Patent
Two-cycle internal combustion engine
Norihiko Toyota Jidosha Kabushiki Kaisha Nakamura,Toshio Tanahashi,Michiaki Ujihashi,Hiroshi Noguchi,Toshio Itoh,Katsuhiko Hirose,Kingo Horii,Toyokazu Baika +7 more
TLDR
A two-cycle internal combustion engine comprises a cylinder head having an intake port and exhaust port opened to a combustion chamber, to which compressed fresh air is introduced via an intake valve.Abstract:
A two-cycle internal combustion engine comprises a cylinder head having an intake port and exhaust port opened to a combustion chamber, to which compressed fresh air is introduced via an intake valve. The intake and exhaust valves are operated in response to a crank angle. A pulsation pressure of exhaust gas in the exhaust port is substantially restrained during an idling or light load running condition. The exhaust valve is opened earlier than the intake valve when the speed of the downward movement of the piston is relatively high, such that a part of exhaust gas in the exhaust port flows back to the combustion chamber in that condition. An exhaust gas swirl rotating around a cylinder axis is formed when the exhaust gas flows back and the fresh air is slowly introduced onto the exhaust gas swirl in that condition.read more
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Patent
Fuel injection control system for a two-cycle engine
TL;DR: In this paper, a solenoid operated valve controls the pressure of fuel supplied to a fuel injector, which is determined in accordance with the engine operating conditions and a driver is provided for operating the valve for setting the fuel pressure.
Patent
Two-stroke engine
Toshio C,O Toyota Jidosha K. K. Tanahashi,Norihiko C,O Toyota Jidosha K. K. Nakamura,Hiroshi C,O Toyota Jidosha K. K. Noguchi,Kenichi C,O Toyota Jidosha K. K. Nomura,Toyokazu C,O Toyota Jidosha K. K. Baika,Masanobu C,O Toyota Jidosha K. K. Kanamaru,Tatsuo C,O Toyota Jidosha K. K. Kobayashi,Hideo C,O Toyota Jidosha K. K. Nagaosa,Kazuhiro C,O Toyota Jidosha K. K. Ito,Kouichi C,O Toyota Jidosha K. K. Nakae +19 more
TL;DR: A two-stroke engine with an intake valve and an exhaust valve arranged on an inner wall of the cylinder head, an intake passage connected to the cylinder via the intake valve, and a fuel injection device arranged in the cylinder, for injecting fuel into the cylinder is described in this article.
Patent
Valve Selection For An Engine Operating In A Multi-Stroke Cylinder Mode
TL;DR: In this paper, a method to control valve patterns in a cylinder operating in a multi-stroke cylinder mode was proposed to improve drivability and emissions of a single-stroke engine.
Patent
Method of Torque Control for an Engine with Valves that may be Deactivated
TL;DR: In this paper, a method to determine and control engine torque in an internal combustion engine was proposed, which may significantly reduce torque strategy calculations and the calibration complexity, and may also reduce the cost of calibration.
Patent
Multi-stroke cylinder operation in an internal combustion engine
TL;DR: In this article, a method to control valves during multi-stroke cylinder operation was proposed to improve emissions and engine torque resolution in a multi-cylinder engine with a multiscale manifold.
References
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Patent
Variable valve timing system for induction control of an internal combustion engine
TL;DR: In this paper, a variable valve timing system for an internal combustion engine was proposed, which cyclically opens and closes a port providing fluid communication between a combustion chamber and a conduit leading to the manifold and delays the closure of the port in response to a signal indicative of the power output required of the engine.
Patent
Crank chamber compression-type two-cycle engine
TL;DR: In this paper, a two-cycle engine with a crank chamber and a combustion chamber is described, where an intake passage is communicated with the interior of a cylinder through an intake port which is opened and closed by a piston disposed in the cylinder for reciprocal motion therein.
Patent
Internal combustion engine with two intake valves
TL;DR: In this paper, an internal combustion engine provided with a first port of a helical shape and second port of straight shape opened to the combustion chamber is described, where an intake control valve selectively opens or closes the second intake port in accordance with operating conditions of the engine.
Patent
Intake system for diesel cycle engines
TL;DR: A diesel engine intake system including a timing valve, which is positioned in the intake system in engine starting and warming-up period under a cold engine condition, is described in this article, where a strong suction pressure is produced in the combustion chamber before the timing valve is opened.
Patent
Method and apparatus for a low emission diesel engine
Ray G. McIntire,Douglas Colvette +1 more
TL;DR: In this paper, an improved method and apparatus four operating a high-speed four cycle compression ignition engine cause the amount of NOx in the exhaust gases to be reduced substantially, and the improvement comprising timing the opening of the intake valve and the closing of the exhaust valve so that no fresh working fluid is permitted to pass out the exhaust.