摘要:
A process and apparatus are disclosed for improving the efficiency of combustion in a spark ignition four cycle internal combustion piston engine. After a fuel-air charge is inducted into the cylinder(s), gas is injected at moderate pressure into the cylinder at a level below the spark plug, while the pressure in the cylinder is low. Preferred gas injection timing is from about the time the piston completes the intake stroke until the piston is about half-way through its compression stroke. Air and/or engine exhaust may comprise the injected gases. Valves and conduit for controlling the injection are provided as a sub-assembly which can be fitted to existing engines and use the engine camshaft for correct actuation.
摘要:
Method and means for regulating the pollutants discharged from an internal combustion engine by regulating the flow of a portion of the exhaust gases from the exhaust manifold to the intake manifold by controlling a reed valve to precisely meter the flow of exhaust gases and/or ambient air in response to atmospheric pressure, intake manifold pressure and exhaust manifold pressure.
摘要:
Methods and systems are provided for adjusting a throttle based on an intake oxygen sensor output. In one example, a method may include adjusting a position of a throttle based on a dilution threshold and a total aircharge dilution level, the total dilution aircharge level based on an output of an intake oxygen sensor. Additionally, spark timing may be adjusted based on the total aircharge dilution level.
摘要:
A straight port and a swirl port supply low-oxygen-concentration gas and high-oxygen-concentration gas into a combustion chamber of an engine such that high-level-oxygen-concentration gas and low-level-oxygen-concentration gas are formed from the high-oxygen-concentration gas and the low-oxygen-concentration gas in an adjacent region of the combustion chamber, which is adjacent to a fuel mist injected from an injection hole of a fuel injection valve. The high-level-oxygen-concentration gas is located in a corresponding area of the adjacent region, which is generally opposite from the fuel injection hole, and the low-level-oxygen-concentration gas is located in a remaining area of the adjacent region, which is other than the corresponding area of the adjacent region.
摘要:
An internal combustion engine in which a compact ring type boiler pack is installed around each cylinder under the cylinder head. Water is pumped through each boiler at a rate proportional to the cylinder temperature, to maintain a proper cooling and steam injection balance, the generated steam being injected peripherally into the cylinder in pulses, timed by a valve which is controlled by movement of the inlet valve actuating mechanism of the particular cylinder. The boiler has multiple stages to ensure complete conversion of the water to steam, the peripheral steam injection providing internal cooling of the cylinder walls without interfering with normal combustion. The steam system is adaptable to existing internal combustion engines and results in reduced fuel consumption, very low pollutant emissions in the exhaust and a very efficient thermal cycle.
摘要:
Provided herein is an optimizable hydrogen generation system for producing and injecting hydrogen gas as a fuel supplement into the air intake of internal combustion and/or diesel engines. Hydrogen gas (H2) and oxygen gas (O2) are produced with one or more pairs of cells to adjust the amount of hydrogen gas supplied to the engine, while the oxygen gas is vented to the atmosphere.
摘要:
A control device predicts whether temporary reduction occurs to a charging efficiency of fresh air in an in-cylinder gas by an influence of an EGR rate of the in-cylinder gas, which increases later than increase of a charging efficiency of the in-cylinder gas, if a first arithmetic operation is applied to calculating a target throttle opening degree based on a target charging efficiency which is increasing, in a case of shifting to an acceleration operation, by using a prediction model expressing dynamic characteristics of an internal combustion engine. When it is predicted that temporary reduction occurs to the charging efficiency of the fresh air, the control device calculates the target throttle opening degree by a second arithmetic operation by which an increase speed of a throttle opening degree is restrained more than by the first arithmetic operation, instead of calculating the target throttle opening degree by the first arithmetic operation.
摘要:
An engine monitoring system and/or emission reduction system is provided for use in conjunction with an internal combustion engine. The system includes a plurality of sensors which detect various engine operating conditions and in which each sensor generates an output signal representative of its particular engine operating condition. At least one of these sensors is a gas sensor associated with the exhaust system which produces an output signal indicative of the concentration of nitric oxides in the exhaust emissions and which has an output which varies as a function of the concentration of such nitric oxides. A central processing unit receives inputs from the various engine sensors and, in accordance with preprogrammed algorithms, monitors the engine for failure and/or deterioration of various components in the emission reduction system as well as the various engine sensors. The processing unit further generates output signals which controls the operation of various engine components to optimize the operating condition of the engine as well as to meet governmental standards relating to engine emissions.
摘要:
The invention provides a method of, and apparatus for, controlling the fuel to air ratio of the fuel mixture to an internal combustion engine which includes a fuel mixture feed system having a known type of carburettor. In the method the fuel mixture is supplemented with air and exhaust gas by utilizing pressure controlled air and exhaust gas valves operated by pressure changes in the fuel feed system and/or intake manifold of the engine so that the valves open when the fuel to air ratio of the fuel mixture supplied by the carburettor is in excess of a predetermined value.
摘要:
An internal combustion engine includes a direct injection valve that directly inject gaseous fuel from an injection hole into a cylinder by separating a needle from a seat, and a blow-by gas treating device that recirculates blow-by gas from a crankcase to an intake passage. The control device executes a suction process of suctioning gas in the cylinder into an injection hole of the direct injection valve when the blow-by gas is being recirculated by the blow-by gas processing device.