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US 7,043,350 B2Granted
Fuel injection control apparatus for internal combustion engine and method thereof, and fuel injection valve
AssigneeHitachi, Ltd.
InventorsNoriyuki Abe, Junichi Furuya
Life of this patent
Estimating the term…
Abstract
An angle of spray of a fuel injection valve is narrowed when a temperature of an internal combustion engine is low, whereas the angle of spray of the fuel injection valve is widened in a low and intermediate load region where the temperature of the internal combustion engine is high. The angle of spray of the fuel injection valve is narrowed and also a spray condition is controlled so that the fuel spray comes unevenly in contact with an exhaust side portion of a valve head of an intake valve, in a high load region where the temperature of the internal combustion engine is high.
Claims28
A fuel injection control apparatus for an internal combustion engine comprising:
- a fuel injection valve disposed on an intake port on the upstream side of an intake valve of said internal combustion engine;
- a detector that detects operating conditions of said internal combustion engine;
- a spray condition changing apparatus for changing a spray condition of said fuel injection valve;
- and
- a control unit that controls said spray condition changing apparatus based on said operating conditions,
- wherein said detector detects an engine temperature and an engine load as the operating conditions of said internal combustion engine,
- wherein said spray condition changing apparatus is an apparatus for changing an angle of spray of said fuel injection valve, and
- wherein said control unit:
- controls said spray condition changing apparatus to narrow the angle of spray, when said engine temperature is equal to or less than a predetermined temperature;
- controls said spray condition changing apparatus to widen the angle of spray, when said engine temperature exceeds said predetermined temperature and also said engine load is equal to or less than a predetermined load;
- and
- controls said spray condition changing apparatus to narrow the angle of spray, when said engine temperature exceeds said predetermined temperature and also said engine load exceeds said predetermined load.
9 more elements
A fuel injection control apparatus for an internal combustion engine comprising:
- a fuel injection valve disposed on an intake port on the upstream side of an intake valve of said internal combustion engine;
- a detector that detects operating conditions of said internal combustion engine;
- a spray condition changing apparatus for changing a spray condition of said fuel injection valve;
- and
- a control unit that controls said spray condition changing apparatus based on said operating conditions,
- wherein said detector detects an engine temperature and an engine load as the operating conditions of said internal combustion engine,
- wherein said spray condition changing apparatus is an apparatus for changing the spray condition to a condition where the spray of said fuel injection valve comes unevenly in contact with an exhaust side portion of a valve head of said intake valve, and to a condition where the spray of said fuel injection valve comes in contact with the valve head without biasing toward the exhaust side, and
- wherein said control unit:
- controls said spray condition changing apparatus to change the spray condition to the condition where the spray of said fuel injection valve comes in contact with the valve head without biasing toward the exhaust side, when said engine temperature is equal to or less than a predetermined temperature;
- controls said spray condition changing apparatus to change the spray condition to the condition where the spray of said fuel injection valve comes in contact with the valve head without biasing toward the exhaust side, when said engine temperature exceeds said predetermined temperature and also said engine load is equal to or less than a predetermined load;
- and
- controls said spray condition changing apparatus to change the spray condition to the condition where the spray of said fuel injection valve comes unevenly in contact with an exhaust side portion of the valve head of said intake valve, when said engine temperature exceeds said predetermined temperature and also said engine load exceeds said predetermined load.
9 more elements
A fuel injection control method of controlling the fuel injection by a fuel injection valve disposed on an intake port on the upstream side of an intake valve of said internal combustion engine, comprising the steps of:
- detecting operating conditions of said internal combustion engine;
- and
- changing a spray condition of said fuel injection valve based on said operating conditions,
- wherein said step of detecting the operating conditions detects an engine temperature, and
- wherein said step of changing the spray condition narrows an angle of spray of said fuel injection valve, when said engine temperature is equal to or less than a predetermined temperature.
2 more elements
A fuel injection control method of controlling the fuel injection by a fuel injection valve disposed on an intake port on the upstream side of an intake valve of said internal combustion engine, comprising the steps of:
- detecting operating conditions of said internal combustion engine;
- and
- changing a spray condition of said fuel injection valve based on said operating conditions,
- wherein said step of detecting the operating conditions detects an engine temperature and an engine load, and
- wherein said step of changing the spray condition comprises the steps of:
- narrowing an angle of spray, when said engine temperature is equal to or less than a predetermined temperature;
- widening the angle of spray, when said engine temperature exceeds said predetermined temperature and also said engine load is equal to or less than a predetermined load;
- and
- narrowing the angle of spray, when said engine temperature exceeds said predetermined temperature and also said engine load exceeds said predetermined load.
6 more elements
A fuel injection control method of controlling the fuel injection by a fuel injection valve disposed on an intake port on the upstream side of an intake valve of said internal combustion engine, comprising the steps of:
- detecting operating conditions of said internal combustion engine;
- and
- changing a spray condition of said fuel injection valve based on said operating conditions,
- wherein said step of detecting the operating conditions detects an engine load, and
- wherein said step of changing the spray condition changes a spray direction to a direction where the spray of said fuel injection valve comes unevenly in contact with an exhaust side portion of a valve head of said intake valve, when said engine load exceeds a predetermined load.
2 more elements
A fuel injection control method of controlling the fuel injection by a fuel injection valve disposed on an intake port on the upstream side of an intake valve of said internal combustion engine, comprising the steps of:
- detecting operating conditions of said internal combustion engine;
- and
- changing a spray condition of said fuel injection valve based on said operating conditions,
- wherein said step of detecting the operating conditions detects an engine temperature and an engine load, and
- wherein said step of changing the spray condition comprises the steps of:
- controlling a spray direction to a direction where the spray of said fuel injection valve comes in contact with a valve head without biasing toward the exhaust side, when said engine temperature is equal to or less than a predetermined temperature;
- controlling said spray direction to the direction where the spray of said fuel injection valve comes in contact with the valve head without biasing toward the exhaust side, when said engine temperature exceeds said predetermined temperature and also said engine load is equal to or less than a predetermined load;
- and
- controlling said spray direction to a direction where the spray of said fuel injection valve comes in contact with an exhaust side portion of the valve head of said intake valve, when said engine temperature exceeds said predetermined temperature and also said engine load exceeds said predetermined load.
6 more elements
A fuel injection control apparatus for an internal combustion engine, comprising:
- a fuel injection valve disposed on an intake port on the upstream side of an intake valve of said internal combustion engine;
- and
- a drift generating apparatus for selectively biasing the intake air flow in said intake port, to change a direction of the fuel spray injected from said fuel injection valve;
- a detector detecting operation conditions of said internal combustion engine;
- and
- a control unit that controls said drift generating apparatus based on said operation conditions.
3 more elements
A fuel injection control method of controlling the fuel injection by a fuel injection valve disposed on an intake port on the upstream side of an intake valve of said internal combustion engine, comprising the steps of:
- detecting operating conditions of said internal combustion engine;
- and
- changing a spray condition of said fuel injection valve based on said operating conditions,
- wherein said step of detecting the operating conditions detects an engine temperature and an engine load, and
- wherein said step of changing the spray condition comprises the steps of:
- controlling a spray direction to a direction where the spray of said fuel injection valve comes in contact with a valve head of said intake valve without biasing toward the exhaust side, and also narrowing the angle of spray of said fuel injection valve, when said engine temperature is equal to or less than a predetermined temperature;
- controlling the spray direction to the direction where the spray of said fuel injection valve comes in contact with the valve head of said intake valve without biasing toward the exhaust side, and also widening the angle of spray of said fuel injection valve, when said engine temperature exceeds said predetermined temperature and also said engine load is equal to or less than a predetermined load;
- and
- controlling the spray direction to a direction where the spray of said fuel injection valve comes in contact with an exhaust side portion of the valve head of said intake valve, and also narrowing the angle of spray of said fuel injection valve, when said engine temperature exceeds said predetermined temperature and also said engine load exceeds said predetermined load.
6 more elements
A fuel injection valve for an internal combustion engine, comprising:
- a valve body;
- a valve seat on which said valve body is seated;
- a deforming member deforming itself to deform a fuel passage on the downstream side of said valve seat;
- and
- a heater heating said deforming member.
2 more elements
A fuel injection control apparatus for an internal combustion engine comprising:
- a fuel injection valve disposed on an intake port on the upstream side of an intake valve of said internal combustion engine;
- a detector that detects operating conditions of said internal combustion engine;
- a spray condition changing apparatus for changing a spray condition of said fuel injection valve;
- and
- a control unit that controls said spray condition changing apparatus based on said operating conditions,
- wherein said detector detects an engine temperature as the operating condition of said internal combustion engine,
- said spray condition changing apparatus is an apparatus for changing an angle of spray of said fuel injection valve, and
- said control unit controls said spray condition changing apparatus to narrow the angle of spray, when said engine temperature is equal to or less than a predetermined temperature.
5 more elements
A fuel injection control apparatus for an internal combustion engine comprising:
- a fuel injection valve disposed on an intake port on the upstream side of an intake valve of said internal combustion engine;
- a detector that detects operating conditions of said internal combustion engine;
- a spray condition changing apparatus for changing a spray condition of said fuel injection valve;
- and
- a control unit that controls said spray condition changing apparatus based on said operating conditions,
- wherein said detector detects an engine load as the operating condition of said internal combustion engine,
- wherein said spray condition changing apparatus is an apparatus for changing the spray condition to a condition where the spray of said fuel injection valve comes unevenly in contact with an exhaust side portion of a valve head of said intake valve, and to a condition where the spray of said fuel injection valve comes in contact with the valve head without biasing toward the exhaust side, and
- wherein said control unit controls said spray condition changing apparatus to let the spray of said fuel injection valve to unevenly come in contact with the exhaust side portion of the valve head of said intake valve, when said engine load exceeds a predetermined load.
5 more elements
A fuel injection control apparatus for an internal combustion engine comprising:
- a fuel injection valve disposed on an intake port on the upstream side of an intake valve of said internal combustion engine;
- a detector that detects operating conditions of said internal combustion engine;
- a spray condition changing apparatus for changing a spray condition of said fuel injection valve;
- and
- a control unit that controls said spray condition changing apparatus based on said operating conditions,
- wherein said detector detects an engine temperature and an engine load as the operating conditions of said internal combustion engine,
- wherein said spray condition changing apparatus comprises:
- an angle of spray changing apparatus for changing an angle of spray of said fuel injection valve;
- and
- a spray direction changing apparatus for changing the spray condition to a condition where the spray of said fuel injection valve comes unevenly in contact with an exhaust side portion of a valve head of said intake valve, and to a condition where the spray of said fuel injection valve comes in contact with the valve head without biasing toward the exhaust side, and
- wherein said control unit:
- controls said spray direction changing apparatus to change the spray condition to the condition where the spray of said fuel injection valve comes in contact with the valve head without biasing toward the exhaust side, and also controls said spray angle changing apparatus to narrow the angle of spray, when said engine temperature is equal to or less than a predetermined temperature;
- controls said spray direction changing apparatus to change the spray condition to the condition where the spray of said fuel injection valve comes in contact with the valve head without biasing toward the exhaust side, and also controls said spray angle changing apparatus to widen the angle of spray, when said engine temperature exceeds said predetermined temperature and also said engine load is equal to or less than a predetermined load;
- and
- controls said spray direction changing apparatus to change the spray condition to the condition where the spray of said fuel injection valve comes unevenly in contact with an exhaust side portion of the valve head of said intake valve, and also controls said spray angle changing apparatus to narrow the angle of spray, when said engine temperature exceeds said predetermined temperature and also said engine load exceeds said predetermined load.
12 more elements
Dependencies are inferred from the claim text.