Honda Giken Kogyo Kabushiki Kaisha

Honda Motor Co., Ltd.

Kensuke Honma

Tsuneo Endoh

Tsutomu Takahashi

Tsuyoshi Baba

Haruhiko Komatsu

Ryuji Sano

Hiroyuki Horimura

Kenji Matsumoto

Yasunari Kimura

Yasunobu Kawakami

Masahiko Minemi

Atsushi Murakami

Naoki Itoh

Hiroshi Ichikawa

Kenji Okamoto

Masao Ichikawa

Hiroyoshi Taniguchi

Hiroyuki Niikura

Shiro Kokubu

Toshihiro Tsutsui

Hiroshi Mahira

Naoki Ohta

Kazuhisa Maeda

Tadahisa Masatani

Yuichiro Tajima

A catalyst converter having a retaining mat with a thickness wherein the apparent density during assembling becomes 0.25 g/cmor more and less than 0.51 g/cmand the outside diameter Dof a catalyst retainer is set according to interference of the retaining mat in passing through a press-in tool and interference of the retaining mat after being pressed into a retaining tube. The retaining mat is formed of a non-expandable inorganic fiber sheet. A pressing force moves the catalyst retainer in the axial direction with respect to the retaining tube while the catalyst converter device is used with the length Lalong the longitudinal direction of the catalyst retainer in the retaining mat wound around the catalyst retainer being set longer than the winding diameter Dof the retaining mat around the catalyst retainer so that a retaining force R greater than the pressing force F can be secured.

Catalyst converter device for purifying exhaust gas and saddle-ride type vehicle

An exhaust muffler device has a ceramic catalyst body, and a holding tube having an end portion configured to hold the ceramic catalyst body therein with a holding mat therebetween. The end portion is reduced in diameter to form a reduced diameter portion. An exhaust pipe is connected to the holding tube, with a downstream end portion thereof being fitted to an inner circumference of the reduced diameter portion of the holding tube. An inner circumferential surface of the downstream end portion of the exhaust pipe is in proximity to a boundary portion of the holding mat and the ceramic catalyst body.

Exhaust muffler device

Pistons () are slidably received in a plurality of cylinders () disposed radially in a rotor (), and a plurality of vanes () cooperating with the pistons () are disposed radially in the rotor (), so that a vane chamber () is defined between a pair of the adjacent vanes (). The radial movements of each of the pistons () and each of the vanes () are substantially stopped, so that the volumes of each of the cylinders () and each of the vane chambers () are not changed, for a period from the end of an exhaust stroke at which a gas-phase working medium is discharged from the cylinder () and the vane chamber () to the start of an intake stroke at which the supplying of the gas-phase working medium is started. Thus, it is possible to prevent the generation of a water hammer phenomenon due to a liquid-phase working medium confined in the cylinder () and the vane chamber ().

Rotary fluid machinery

A Rankine cycle system is provided in which, with regard to a given relationship between the pressure (Pevp) and the temperature (Tevp) of a vapor that is taken into an expander () that includes a cylinder chamber in a first stage and a vane chamber in a second stage, the chambers being disposed in line, the expansion ratio of the vapor that the expander () takes in and discharges is set at a predetermined expansion ratio (&#x3b5;) according to the given relationship so that the pressure (Pexp) and the temperature (Texp) of the vapor that is discharged from the expander () coincide with target values, thereby making the expander () and the condenser () exhibit maximum performance. Since the vapor within the cylinder chamber in the first stage is in a superheated vapor region and contains no water, the phenomenon of water hammer will not be caused in the cylinder chamber. Furthermore, since the vapor at the exit of the vane chamber is in a saturated vapor region and contains water, the vane chamber can be lubricated and sealed by means of the water.

Rankine cycle device

An outer periphery of an output shaft integral with a rotor of an expander of a vane-type operated by a high-pressure vapor is supported at its opposite ends by a static-pressure bearing mounted at one end thereof in a floated state provided by a liquid film of a pressurized liquid-phase fluid supplied from a pressurized liquid-phase fluid feed bore through a pressurized liquid-phase fluid passage, and by a static-pressure bearing mounted at the other end thereof in a floated state provided by a liquid film of a pressurized liquid-phase fluid supplied from a pressurized liquid-phase fluid feed bore through pressurized liquid-phase fluid passages. Vanes supported radially in the rotor for reciprocal movement are supported in floated states by a liquid film of a pressurized liquid-phase fluid supplied through pressurized liquid-phase fluid passages extending radially outwards within the rotor.

In a rotary fluid machine for converting the reciprocal movement of pistons and the rotational movement of a rotor from one into another by the engagement of rollers and annular grooves with each other, a value in a positive peak region of a pressure load of pistons received by the rollers engaged in the annular grooves and a value of a positive peak region of a centrifugal force load received by the rollers are set, so that they are substantially equal to each other, and phases of the two peak regions are deviated from each other. In addition, the phase negative peak region of a vane pushing-down load received by the rollers and the phase of the positive peak region of the pressure load of the pistons received by the rollers are established, so that they are overlapped at least partially on each other.

In a rotary fluid machine including pistons () reciprocally received in cylinders () provided in a rotor (), and vanes () fitted in vane grooves provided in the rotor () for reciprocal movement, the rotor () includes a rotor core () which is supported on a rotary shaft () and in which the cylinders () are accommodated, and twelve rotor segments () separated in a circumferential direction and fixed to surround an outer peripheral surface of the rotor core (); and each of the vane grooves () is defined between the adjacent rotor segments (). Thus, the dimensional accuracy of the vane grooves () can be enhanced without need for a special accurate working or processing. In addition, the transmission of heat from the rotor core () of a relatively high temperature to the rotor segments () of a relatively low temperature can be blocked, whereby the dissipation of the heat to the outside of the rotor () can be suppressed, leading to an enhancement in heat efficiency, and moreover, the thermal deformation of various portions of the rotor () can be moderated.

Rotary fluid machine having rotor segments on the outer periphery of a rotor core

A waste heat recovery system for an internal combustion engine. The internal combustion engine includes first and second raised temperature portions. The raised temperature is higher at the first portion than at the second portion. A first evaporating portion generates a first vapor from the first raised temperature portion. A second evaporating portion generates a second vapor from the second raised temperature portion and with a lower pressure than the first vapor. First and second energy converting portions of a displacement type expander converts expansion energy of the first and second vapor into mechanical energy. A condenser and a supply pump are also provided.

Waste heat recovery device for internal combustion engine

A vane type fluid machine includes: a casing; a rotor rotating in the casing; and a plurality of vanes supported by the rotor to slide on an inner surface of the casing. A seal portion of each vane is formed to be elastically deformable so as to slide on the inner surface of the casing while bending backward of a rotational direction of the rotor. Therefore, an improved structure of the seal portion of each vane secures good sealing performance even if machining accuracy of the inner surface of the casing is alleviated.

Vane type fluid machinery having a deformable seal portion on the vane

Rotary type fluid machine includes a casing , a rotor and a plurality of vane-piston units U -U which are disposed in a radiate arrangement on the rotor . Each of the vane-piston units U -U has a vane sliding in a rotor chamber and a piston placed in abutment against an on-slide side of the vane . When it functions as an expanding machine , the expansion of a high pressure gas is used to operate the pistons thereby to rotate the rotor via vanes and the expansion of a low pressure gas caused by a pressure reduction in the high pressure gas is used to rotate the rotor via the vanes . On the other hand, when it functions as a compressing machine, the rotation of rotor is used to supply a low pressure air to the side of pistons via vanes and further, the pistons are operated by the vanes to convert the low pressure air to the high pressure air. Thus, a rotary type fluid machine having expanding and compressing functions, with the merits belonging to the piston type and the merits belonging to the vane type, can be provided.

Rotary type fluid machine, vane type fluid machine, and waste heat recovering device for internal combustion engine

Rotary type fluid machine includes a casing a rotor and a plurality of vane-piston units U -U which are disposed in a radiate arrangement on the rotor Each of the vane-piston units U -U has a vane sliding in a rotor chamber and a piston placed in abutment against a non-slide side of the vane When it functions as an expanding machine the expansion of a high pressure gas is used to operate the pistons thereby to rotate the rotor via vanes and the expansion of a low pressure gas caused by a pressure reduction in the high pressure gas is used to rotate the rotor via the vanes On the other hand, when it functions as a compressing machine, the rotation of rotor is used to supply a low pressure air to the side of pistons via vanes and further, the pistons are operated by the vanes to convert the low pressure air to the high pressure air. Thus, a rotary type fluid machine having expanding and compressing functions, with the merits belonging to the piston type and the merits belonging to the vane type, can be provided.

Rotary fluid machinery, vane fluid machinery, and waste heat recovery device of internal combustion engine

A heat-resistant magnesium alloy containing, based on the total weight of the alloy, 4.5-10 wt. % of aluminum, 0.1-3 wt. % of calcium, 1-3 wt. % of a rare earth element and 0.2-1 wt. % of manganese and having a composition that the contents of aluminum, calcium and the rare earth element satisfy the relationship of the following expression (1):

Heat-resistant magnesium alloy

A heat- and abrasion-resistant aluminum alloy having a grain size of the matrix of .alpha.-aluminum in the alloy not more than 1,000 nm; a grain size of an intermetallic compounds contained in the alloy of not more than 500 nm; and 0.5 to 20% by volume of ceramic particles in the range of 1.5 to 10 .mu.m in particle size and dispersed in the alloy. By this composition, the stress concentration due to the ceramic particles is reduced. Furthermore, because the powders bind well with each other, the heat resistance and abrasion resistance are compatibly improved without decreasing toughness and ductility.

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Wako, Japan

Kensuke Honma