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公开(公告)号：US11225918B2
公开(公告)日：2022-01-18
申请号：US17096974
申请日：2020-11-13
发明人： Masahiro Wanibe
摘要： An engine device is equipped with an engine that is supplied with fuel from a fuel tank and that has a throttle valve arranged in an intake pipe, a supercharger that has a compressor arranged in the intake pipe, and an evaporative fuel treatment device that has a supply pipe for supplying evaporative fuel gas containing evaporative fuel generated in the fuel tank to the intake pipe in a region upstream of the compressor, and a purge valve provided in the supply pipe. Moreover, the throttle valve is controlled such that an opening degree of the throttle valve becomes larger when upstream purge for supplying evaporative fuel gas to the intake pipe via the supply pipe is carried out than when upstream purge is not carried out, while the supercharger is in operation.
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公开(公告)号：US10941717B2
公开(公告)日：2021-03-09
申请号：US16658284
申请日：2019-10-21
发明人： Masahiro Wanibe
摘要： When a required pressure ratio RP* is less than or equal to a calculation switching pressure ratio RPwot, an engine control unit calculates, as a target opening degree TA*, a throttle opening degree TA at which a throttle upstream-downstream pressure ratio RP is the required pressure ratio RP*. When the required pressure ratio RP* exceeds the calculation switching pressure ratio RPwot, the engine control unit obtains a switching point opening degree TAwot, a switching point load factor KLwot and a maximum load factor KLmax, and calculates the target opening degree TA* as a value that has a linear relationship with the required load factor KL* between the switching point opening degree TAwot and the maximum opening degree TAmax.
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公开(公告)号：US10738719B2
公开(公告)日：2020-08-11
申请号：US16260107
申请日：2019-01-29
发明人： Masahiro Wanibe , Toshiaki Otani
摘要： A controller for an internal combustion engine defines a difference between a throttle opening degree target value before correction and a throttle opening degree target value after correction as a correction amount. The difference between a downstream pressure that is a pressure downstream of a throttle valve in the intake passage and a required value of the downstream pressure is defined as a pressure difference. The controller corrects the throttle opening degree target value so that the correction amount increases as the absolute value of the pressure difference increases, the correction amount is smaller when the throttle opening degree is large than when the throttle opening degree is small, and the correction amount is smaller when the flow velocity of intake air in the intake passage is low that when the flow velocity of the intake air is high.
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