Honda Giken Kogyo Kabushiki Kaisha

Osamu Kubota

Kazuo Inoue

Etsuo Noda

Masatoshi Suzuki

Tsuneo Endoh

Noriyuki Kishi

Shunji Yano

Tsuneo Endo

Takashi Komura

Koji Yamaguchi

Atsushi Katoh

Ryo Narisawa

Fusao Tateishi

Isao Terabe

An improved gas generator apparatus having a compressor, a combustor, and a turbine having a turbine rotor coupled by a rotor shaft to the compressor rotor of the compressor. The combustor is spiral shaped and positioned between the compressor and turbine which allows the direction of flow of air or working gas to remain substantially unchanged from the compressor to the turbine, while maintaining a compact configuration. In operation, air drawn into the compressor is swirled circumferentially and pressurized by the compressor, and then delivered into a combustion chamber while it is being swirled. Air is expanded in the combustion chamber as it is swirled in and along the spirally shaped expansion chamber tube and then flows as a working gas into the turbine in which the gas drives the turbine rotor while the gas is still being swirled in the same direction. The air or working gas, therefore, maintains a swirling flow in one direction from the compressor to the turbine. In one embodiment, the scrolls for the compressor and turbine a compactly located in a normally empty space surrounding the shroud for the rotors of the compressor and turbine. In another embodiment, the separate compressor shroud is eliminated by providing a casing surrounding the spiral combustion expansion tube for receiving compressed air directly into that casing.

Gas generating apparatus

A contrarotating propeller type propulsion system having first and second output rotary cylinders which are carried individually on an outside support cylinder fixedly secured to a first support structure, the first output rotary cylinder being borne on the outer peripheral surface of the first support cylinder through bearings and the second output rotary cylinder borne on the inner peripheral surface of the first support cylinder through bearings. The first and second output rotary cylinders serve to support the first and second contrarotating propellers, respectively. The first and second output rotary cylinders are supported on the first support cylinder at two axially spaced points. The driving shaft is borne on a second support cylinder fixedly secured to the support structure and surrounded by the first support cylinder. The gear reduction mechanism for causing the counter rotation of the propellers is provided within a case that is cooled and lubricated by oil flowing therethrough and also is cooled by an annular air passage around the entire exterior of the case.

Contrarotating propeller type propulsion system

Disclosed is a turbine comprising a turbine wheel, a turbine scroll passage defined in a turbine casing around the turbine wheel for introduction of gas to the turbine wheel, and an axial central passage defined in the turbine casing for ejection of gas from the turbine wheel, wherein: a plurality of variable nozzles are arranged outside of a throat section having a locally minimum cross section which is defined in the turbine casing around the turbine wheel. The variable nozzles may be defined by fixed vanes and moveable vanes which cooperate with each other in such a manner that each of the moveable vanes and the corresponding fixed vane define a substantially smooth and continuous airfoil. The moveable vanes may be pivotally supported by a back plate of the casing while the fixed vanes may be integrally provided with a fixed vane member having a disk portion which defines a surface opposing the inner surface of the back plate. The moveable vanes may rotate along and between these mutually opposing surfaces for varying the cross section of the nozzles defined between the fixed vanes and the moveable vanes.

Variable capacity turbine

The boost pressure of a blower such as a turbocharger or a supercharger which is driven by the exhaust gas or the power output from an engine is controlled under closed-loop control when the boost pressure is in a steady state, and under open-loop control when the boost pressure is in a transient state. When the boost pressure is in the transient state, the open-loop control which may be map control is carried out for relatively good accuracy and high stability. When the boost pressure is in the steady state, the closed-loop control, i.e., highly accurate feedback control, is effected. Therefore, an improved response and stability can be achieved in boost pressure control.

Boost pressure control method for a supercharged internal combustion

A turbo-supercharger is provided for internal combustion engines which comprises a turbine disposed at an intermediate portion of an exhaust passage for the engine, and which is driven by a gas flowing therein. A compressor is disposed at an intermediate portion of a suction passage for the engine and is driven by said turbine. Also, a pre-chamber is disposed at that portion of the suction passage which is on the downstream side of the compressor, and is characterized by a resonance chamber which is communicated with the suction passage via a branch passage. The branch passage can be connected to the suction passage between the pre-chamber and the compressor, between the throttle valve and a fuel injection nozzle, on the upstream side of the compressor or directly at the pre-chamber.

Turbo-supercharger for internal combustion engine

Growing community of inventors

Saitama, Japan

Osamu Kubota