Patent
Method for the operation of an internal combustion engine with afterburner chamber and installation for carrying out the method
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TLDR
In this paper, a method and apparatus for operating a four-cycle internal combustion engine, used for driving a vehicle, in which the beginning of the opening of the exhaust valve is advanced, from a middle rotational or load range of the engine, with a decreasing rotational speed and/or decreasing load, is presented.Abstract:
A method and apparatus for operating a four-cycle internal combustion engine, used for driving a vehicle, in which the beginning of the opening of the exhaust valve is advanced, from a middle rotational or load range of the engine, with a decreasing rotational speed and/or decreasing load of the engine.read more
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Patent
Four-cycle internal combustion engine and valve timing control method thereof
TL;DR: In this paper, a valve timing of an exhaust valve of a four-cycle internal combustion engine is set so that the closing time of the exhaust valve advances before a top dead center of a piston of the engine.
Patent
Intake and exhaust control apparatus for internal combustion engines
Hitomi Mitsuo,Junsou Sasaki +1 more
TL;DR: In this paper, the valve overlap, when the engine operates under medium or moderate engine speeds, is varied so as to be larger or longer under medium engine loads than under higher or heavier and lower or lighter engine loads.
Patent
Secondary air supply system for internal combustion engines
TL;DR: In this paper, a non-return air flow system for supplying secondary air into the exhaust system of internal combustion engines by utilizing pulsating flow of exhaust gases in the exhaust systems, wherein the critical valve opening pressure for a check valve incorporated in the nonreturn system is varied in accordance with intake air flow rate of the engine so that supply of secondary air is effected in proportion to air intake of an engine.
Patent
Secondary air supply system for internal combustion engines
TL;DR: In this article, an improved and easily adaptable system to provide secondary air for an internal combustion engine, including a single-cylinder engine unit having (i) a closed crankcase capable of experiencing pressure pulsations produced by the reciprocating motion of a piston in a cylinder, (ii) a crankcase breather system including a breather assembly attached to a chamber integrally formed with the engine block, or, in the case of a two-cycle engine, an intake reed plate attached to the intake port of the engine, and (iii) an exhaust system
Patent
Secondary air supply system for internal combustion engine
TL;DR: A secondary air supply system for an internal combustion engine, including single and multiple-cylinder engines, is described in this article, where an actuator plate (9) and a diaphragm air pump (3) are installed between the engine and the engine block.
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Method and apparatus for reducing exhaust emissions and improving fuel utilization in internal combustion engines
Phillip S. Myers,Otto A. Uyehara +1 more
TL;DR: In this article, a method for providing a stratified charge of two constituents in the combustion chamber of an internal combustion engine when the engine is operated at less than full load to reduce all three undesirable exhaust emissions, i.e., hydrocarbons, carbon monoxide and oxides of nitrogen.
Patent
Damped automatic variable valve timing device for internal combustion engines
TL;DR: In this paper, a variable drive for the camshaft of an internal combustion engine is described, the variation being responsive to changes in load and rpm of the engine while the engine is running and being completely automatic.