Control apparatus for internal combustion engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorKenichi Kinose
Life of this patent
Estimating the term…
Abstract
An engine ECU executes a program comprising the steps of: calculating a post-warm-up steady-state port wall deposit quantity (a); calculating a shared-injection steady-state port wall deposit quantity (b) based on port wall deposit quantity (a); calculating a difference (c) in one cycle of shared-injection steady-state port wall deposit quantity (b); making a correction considering an engine temperature and an engine speed to calculate a transition correction quantity (d); and converting transition correction quantity (d) into a wave form representing temporal transition to make a wall deposit correction with higher priority on a port injection quantity.
Claims14
A control apparatus for an internal combustion engine having a first fuel injection mechanism injecting fuel into a cylinder and a second fuel injection mechanism injecting the fuel into an intake manifold, comprising:
- a controller controlling said first and second fuel injection mechanisms to bear shares, respectively, of injecting the fuel based on a condition required for said internal combustion engine;
- and
- an estimator estimating wall-deposited fuel of said intake manifold when a fuel injection ratio varies from a state where one of said first and second fuel injection mechanisms does not stop fuel injection, wherein
- said estimator estimates said wall-deposited fuel of said intake manifold based on at least one of a load of said internal combustion engine and said fuel injection ratio, wherein
- said first fuel injection mechanism is an in-cylinder injector and said second fuel injection mechanism is an intake manifold injector.
A control apparatus for an internal combustion engine having first fuel injection means for injecting fuel into a cylinder and second fuel injection means for injecting the fuel into an intake manifold, comprising:
- controlling means for controlling said first and second fuel injection means to bear shares, respectively, of injecting the fuel based on a condition required for said internal combustion engine;
- and
- estimating means for estimating wall-deposited fuel of said intake manifold when a fuel injection ratio varies from a state where one of said first and second fuel injection means does not stop fuel injection, wherein
- said estimating means includes means for estimating said wall-deposited fuel of said intake manifold based on at least one of a load of said internal combustion engine and said fuel injection ratio, wherein
- said first fuel injection means is an in-cylinder injector and said second fuel injection means is an intake manifold injector.
Dependencies are inferred from the claim text.