US 9,957,922 B2Granted

Water supply control apparatus for in-cylinder injection type internal combustion engine

AssigneeToyota Jidosha Kabushiki Kaisha

InventorKentaro Nishida

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Abstract

A water supply control apparatus is applied to an in-cylinder injection type internal combustion engine (1) which injects fuel from a central area (2a) in a cylinder (2). The water supply control apparatus comprises a condensed water supply mechanism (22) where a state of supplying condensed water (CW) into the cylinder (2) is changeable between a first supply state that the condensed water (CW) is supplied to a whole inside of the cylinder (2) and a second supply state that the condensed water (CW) is limitedly supplied to the central area (2a) of the cylinder (2). In the second supply state, the supply amount of condensed water supplied into the cylinder (2) in the second supply state is less than the supply amount of condensed water supplied into the cylinder (2) in the first supply state.

Claims10

Dependent claims

A water supply control apparatus for an in-cylinder injection type internal combustion engine, the water supply control apparatus being applied to the in-cylinder injection type internal combustion engine which injects fuel from a central area in a cylinder, and comprising:

a water supply wherein a state of supplying water into the cylinder from the water supply is changeable between a first supply state in which the water is supplied to an inside of the cylinder and a second supply state in which the water is supplied into the cylinder so that a supply amount of the water supplied to a central area lying in the cylinder is more than a supply amount of the water supplied to a peripheral area lying in the cylinder;
and
a computer configured to control the water supply so that the supply amount of the water supplied into the cylinder in a case of the second supply state is less than the supply amount of the water supplied into the cylinder in a case of the first supply state.

Dependencies are inferred from the claim text.

Facts

Application: 15/032,152Filed 6 Nov 2014
Priority: JP 2013-2318308 Nov 2013
Published: US 2016/0258388 A18 Sep 2016
Granted: 1 May 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification17 codes

F02M 25/03
Adding water: into the cylinder or the pre-combustion chamber
F02B 17/005
Engines characterised by means for effecting stratification of charge in cylinders: having direct injection in the combustion chamber
F02B 23/101
With separate admission of air and fuel into cylinder: the injector being placed on or close to the cylinder centre axis, e.g. with mixture…
F02B 31/085
Having multiple air inlets: having two inlet valves