Inventor
HIRAYA KOJI
JP29 patents
⚠️ This page may combine multiple inventors who share the name “HIRAYA KOJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NISSAN MOTOR
26 patentsUS6386177B2May 14, 2002
System and method for auto-ignition of gasoline internal combustion engine
NISSAN MOTOR124 citations98
US6659068B2Dec 9, 2003
Feedback control for auto-ignition two-stage combustion of gasoline in engine cylinder
NISSAN MOTOR63 citations96
US6425367B1Jul 30, 2002
Compression self-ignition gasoline internal combustion engine
NISSAN MOTOR62 citations96
US6267097B1Jul 31, 2001
Compression self-igniting gasoline engine
NISSAN MOTOR119 citations96
US6622689B2Sep 23, 2003
Method and system for controlling auto-ignition in an internal combustion engine
NISSAN MOTOR26 citations93
US6138639AOct 31, 2000
In-cylinder direct-injection spark-ignition engine
NISSAN MOTOR131 citations93
US7073480B2Jul 11, 2006
Exhaust emission control apparatus and method for internal combustion engine
NISSAN MOTOR51 citations92
US6932175B2Aug 23, 2005
Control apparatus for hybrid vehicle
NISSAN MOTOR48 citations92
US6912989B2Jul 5, 2005
Fuel injection control device for a direct fuel injection engine
NISSAN MOTOR21 citations92
US6814046B1Nov 9, 2004
Direct fuel injection engine
NISSAN MOTOR21 citations92
US6739309B2May 25, 2004
Direct fuel injection internal combustion engine
NISSAN MOTOR22 citations92
US6636797B2Oct 21, 2003
Enhanced multiple injection for auto-ignition in internal combustion engines
NISSAN MOTOR35 citations92
US6612294B2Sep 2, 2003
Auto-ignition of gasoline engine by varying exhaust gas retaining duration
NISSAN MOTOR42 citations92
US7334547B2Feb 26, 2008
Variable expansion-ratio engine
NISSAN MOTOR15 citations84
US6832594B2Dec 21, 2004
Direct fuel injection engine
NISSAN MOTOR15 citations84
US7334573B2Feb 26, 2008
NOx emission reduction apparatus
NISSAN MOTOR16 citations83
US6672276B2Jan 6, 2004
Direct fuel injection engine
NISSAN MOTOR11 citations74
US7234437B2Jun 26, 2007
Direct-injection internal combustion engine and combustion method therefor
NISSAN MOTOR9 citations72
US7980207B2Jul 19, 2011
Multi-link engine
NISSAN MOTOR4 citations63
US7104247B2Sep 12, 2006
Direct fuel injection engine
NISSAN MOTOR5 citations63
US7086378B2Aug 8, 2006
Direct fuel injection internal combustion engine
NISSAN MOTOR3 citations63
US7188589B2Mar 13, 2007
Direct injection internal combustion engine
NISSAN MOTOR6 citations62
US7028662B2Apr 18, 2006
Direct fuel injection engine
NISSAN MOTOR6 citations62
US6976469B2Dec 20, 2005
Direct fuel injection type internal combustion engine
NISSAN MOTOR6 citations62
US6851408B2Feb 8, 2005
Direct fuel injection engine
NISSAN MOTOR6 citations62
US7475675B2Jan 13, 2009
In-cylinder direct fuel-injection engine
NISSAN MOTOR2 citations61