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1. 发明专利

GB2315695A Eliminating casting defects by applying pressure 未知
公开(公告)号：GB2315695A
公开(公告)日：1998-02-11
申请号：GB9715583
申请日：1997-07-23
申请人： TOYOTA MOTOR CO LTD
发明人： KARAKI MITSUHIRO , UDA SEIJI , NOZAKI MIKIYA , HASEBE MASAYUKI , SEKI AKIRA
IPC分类号： B22D29/00 , B21H1/00 , B21H7/00 , B21H7/18 , B22D31/00 , B23P6/04 , B21J1/02 , B22D17/00
摘要： A method of eliminating casting defects includes the steps of taking a casting out of a casting mold and applying a pressure to the casting taken out of the casting mold. The pressure is so determined as not to strike blows against the casting and as to be larger than a force required to crush casting defects. A rolling member such as a roller or a ball may be applied to the casting. Alternatively a bar pressurizing member may be applied to a specific portion of the surface. The casting may be heated before the pressure is applied thereto or while the pressure is applied thereto, suitably to a semi-molten state. The method may be applied to a cylinder block for an engine die-cast from aluminium.

2. 发明专利

DE69515226T2 未知
公开(公告)号：DE69515226T2
公开(公告)日：2000-08-24
申请号：DE69515226
申请日：1995-06-28
申请人： TOYOTA MOTOR CO LTD
发明人： NOZAKI MIKIYA , KARAKI MITSUHIRO , INUI MITSURU , FUTAMURA TAKEHITO , SAITOH AKIRA
IPC分类号： B22D18/02 , B22D17/22 , B22D17/32 , B22D27/11
摘要： The disclosed method of controlling a pressurizing pin, which serves to replenish for the necessary locality with molten metal during solidification of molten metal charged in the cavity, features that the operation of the molten metal replenishment by the pressurizing pin is caused when it is detected that the volume of non-solidified metal has become less than the volume effective for obtaining a molten metal replenishment effect. It is thus possible to obtain efficient replenishment for the necessary locality with molten metal by using a pressurizing pin which is limited in size and stroke.

3. 发明专利

DE69603229D1 未知
公开(公告)号：DE69603229D1
公开(公告)日：1999-08-19
申请号：DE69603229
申请日：1996-05-02
申请人： TOYOTA MOTOR CO LTD
发明人： TAKAMI TOSHIHIRO , KARAKI MITSUHIRO
IPC分类号： F02F1/00 , B22D19/00 , B22D19/08 , F01P3/02 , F02F1/10 , F02F1/14 , F02F7/00
摘要： A method for producing a cylinder block (11) for an internal combustion engine having a sealing surface (13) on which a gasket (63) is mounted, a number of cylinder bores (1-4) arranged side by side, each cylinder bore opening to the sealing surface, a water jacket (16) surrounding the cylinder bores (1-4), and a cooling passage (17) located between the cylinder bores. A liner assembly (14) is first formed by joining a set of cylinder liners (1-4) with each other side by side. At least one of the liners has a recess (46) that forms a space (21,22,93) located between adjacent cylinder liners when the liners are joined. A cast body (62) having the water jacket is molded by pouring molten metal into a mold after the liner assembly (14) is positioned in the mold. The molten metal is prevented from entering the space during the molding process. The space is communicated with the water jacket to form the cooling passage (17).

4. 发明专利

DE69723525D1 未知
公开(公告)号：DE69723525D1
公开(公告)日：2003-08-21
申请号：DE69723525
申请日：1997-10-15
申请人： TOYOTA MOTOR CO LTD
发明人： TAKAMI TOSHIHIRO , KARAKI MITSUHIRO , KENMOCHI MASAMITU , SASADA KOICHIRO
IPC分类号： F02F1/00 , B22C9/24 , B22D17/00 , B22D19/08 , F02F1/10 , F02F1/16 , F02F7/00
摘要： A cylinder block (10) of an internal combustion engine has a portion between a cylinder block body (12) and a cylinder liner (14) which is sealed against a coolant so as to prevent the coolant from entering a crank case. The cylinder block body is made of a first material. The cylinder liner (14) is cast in the cylinder block body (26). The cylinder liner (14) is made of a second material different from the first material. The cylinder liner (14) has an engaging portion (26) contacting a portion of the cylinder block body (12) from outside in a radial direction of the cylinder liner.

5. 发明专利

DE69809126T2 未知
公开(公告)号：DE69809126T2
公开(公告)日：2003-05-08
申请号：DE69809126
申请日：1998-05-29
申请人： TOYOTA MOTOR CO LTD
发明人： FUJINE MANABU , YAMAZAKI HIKOHITO , KAJIKAWA YOSHIAKI , HASEBE MASAYUKI , SHIMIZU MASUO , KARAKI MITSUHIRO
IPC分类号： F02F1/00 , B22D17/00 , B22D17/24 , B22D19/00 , B22D19/08 , B22D19/14

6. 发明专利

DE69520179D1 未知
公开(公告)号：DE69520179D1
公开(公告)日：2001-04-05
申请号：DE69520179
申请日：1995-08-17
申请人： TOYOTA MOTOR CO LTD
发明人： NOZAKI MIKIYA , KARAKI MITSUHIRO , INUI MITSURU , FUTAMURA TAKEHITO , SAITOH AKIRA
IPC分类号： B22D18/02 , B22D17/20 , B22D17/22 , B22D17/32 , B22D27/11 , B29C45/56 , B29C45/76 , B29C45/82
摘要： A pressure casting method is disclosed, which permits sufficient pressurizing effect to be obtained for the entire molten metal by varying the speed of advancement of a pressurizing pin according to the state of solidification of the molten metal during pressurizing. In pressure casting using a pressure casting apparatus, while charged molten metal is solidified, it is pressurized by causing advancement of the pressurizing pin into a cavity of the die. During this time, the reaction force received by the pressurizing pin from the molten metal is measured by a pressure sensor, and the speed of advancement of the pressurizing pin is varied through control of the opening degree of a flow control valve according to the measured reaction force. While the reaction force during the progress of solidification of molten metal is high, the flow control valve is controlled to a high opening degree to provide for a high speed of advancement of the pressurizing pin so as to apply a high pressurizing force. On the other hand, while the reaction force is low so that there is a delay in the solidification of molten metal, the speed of advancement is reduced so that no pressurizing force is applied until completion of solidification of molten metal. The pressurizing pin 10 is advanced while its advancement speed is controlled in the above way, and pressurizing over the entire stroke is completed.

7. 发明专利

CA2156220C METHOD FOR COATING A DIE SURFACE WITH RELEASE AGENT 未知
公开(公告)号：CA2156220C
公开(公告)日：1999-02-09
申请号：CA2156220
申请日：1995-08-16
申请人： TOYOTA MOTOR CO LTD
发明人： KARAKI MITSUHIRO , NOZAKI MIKIYA , YAMAMOTO NAOYA
IPC分类号： B05D5/08 , B05D7/22 , B05D7/24 , B22C3/00 , B22C23/02 , B22D17/20
摘要： A method for coating a die surface with a foamed release agent is disclosed. The release agent is foamed outside a die and then is supplied to a die cavity. Alternatively, liquid release agent is supplied to the die cavity and then is foamed inside the die. Excess foamed release agent is removed from the die before molten metal is supplied to the cavity. Alternatively, the foamed release agent is left in the cavity, and molten metal is supplied to the cavity. The release agent is foamed through mechanical agitation, bubbling, or by gas released from the release agent when heated. 23

8. 发明专利

DE19650349A1 IC engine cylinder block manufacturing method 未知
公开(公告)号：DE19650349A1
公开(公告)日：1997-06-05
申请号：DE19650349
申请日：1996-12-04
申请人： TOYOTA MOTOR CO LTD
发明人： SHIBATA YUKIHIRO , OKAGUCHI SHIGEKI , KARAKI MITSUHIRO
IPC分类号： F02F1/00 , B22C9/24 , B22D19/00 , B22D19/08 , B22D19/16 , B22F3/02 , B22F3/14 , B22F5/00 , B22F5/12 , F02F7/00 , B22D15/02
摘要： The method involves first forming a first space (5) between a mould tool (1) and a core (2) and then introducing a cylinder block material (3) and a liner material (4) into the space. The distance between the tool and the core is increased to form an additional space (6). A further cylinder block and liner materials are introduced into the second space. The core is made up of a number petal-like elements (2a) arranged in a circle around a core element (2b) which is axially movable relative to the elements. The second space is produced by reduction, through axial motion of the core element, of the diameter defined by the petal-like elements. Alternatively, the second space is formed by replacement of the core by a smaller core (2') and serves for formation of the cylinder lining. The spaces for all cylinders of the internal combustion engine are independent of one another.

9. 发明专利

DE69520179T2 未知
公开(公告)号：DE69520179T2
公开(公告)日：2001-08-02
申请号：DE69520179
申请日：1995-08-17
申请人： TOYOTA MOTOR CO LTD
发明人： NOZAKI MIKIYA , KARAKI MITSUHIRO , INUI MITSURU , FUTAMURA TAKEHITO , SAITOH AKIRA
IPC分类号： B22D18/02 , B22D17/20 , B22D17/22 , B22D17/32 , B22D27/11 , B29C45/56 , B29C45/76 , B29C45/82
摘要： A pressure casting method is disclosed, which permits sufficient pressurizing effect to be obtained for the entire molten metal by varying the speed of advancement of a pressurizing pin according to the state of solidification of the molten metal during pressurizing. In pressure casting using a pressure casting apparatus, while charged molten metal is solidified, it is pressurized by causing advancement of the pressurizing pin into a cavity of the die. During this time, the reaction force received by the pressurizing pin from the molten metal is measured by a pressure sensor, and the speed of advancement of the pressurizing pin is varied through control of the opening degree of a flow control valve according to the measured reaction force. While the reaction force during the progress of solidification of molten metal is high, the flow control valve is controlled to a high opening degree to provide for a high speed of advancement of the pressurizing pin so as to apply a high pressurizing force. On the other hand, while the reaction force is low so that there is a delay in the solidification of molten metal, the speed of advancement is reduced so that no pressurizing force is applied until completion of solidification of molten metal. The pressurizing pin 10 is advanced while its advancement speed is controlled in the above way, and pressurizing over the entire stroke is completed.

10. 发明专利

DE69611751D1 未知
公开(公告)号：DE69611751D1
公开(公告)日：2001-03-15
申请号：DE69611751
申请日：1996-11-28
申请人： TOYOTA MOTOR CO LTD
发明人： TAKAMI TOSHIHIRO , KARAKI MITSUHIRO
IPC分类号： F02B75/18 , B22D19/00 , B22D19/08 , F02F1/00 , F02F1/10 , F02F7/00

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