Atsushi Hohkita

7406946, Aug 5, 2008

Apr 2, 2007

11/695195

Atsushi Watanabe - Novi MI, US
Harsha Badarinarayan - Novi MI, US
Jonathan Borg - Livonia MI, US
Donald J. McCune - Farmington Hills MI, US
Takuya Shiraishi - West Bloomfield MI, US
Atsushi Hohkita - Novi MI, US
Masahiro Soma - Novi MI, US
Hiroaki Saeki - Ibaraki-Ken, JP

Hitachi, Ltd. - Tokyo

F02M 61/14
F02M 61/18

123470, 123456

A method and apparatus for attenuating fuel pump noise in a direct injection internal combustion engine. In one proposal, the direct injection fuel nozzle is suspended from a fuel rail in a fashion that avoids direct metal-to-metal contact between the injector and the engine block. The direct injection nozzle may also be connected to the fuel rail by a pair of spaced-apart seals which equalize the longitudinal pressure on the nozzle during operation. Enlarged diameter fuel reservoirs and/or a restricted orifice may be provided fluidly in series between the fuel pump and the direct injection nozzle in order to attenuate noise resulting from fuel pump pulsation.

7527038, May 5, 2009

Jul 2, 2008

12/166760

Atsushi Watanabe - Novi MI, US
Atsushi Hohkita - Novi MI, US
Masahiro Soma - Danville KY, US
Hiroaki Saeki - West Bloomfield MI, US

Hitachi, Ltd - Tokyo

F02M 61/14
F02M 61/18

123470

An apparatus for attenuating fuel pump noise in a direct injection internal combustion engine. In one proposal, the direct injection fuel nozzle is suspended from a fuel rail in a fashion that avoids direct metal-to-metal contact between the injector and the engine block. The direct injection nozzle may also be connected to the fuel rail by a pair of spaced-apart seals which equalize the longitudinal pressure on the nozzle during operation. Enlarged diameter fuel reservoirs and/or a restricted orifice may be provided fluidly in series between the fuel pump and the direct injection nozzle in order to attenuate noise resulting from fuel pump pulsation. A clip holder and clip plate mount the fuel injector to the injector cup.

8038178, Oct 18, 2011

Mar 31, 2009

12/414795

Harsha Badarinarayan - Canton MI, US
Akira Inoue - Farmington Hills MI, US
Takashi Yoshizawa - Novi MI, US
Atsushi Hohkita - Novi MI, US
Hiroaki Saeki - West Bloomfield MI, US
Hiroshi Ono - Novi MI, US
Masahiro Soma - Danville KY, US
William Harvey - Brighton MI, US
Steve Miller - Livonia MI, US
Su-Wei Sung - Ann Arbor MI, US

Hitachi, Ltd - Tokyo

F16L 13/02

2852881, 285 62

A high pressure fuel pipe construction for an internal combustion engine, such as a direct injection engine. A conduit for the fuel is open at each end and a ball having a throughbore is slidably positioned over one end of the conduit. A reinforcing sleeve is positioned inside the end of the conduit so that the sleeve extends entirely through the ball. The sleeve, ball and the end of the conduit are then brazed together to attach the ball and conduit together. A double chamfer is provided at one end of the ball throughbore to facilitate inspection of the brazing quality. Additionally, a loop is formed in the conduit and a dampener is attached to the loop.

8074624, Dec 13, 2011

May 4, 2009

12/434702

Atsushi Hohkita - Novi MI, US
Masahiro Soma - Danville KY, US
Hiroaki Saeki - West Bloomfield MI, US
Hiroshi Ono - Novi MI, US

Hitachi Automotive Systems, Ltd. - Tokyo

F02M 69/46
F02M 69/52

123456, 123470

A fuel system component for a direct injection internal combustion engine. The component includes a fuel rail and a plurality of direct injection fuel injectors which are rigidly attached to the rail. Each fuel injector has an elongated body as well as a harness assembly extending laterally outward from the elongated body. Each injector is attached to the fuel rail such that, when viewed along an axis of the fuel injector body, the fuel rail overlies at least a portion of the injector body and at least a portion of the harness assembly.

RE43864, Dec 18, 2012

Aug 4, 2010

12/849890

Atsushi Watanabe - Novi MI, US
Harsha Badarinarayan - Novi MI, US
Jonathan Borg - Livonia MI, US
Donald J. Mccune - Farmington Hills MI, US
Takuya Shiraishi - West Bloomfield MI, US
Atsushi Hohkita - Novi MI, US
Masahiro Soma - Novi MI, US
Hiroaki Saeki - Ibaraki-Ken, JP

Hitachi, Ltd. - Tokyo

F02M 61/14
F02M 61/18

123470, 123456

A method and apparatus for attenuating fuel pump noise in a direct injection internal combustion engine. In one proposal, the direct injection fuel nozzle is suspended from a fuel rail in a fashion that avoids direct metal-to-metal contact between the injector and the engine block. The direct injection nozzle may also be connected to the fuel rail by a pair of spaced-apart seals which equalize the longitudinal pressure on the nozzle during operation. Enlarged diameter fuel reservoirs and/or a restricted orifice may be provided fluidly in series between the fuel pump and the direct injection nozzle in order to attenuate noise resulting from fuel pump pulsation.

8555858, Oct 15, 2013

Sep 20, 2011

13/237132

Harsha Badarinarayan - Canton MI, US
Akira Inoue - Farmington Hills MI, US
Takashi Yoshizawa - Novi MI, US
Atsushi Hohkita - Novi MI, US
Hiroaki Saeki - West Bloomfield MI, US
Hiroshi Ono - Novi MI, US
Masahiro Soma - Danville KY, US
William T. Harvey - Brighton MI, US
Steven J. Miller - Livonia MI, US
Su-Wei Sung - Ann Arbor MI, US

Hitachi, Ltd - Tokyo

F02M 55/02
F16L 27/04

123468, 123469, 285261, 2853342

A high pressure fuel pipe construction for an internal combustion engine, such as a direct injection engine. A conduit for the fuel is open at each end and a ball having a throughbore is slidably positioned over one end of the conduit. A reinforcing sleeve is positioned inside the end of the conduit so that the sleeve extends entirely through the ball. The sleeve, ball and the end of the conduit are then brazed together to attach the ball and conduit together. A double chamfer is provided at one end of the ball throughbore to facilitate inspection of the brazing quality. Additionally, a loop is formed in the conduit and a dampener is attached to the loop.