摘要:
An internal combustion engine (100) having a combustion chamber (102) and a fuel delivery system (106) for delivering fuel into the combustion chamber (102). The fuel delivery system (106) includes a fuel entry (116) proximate the combustion chamber (102), a combustion compression wave reflection conduit (112) connected to the combustion chamber (102) proximate the fuel entry (116), and a movable member (114) located proximate the reflection conduit (112) for at least partially opening and closing a path (120) through the reflection conduit (112).
摘要:
Multiple intake valves operatively associated in a common combustion chamber are advantageous in that the design achieves high output for an internal combustion engine. The subject modified cylinder head utilizes the advantages available in a multiple intake valve system, but further enhances the design by reducing heat rejection. In the subject modified cylinder head, three intake valves (38, 40, 42) having corresponding intake valve ports (26, 28, 30) and one exhaust valve (68) having an exhaust valve port (66) are operatively associated in a common combustion chamber. A reduction in heat rejection is achieved through a relationship between the cross-sectional areas of the intake and exhaust valve ports (26, 28, 30, 66). The intake valve ports (26, 28, 30) are constructed so that their cross-sectional area is larger than about 69 % of the combined cross-sectional area of the intake and the exhaust ports (26, 28, 30, 66).
摘要:
A uniflow-scavenging-type two-cycle engine according to the present invention includes: a cylinder (110) in which a combustion chamber is formed; a piston that slides in the cylinder; a scavenging port (122) that is provided at one end of the cylinder in a stroke direction of the piston and draws in an active gas into the combustion chamber in accordance with a sliding movement of the piston; a fuel injection section (126) that is provided in the scavenging port on an outer side of the cylinder than a center of a width of the scavenging port in a penetration direction and injects a fuel gas to the active gas drawn in into the scavenging port.
摘要:
To improve engine performance, fuel consumption performance, and emission performance in a high-load operation in a well-balanced manner. To provide a fuel property detecting unit that detects an ignitability index Pc and a volatility index Pv respectively found through indexation of an ignitability and a volatility of fuel including at least two types of fuels F1 and F2 with different properties in a combustion chamber CC, a combustion mode setting unit that sets a combustion mode to a stoichiometric compression auto-ignition diffusion combustion mode when the ignitability index Pc and the volatility index Pv are respectively equal to or higher than an ignitability determination reference value Pc1 and a volatility determination reference value Pv1 satisfying a good ignitability and a good volatility suitable for the stoichiometric compression auto-ignition diffusion combustion mode, and an operation condition is of high-load, and a combustion control execution unit that causes an operation in the combustion mode set by the combustion mode setting unit.
摘要:
In a small-type vehicle including a cylinder head possessed by an engine main body mounted on a vehicle body frame, an intake passage portion extending rectilinearly so as to guide cleaned air from an air cleaner disposed on the upper side of the cylinder head, the intake passage portion being connected to an upper portion side wall of the cylinder head, an injector for injecting a fuel into the intake passage portion from the upper side, the injector being attached to the air cleaner, and a fuel tank so disposed as to cover a rear portion and an upper portion of the air cleaner, to make it possible to secure a sufficient capacity of the fuel tank. In the invention, the injector 100 is disposed on the front side relative the center line C1 of the intake passage portion 92.
摘要:
A side valve internal combustion engine provided with at least one combustion cylinder (2) having a piston (1). At least two intake valves (17') and at least one exhaust valve (15') are provided for each of the combustion cylinders. In order to maintain a compact engine and provide a nozzle-type combustion chamber (23), the intake valves and exhaust valve are located to one side of the combustion chamber in the engine block. The exhaust valve is further located at a greater distance from the combustion cylinder than the intake valves in order to decrease heat distribution on the cylinder walls. The nozzle-type chamber provides for efficient flow of gases within the engine.
摘要:
The present invention concerns a device for fuel injection intended for an internal combustion engine with a wide range of speeds of revolution and with high requirements for rapid response such as, for example, the engine in a motor cycle, and a method of controlling fuel injection to such an engine. In the invention according to the present application the fuel injection to an internal combustion engine comprising an intake pipe (1) with at least one intake valve (2) and one or more injectors is controlled in such a manner that a first fuel injection in order to obtain a well prepared air/fuel mixture occurs early in the working cycle of the engine following the closure of the intake valve and a second fuel injection in order to obtain an optimal amount of fuel for the cycle, a process known as 'transient compensation', occurs late in the working cycle before closure of the intake valve.