# US 9,518,517 B2 · Engine control device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,518,517 B2 - Document ID: US9518517B2 - Status: Granted - Kind: B2 - Application number: 14/892,871 - Filed: 2014-03-06 - Published: 2016-03-31 - Granted: 2016-12-13 - Earliest claimed: 2013-06-28 - Assignees: Mitsubishi Jidosha Kogyo Kabushiki Kaisha - Applicants: Mitsubishi Jidosha Kogyo Kabushiki Kaisha - Inventors: Takashi Kawabe; Koji Hata; Fumiaki Hiraishi - Web page: https://patentgrep.com/patent/US9518517B2 ## CPC - F02D 41/0007: {for control of turbo-charged or super-charged engines (control of the pumps per se F02B37/12)} - F02B 75/12: Other methods of operation - F02D 13/0261: {Controlling the valve overlap} - F02D 23/02: the engines being of fuel-injection type - F02D 41/3094: {the fuel injection being effected by at least two different injectors, e.g. one in the intake manifold and one in the cylinder} - F02D 41/345: {Controlling injection timing (F02D41/365 takes precedence)} - F02M 26/03: with a single mechanically or electrically driven intake charge compressor - F02M 26/04: with a single turbocharger - F02M 26/40: with timing means in the recirculation passage, e.g. cyclically operating valves or regenerators; with arrangements involving pressure pulsations - F02M 26/41: characterised by the arrangement of the recirculation passage in relation to the engine, e.g. to cylinder heads, liners, spark plugs or manifolds; characterised by the arrangement of the recirculation passage in relation to specially adapted combustion chambers - F02B 37/16: by bypassing charging air - F02B 37/18: by bypassing exhaust {from the inlet to the outlet of turbine or to the atmosphere} - F02B 2075/125: {Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-combustion chamber} - F02D 41/182: {for the control of a fuel injection device} - F02D 2041/001: {for engines with variable valve actuation} - F02D 2041/389: {for injecting directly into the cylinder} - F02D 2200/0411: Volumetric efficiency - F02D 2200/602: Pedal position - F02M 69/046: {for injecting into both the combustion chamber and the intake conduit} - Y02T 10/12: Improving ICE efficiencies - Y02T 10/40: Engine management systems - F02D: CONTROLLING COMBUSTION ENGINES (vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed B60K31/00; conjoint control of vehicle sub-units of different type or different function, road vehicle drive control systems for purposes other than the control of a single sub-unit B60W) - F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G) - F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract An engine control device (1) for an engine provided with a supercharger (30), including a cylinder injection valve (11), a port injection valve (12), and a variable valve actuating mechanism (40). The device includes an injection controller (3) that controls injections of fuel through the cylinder injection valve (11) and through the port injection valve (12), on the basis of a load P on the engine (10), and a variable valve controller (5) that controls the variable valve actuating mechanism (40) on the basis of the load P. The variable valve controller (5) provides a valve overlap period in an operating state where the load P is equal to or greater than a first predetermined value P1. The injection controller (3), in the operating state where the load P is equal to or greater than the first predetermined value P1, carries out a cylinder injection and a port injection, and in an operating state where the load P is equal to or greater than a second predetermined value P2 that is greater than the first predetermined value P1, retards timing for injecting the fuel through the port injection valve (12), relative to the timing for injecting the fuel in an operating state where the load P is less than the second predetermined value P2. ## Claims ### Claim 1 An engine control device for an engine provided with a supercharger, the engine comprising a cylinder injection valve for injecting a fuel into a cylinder in the engine; a port injection valve for injecting the fuel into an intake port of the cylinder; and a variable valve actuating mechanism that varies open/close timing of at least one of an intake valve and an exhaust valve of the engine, the engine control device comprising: an injection controller that controls injections of the fuel through the cylinder injection valve and through the port injection valve, on the basis of a load on the engine; and a variable valve controller that controls the variable valve actuating mechanism on the basis of the load, wherein the variable valve controller provides a valve overlap period for opening both the intake valve and the exhaust valve, in an operating state where the load is equal to or greater than a first predetermined value, and the injection controller: in the operating state where the load is equal to or greater than the first predetermined value, causes the fuel to be injected through the cylinder injection valve and through the port injection valve, and in an operating state where the load is equal to or greater than a second predetermined value that is greater than the first predetermined value, retards timing for injecting the fuel through the port injection valve, relative to the timing for injecting the fuel in an operating state where the load is less than the second predetermined value. ### Claim 2 (depends on 1) The engine control device according to claim 1, wherein the variable valve controller extends the valve overlap period further, as the load increases, and the injection controller increases a magnitude of the retardation of the timing for injecting the fuel through the port injection valve further, as the load increases. ### Claim 3 (depends on 1) The engine control device according to claim 1, wherein the injection controller causes the fuel to be injected only through the port injection valve, in an operating state where the load is less than the first predetermined value. ### Claim 4 (depends on 2) The engine control device according to claim 2, wherein the injection controller causes the fuel to be injected only through the port injection valve, in an operating state where the load is less than the first predetermined value. ### Claim 5 (depends on 1) The engine control device according to claim 1, wherein the injection controller causes the fuel to be injected through the cylinder injection valve separately during an intake stroke and during a compression stroke, in the operating state where the load is equal to or greater than the second predetermined value. ### Claim 6 (depends on 2) The engine control device according to claim 2, wherein the injection controller causes the fuel to be injected through the cylinder injection valve separately during an intake stroke and during a compression stroke, in the operating state where the load is equal to or greater than the second predetermined value. ### Claim 7 (depends on 3) The engine control device according to claim 3, wherein the injection controller causes the fuel to be injected through the cylinder injection valve separately during an intake stroke and during a compression stroke, in the operating state where the load is equal to or greater than the second predetermined value. ### Claim 8 (depends on 4) The engine control device according to claim 4, wherein the injection controller causes the fuel to be injected through the cylinder injection valve separately during an intake stroke and during a compression stroke, in the operating state where the load is equal to or greater than the second predetermined value. ### Claim 9 (depends on 1) The engine control device according to claim 1, wherein the engine provided with the supercharger comprises: an exhaust turbine that is provided in an exhaust path of the engine, and is rotatable by an exhaust stream; an intake compressor that is provided in an intake path of the engine, and is rotatable with a rotation of the exhaust turbine by being coupled to the exhaust turbine; and a supercharging pressure adjustment valve that is provided in the exhaust path, and is switchable between a closed state to supply the exhaust stream to the exhaust turbine, and an open state to exhaust the exhaust stream, bypassing the exhaust turbine, and when the supercharging pressure adjustment valve is in the closed state, the injection controller: in the operating state where the load is equal to or greater than the first predetermined value, causes the fuel to be injected through the cylinder injection valve and through the port injection valve, and in the operating state where the load is equal to or greater than the second predetermined value that is greater than the first predetermined value, retards timing for injecting the fuel through the port injection valve, relative to the timing for injecting the fuel in the operating state where the load is less than the second predetermined value. ### Claim 10 (depends on 2) The engine control device according to claim 2, wherein the engine provided with the supercharger comprises: an exhaust turbine that is provided in an exhaust path of the engine, and is rotatable by an exhaust stream; an intake compressor that is provided in an intake path of the engine, and is rotatable with a rotation of the exhaust turbine by being coupled to the exhaust turbine; and a supercharging pressure adjustment valve that is provided in the exhaust path, and is switchable between a closed state to supply the exhaust stream to the exhaust turbine, and an open state to exhaust the exhaust stream, bypassing the exhaust turbine, and when the supercharging pressure adjustment valve is in the closed state, the injection controller: in the operating state where the load is equal to or greater than the first predetermined value, causes the fuel to be injected through the cylinder injection valve and through the port injection valve, and in the operating state where the load is equal to or greater than the second predetermined value that is greater than the first predetermined value, retards timing for injecting the fuel through the port injection valve, relative to the timing for injecting the fuel in the operating state where the load is less than the second predetermined value. ### Claim 11 (depends on 3) The engine control device according to claim 3, wherein the engine provided with the supercharger comprises: an exhaust turbine that is provided in an exhaust path of the engine, and is rotatable by an exhaust stream; an intake compressor that is provided in an intake path of the engine, and is rotatable with a rotation of the exhaust turbine by being coupled to the exhaust turbine; and a supercharging pressure adjustment valve that is provided in the exhaust path, and is switchable between a closed state to supply the exhaust stream to the exhaust turbine, and an open state to exhaust the exhaust stream, bypassing the exhaust turbine, and when the supercharging pressure adjustment valve is in the closed state, the injection controller: in the operating state where the load is equal to or greater than the first predetermined value, causes the fuel to be injected through the cylinder injection valve and through the port injection valve, and in the operating state where the load is equal to or greater than the second predetermined value that is greater than the first predetermined value, retards timing for injecting the fuel through the port injection valve, relative to the timing for injecting the fuel in the operating state where the load is less than the second predetermined value. ### Claim 12 (depends on 4) The engine control device according to claim 4, wherein the engine provided with the supercharger comprises: an exhaust turbine that is provided in an exhaust path of the engine, and is rotatable by an exhaust stream; an intake compressor that is provided in an intake path of the engine, and is rotatable with a rotation of the exhaust turbine by being coupled to the exhaust turbine; and a supercharging pressure adjustment valve that is provided in the exhaust path, and is switchable between a closed state to supply the exhaust stream to the exhaust turbine, and an open state to exhaust the exhaust stream, bypassing the exhaust turbine, and when the supercharging pressure adjustment valve is in the closed state, the injection controller: in the operating state where the load is equal to or greater than the first predetermined value, causes the fuel to be injected through the cylinder injection valve and through the port injection valve, and in the operating state where the load is equal to or greater than the second predetermined value that is greater than the first predetermined value, retards timing for injecting the fuel through the port injection valve, relative to the timing for injecting the fuel in the operating state where the load is less than the second predetermined value. ### Claim 13 (depends on 5) The engine control device according to claim 5, wherein the engine provided with the supercharger comprises: an exhaust turbine that is provided in an exhaust path of the engine, and is rotatable by an exhaust stream; an intake compressor that is provided in an intake path of the engine, and is rotatable with a rotation of the exhaust turbine by being coupled to the exhaust turbine; and a supercharging pressure adjustment valve that is provided in the exhaust path, and is switchable between a closed state to supply the exhaust stream to the exhaust turbine, and an open state to exhaust the exhaust stream, bypassing the exhaust turbine, and when the supercharging pressure adjustment valve is in the closed state, the injection controller: in the operating state where the load is equal to or greater than the first predetermined value, causes the fuel to be injected through the cylinder injection valve and through the port injection valve, and in the operating state where the load is equal to or greater than the second predetermined value that is greater than the first predetermined value, retards timing for injecting the fuel through the port injection valve, relative to the timing for injecting the fuel in the operating state where the load is less than the second predetermined value. ### Claim 14 (depends on 6) The engine control device according to claim 6, wherein the engine provided with the supercharger comprises: an exhaust turbine that is provided in an exhaust path of the engine, and is rotatable by an exhaust stream; an intake compressor that is provided in an intake path of the engine, and is rotatable with a rotation of the exhaust turbine by being coupled to the exhaust turbine; and a supercharging pressure adjustment valve that is provided in the exhaust path, and is switchable between a closed state to supply the exhaust stream to the exhaust turbine, and an open state to exhaust the exhaust stream, bypassing the exhaust turbine, and when the supercharging pressure adjustment valve is in the closed state, the injection controller: in the operating state where the load is equal to or greater than the first predetermined value, causes the fuel to be injected through the cylinder injection valve and through the port injection valve, and in the operating state where the load is equal to or greater than the second predetermined value that is greater than the first predetermined value, retards timing for injecting the fuel through the port injection valve, relative to the timing for injecting the fuel in the operating state where the load is less than the second predetermined value. ### Claim 15 (depends on 7) The engine control device according to claim 7, wherein the engine provided with the supercharger comprises: an exhaust turbine that is provided in an exhaust path of the engine, and is rotatable by an exhaust stream; an intake compressor that is provided in an intake path of the engine, and is rotatable with a rotation of the exhaust turbine by being coupled to the exhaust turbine; and a supercharging pressure adjustment valve that is provided in the exhaust path, and is switchable between a closed state to supply the exhaust stream to the exhaust turbine, and an open state to exhaust the exhaust stream, bypassing the exhaust turbine, and when the supercharging pressure adjustment valve is in the closed state, the injection controller: in the operating state where the load is equal to or greater than the first predetermined value, causes the fuel to be injected through the cylinder injection valve and through the port injection valve, and in the operating state where the load is equal to or greater than the second predetermined value that is greater than the first predetermined value, retards timing for injecting the fuel through the port injection valve, relative to the timing for injecting the fuel in the operating state where the load is less than the second predetermined value. ### Claim 16 (depends on 8) The engine control device according to claim 8, wherein the engine provided with the supercharger comprises: an exhaust turbine that is provided in an exhaust path of the engine, and is rotatable by an exhaust stream; an intake compressor that is provided in an intake path of the engine, and is rotatable with a rotation of the exhaust turbine by being coupled to the exhaust turbine; and a supercharging pressure adjustment valve that is provided in the exhaust path, and is switchable between a closed state to supply the exhaust stream to the exhaust turbine, and an open state to exhaust the exhaust stream, bypassing the exhaust turbine, and when the supercharging pressure adjustment valve is in the closed state, the injection controller: in the operating state where the load is equal to or greater than the first predetermined value, causes the fuel to be injected through the cylinder injection valve and through the port injection valve, and in the operating state where the load is equal to or greater than the second predetermined value that is greater than the first predetermined value, retards timing for injecting the fuel through the port injection valve, relative to the timing for injecting the fuel in the operating state where the load is less than the second predetermined value. ### Claim 17 (depends on 1) The engine control device according to claim 1, wherein the supercharging pressure adjustment valve is closed when the load on the engine reaches the first predetermined value or greater.