A fuel delivery pipe capable of reducing a pressure pulsation when fuel is injected from an injection nozzle, preventing vibration and noise from under-floor piping, and reducing radiant sound from a fuel delivery body, wherein a flexible absorbing wall surface (10) installed on the wall surface of the fuel delivery body (1) is deformed by a variation in internal pressure to increase the inside volume of the fuel delivery body (1), αL/√V determined by the sound velocity αL of the fuel flowing through the fuel delivery body (1) and the inside volume V of the fuel delivery body (1) is 20 x 103 (m-0.5·sec-1) ≤ αL/√V ≤ 85 x 103 (m-0.5·sec-1) and the ratio αL/αH of the sound velocity αL of the fuel to an equivalent sound velocity αH in a high frequency area is αL/αH ≤ 0.7, and the sectional shape of the fuel delivery body (1) in a direction perpendicular to the axis thereof is formed in a generally mortar shape, generally flask shape, generally trapezoidal shape, generally key shape, or generally goggle shape.

Fuel delivery pipe

PROBLEM TO BE SOLVED: To obtain a variable valve gear with small arrangement space by dividing and forming one tip part side and the other tip part side of a rocker arm and making both the divided arm parts detachable according to an engine operation state, in a variable mechanism in which an oscillating fulcrum of the locker arm is made variable and lift amount of an engine valve is made variable. SOLUTION: When a vehicle is started and the vehicle is transferred to stationary operations of low revolution low load and medium revolution and medium load, an electromagnetic switching valve is switched, high pressure oil from an oil pump is supplied to a pressure receiving chamber 43 and a connecting pin 41 is advanced and moved against a coil spring 42 at a location where a hole for operation 38 and a hole for sliding 40 are matched in a base circle area of an oscillating cam in each independent oscillating locus of both divided arm parts 35, 36 constituting a rocker arm 18. As a result, both the divided arm parts 35, 36 are linked each other via the connecting pin 41. As a result, the whole of the rocker arm 18 is oscillated in a cooperation with a driving cam, two intake valves are operated, intake filling efficiency is enhanced and an output improvement is contrived. COPYRIGHT: (C)2000,JPO

Variable valve gear of internal combustion engine

The present invention provides a gear mechanism of a power transmitting system, which includes a crank gear operatively coupled with a crankshaft, and a first driven gear (31) that is coupled with a first balance shaft (30) via a damping mechanism (54) that allows relative rotation between the driven gear and the balance shaft. The damping mechanism includes a friction damper (54a, 54b) that generates frictional force when the first driven gear and a counter gear fixed to the first balance shaft rotate relative to each other within a predetermined rotational phase range or angle, and a stopper rubber or rubbers (55a, 55b) that elastically deforms to generate elastic force when the first driven gear and the first balance shaft rotate relative to each other beyond the predetermined rotational angle.

Gear mechanism of power transmitting system

A method of controlling a fuel injection device that can control a small amount of injection is provided. A fuel injection device for use in an internal combustion engine, includes: a valve body that can open and close a fuel passage, a needle that transfers a force with the valve body, and executes valve opening/closing operation, and an electromagnet that includes a coil and a magnetic core provided as a driver for driving the needle, and a cylindrical nozzle holder disposed on an outer periphery of the magnetic core and the needle, in which a current is supplied to the coil to exert a magnetic attractive force between the magnetic core and the needle to open the valve body.

Fuel injection device

An open-close characteristic of an intake valve is controlled so that a target intake air amount for an engine can be obtained, and also a retarded angle limitation of closing timing of an exhaust valve is set based on opening timing of the intake valve, to control an open-close characteristic of the exhaust valve so that the closing timing of the exhaust valve becomes a more advance angle side than the retarded angle limitation.

Variable valve control apparatus for internal combustion engine and method thereof

PROBLEM TO BE SOLVED: To reduce radiation of an abnormal sound caused by the realization of high pressure of fuel control pressure, and to prevent fuel leakage by absorbing core dislocation of branch pipes and an injector SOLUTION: In a fuel distribution pipe 1 having a pipe body 2 and two or more of branch pipes 3 for inserting/connecting an injector 10, a bellows structure part 9 for showing pipe axis directional and pipe diameter directional elasticity is arranged between a base end part 7 close to the pipe body 2 of the branch pipes 3 and a tip part 8 for inserting/connecting the injector 10 The bellows structure part 9 is covered with a cylindrical wire net body 16 to restrain pipe axis directional expansive deformation of the bellows structure part 9 by fuel control pressure, and is fixed to the branch pipes 3 on both sides of the cylindrical wire net body 16 A filter noise eliminator 20 is arranged inside the branch pipes 3

Fuel distribution pipe

PROBLEM TO BE SOLVED: To reduce pumping loss by controlling an amount of intake air into a cylinder using a variable valve system with a simple structure, and to improve fuel consumption and stabilize idling operation by combining the variable valve system and a throttle valve for increasing lean limit. SOLUTION: A solid cam 27 for driving an intake valve is provided with continuously changing at least a lifting amount of a cam profile in the axial direction from idling operation to full load operation through light load operation and high load rotation range. The solid cam 27 is displaced in the axial direction with being connected with a pedaling amount of an accelerator pedal to change at least the lifting amount of the intake valve 21 with being connected with the pedaling amount of the accelerator pedal and also change the opening of the throttle valve 8 with being connected with the pedaling amount of the accelerator pedal, and by combining these changes, the amount of the intake air into the cylinder is controlled.

Method and device for controlling amount of intake air for ignition type internal combustion engine

PROBLEM TO BE SOLVED: To provide a compressor housing for a supercharger, which is excellent in productivity and capable of reducing cost and improving performance.SOLUTION: A compressor housing 1 for a supercharger includes an air-intake port 11 for sucking air toward an impeller 5; and a discharge scroll chamber 12 for leading the air discharged from the impeller 5 to the outside. The compressor housing further includes: a scroll piece 2 that includes an air-intake port forming part 21, a scroll wall surface forming part 22 and a scroll outer peripheral part 23; a shroud piece 3 that includes a shroud press-fitting part 31 and a shroud wall surface forming part 32; and an outer peripheral wall piece 4 that includes an outer peripheral annular press-fitting part 41 and an outer peripheral annular wall surface forming part 42. The outer peripheral wall piece 4 has a shape in which the size in an axial direction of the outer peripheral annular wall surface forming part 42 gradually gets bigger along a circumferential direction.

Compressor housing for supercharger

PROBLEM TO BE SOLVED: To provide a compressor for a supercharger, capable of improving supercharging efficiency in any of a low-speed rotation area and a high-speed rotation area of an engine and the like, with the compressor in a simple mechanical constitution using an airflow taken into an intake port. SOLUTION: This compressor 1 for a supercharger is constituted to rotatably house an impeller 4 having a plurality of blades 42 in a housing 10, and compressing and exhausting air A1 taken from an intake port 211 of the housing 10 through the rotation of the impeller 4. A plurality of air inlet guide blades 53 for converting the flow of the air A1 taken from the intake port 211 into a swirl flow in the same direction as a rotation direction of the impeller 4 fixed to an outer peripheral portion in the intake port 211. A flow rate automatic valve 6 which is constituted to be opened with the flow of the air A1 into the intake port 211 and make the air A1 pass through is provided on the centers of a plurality of the air intake inlet guide blades 53. COPYRIGHT: (C)2010,JPO&INPIT

Compressor for supercharger

PROBLEM TO BE SOLVED: To provide a balance shaft device provided with a damper device having excellent workability. SOLUTION: A damper device 30 is located between the first gear 11 of a first shaft 10 and a drive gear 12. The damper device comprises a first spring holder 31 which is fixed at the first gear and at which four first spring stoppers are fixed; a second spring holders 35 to fix four second spring stopper approximately in the same position; a ring holder 41 to hold the two members 31 and 35: and four springs 43. When the first and second spring holders are concentrically rotated relatively, the first and second spring stoppers are arranged in a manner to prevent the occurrence of mutual interference to each other.

勝彦本杉

Papers

Fuel distribution pipe

Method and device for controlling amount of intake air for ignition type internal combustion engine

Compressor housing for supercharger

Compressor for supercharger

Balance shaft device

勝彦 本杉

Papers

Fuel distribution pipe

Method and device for controlling amount of intake air for ignition type internal combustion engine

Compressor housing for supercharger

Compressor for supercharger

Balance shaft device

勝彦本杉