Engine
AssigneeMitsubishi Heavy Industries, Ltd.
InventorsYuki Koshiba, Masafumi Mori, Kengo Tanaka, Takashi Ueda, Shigetoshi Sugata
Life of this patent
Estimating the term…
Abstract
An engine according to an embodiment includes at least one cylinder, at least one piston disposed in the at least one cylinder, a plurality of fuel injection valves disposed on the at least one cylinder, the plurality of fuel injection valves including a first fuel injection valve having a predetermined total hole area and a second fuel injection valve having a total hole area smaller than the total hole area of the first fuel injection valve, and a control device for controlling the first fuel injection valve and the second fuel injection valve according to a load of the engine.
Claims12
An engine, comprising:
- a cylinder;
- at least one piston disposed in the cylinder;
- a plurality of fuel injection valves disposed on the cylinder, the plurality of fuel injection valves including a first fuel injection valve having a predetermined total hole area and a second fuel injection valve having a total hole area smaller than the total hole area of the first fuel injection valve;
- and
- a control device for controlling the first fuel injection valve and the second fuel injection valve according to a load of the engine,
- wherein the engine includes at least two cylinders, and
- wherein the at least two cylinders are configured such that a cylinder total hole area, which is a sum of the total hole area of the first fuel injection valve and the total hole area of the second fuel injection valve, is different for each of the at least two cylinders.
An engine, comprising:
- a cylinder;
- at least one piston disposed in the cylinder;
- a plurality of fuel injection valves disposed on the cylinder, the plurality of fuel injection valves including a first fuel injection valve having a predetermined total hole area and a second fuel injection valve having a total hole area smaller than the total hole area of the first fuel injection valve,
- a control device for controlling the first fuel injection valve and the second fuel injection valve according to a load of the engine,
- a first fuel pump for supplying fuel to the first fuel injection valve;
- and
- a second fuel pump for supplying fuel to the second fuel injection valve,
- wherein the engine includes at least two cylinders,
- wherein the control device is configured to control the first fuel injection valve and the second fuel injection valve in each of the at least two cylinders, according to the load, and
- wherein the control device is configured to control the first fuel pump and the second fuel pump to increase a pressure of fuel supplied to the first fuel injection valve and the second fuel injection valve as the load increases, and is configured to control the first fuel pump and the second fuel pump to cause the pressure of fuel supplied to the second fuel injection valve to be higher than the pressure of fuel supplied to the first fuel injection valve at high load.
An engine, comprising:
- a cylinder;
- at least one piston disposed in the cylinder;
- a plurality of fuel injection valves disposed on the cylinder, the plurality of fuel injection valves including a first fuel injection valve having a predetermined total hole area and a second fuel injection valve having a total hole area smaller than the total hole area of the first fuel injection valve;
- and
- a control device for controlling the first fuel injection valve and the second fuel injection valve according to a load of the engine,
- wherein the control device is configured to perform control so as to decide on the any fuel injection valve of the first fuel injection valve and the second fuel injection valve to inject fuel, according to a fuel injection timing, when performing multi-stage injection.
Dependencies are inferred from the claim text.