculation valve from the fully closed state to a fully opened state and the variable turbo nozzle from the fully closed state to a fully opened state; andsimultaneously close the bypass passage in response to the amount of the injected fuel detected by the fuel injection amount sensor being equal to zero during a light load operation.