Patent ID: 8922036
Filing Date: 2014-12-30
Classification: H02P

Abstract:
1. A vehicular power generation system comprising: a generator which is driven by an internal combustion engine and performs power generation; a battery which is charged by power generation electric power of said generator; and a power generation control device which reduces the amount of fuel to be consumed by said internal combustion engine during power generation, wherein said power generation control device includes: a unit which sets a power generation execution operating range that is small in the amount of fuel to be consumed for an increase in torque of said internal combustion engine; a detection unit which detects an operating point of said internal combustion engine based on a rotation speed and one of a torque, intake manifold pressure, and a charging efficiency; a setting unit which calculates a target value of a power generation current with high power generation efficiency based on a rotation speed and a power generation voltage of said generator when the operating point detected by said detection unit is in the power generation execution operating range, and sets electric power generation with high power generation efficiency to a target value from the calculated target value of power generation current; and a control unit which controls so that a generated electric power of said generator is the target value when an operating point of said internal combustion engine is in the power, generation execution operating range, and does not execute control in which a generated electric power of said generator is the target value when the operating point of said internal combustion engine is not in the power generation execution operating range.