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81. 发明专利

JP2010222986A WARM-UP CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 有权
公开(公告)号：JP2010222986A
公开(公告)日：2010-10-07
申请号：JP2009068228
申请日：2009-03-19
申请人： TOYOTA MOTOR CORP
发明人： MATSUNAGA AKIO
IPC分类号： F02P19/02 , F02D17/00 , F02D29/02 , F02D45/00
摘要： PROBLEM TO BE SOLVED: To provide a warm-up control device for an internal combustion engine capable of making compatible the reduction of a fuel consumption quantity caused by the execution of automatic stop control and the suppression of unnecessary power consumption caused by electricity carry to a glow plug. SOLUTION: The warm-up control device for the internal combustion engine is used for a diesel engine executing the automatic stop control stopping operation of the internal combustion engine based on the establishment of automatic stop conditions, and the automatic start control starting operation of the internal combustion engine based on the establishment of automatic start conditions during an engine stop by automatic stop control. A catalyst device is warmed up by the control of a glow plug disposed on the engine. In glow plug electricity carry control, a process for prohibiting electricity carry to the glow plug accompanied by the engine operation stop by automatic stop control, and a process renewing demand electricity carry time Tx which is an electricity carry time of the glow plug after engine start based on automatic stop time Ta by automatic stop control are executed. COPYRIGHT: (C)2011,JPO&INPIT

82. 发明专利

JP2004011492A REFERENCE POINT LEARNING METHOD FOR NOx SENSOR 审中-公开
公开(公告)号：JP2004011492A
公开(公告)日：2004-01-15
申请号：JP2002164124
申请日：2002-06-05
申请人： TOYOTA MOTOR CORP
发明人： KOBAYASHI MASAAKI , MATSUNAGA AKIO , SUYAMA KINGO , SUZUKI YUSUKE , NEGAMI AKIHIKO
IPC分类号： F02M25/07 , F01N3/20 , F02D9/02 , F02D45/00
摘要： PROBLEM TO BE SOLVED: To provide technology for precisely learning a reference point in a reference point learning method for a NOx sensor. SOLUTION: While the amount of intake air is increased and the amount of EGR gas is reduced during decelerating a vehicle when the supply of fuel is stopped, the concentration of NOx to be detected at this time is learned as the reference point. Herein, during stopping the supply of the fuel, intake air is exhausted as it is. Then, exhaust air including NOx can be quickly exhausted by increasing the amount of the intake air and the circulation of the exhaust air including NOx can be suppressed by reducing the amount of the EGR gas. Thus, the concentration of NOx becomes zero soon, permitting an output value for the sensor at this time to be learned as the reference point. COPYRIGHT: (C)2004,JPO

83. 发明专利

JPH10288105A FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH10288105A
公开(公告)日：1998-10-27
申请号：JP10030597
申请日：1997-04-17
申请人： TOYOTA MOTOR CORP
发明人： MATSUNAGA AKIO , MURAKAMI GENICHI
IPC分类号： F02M37/00 , F02D41/40 , F02M47/02
摘要： PROBLEM TO BE SOLVED: To prevent hunting caused in fuel pressure control by a change in a bulk elastic modulus due to the variation of the fuel pressure. SOLUTION: This device supplies high-pressure fuel to a common rail 3 from a high-pressure fuel injection pump 5, and to respective fuel injection valves 1 from the common rail 3. A control circuit (ECU) 20 sets fuel supply quantity to the rail 3 from the fuel pump so as to include proportional component quantity proportional to deviation between common rail fuel pressure detected by a fuel pressure sensor 31 and target fuel pressure to be set in accordance with an engine operating condition; and moreover sets a proportional factor, used for calculating a proportional component, the lower with the higher fuel pressure calculated by the sensor 31, to compensate the increase of a bulk modulus due to a fuel pressure rise, thereby preventing hunting caused in fuel pressure control at the time of high pressure.

84. 发明专利

JP2002138889A CONTROL DEVICE FOR VEHICLE AND RECORDING MEDIUM 失效
公开(公告)号：JP2002138889A
公开(公告)日：2002-05-17
申请号：JP2000336348
申请日：2000-11-02
申请人： TOYOTA MOTOR CORP
发明人： NAKAYAMA SHIGEKI , SUEMATSU TOSHIO , FUKUMA TAKAO , ODA TOMIHISA , HARADA YASUO , MATSUNAGA AKIO , ONO TOMOYUKI , MIYAKE TERUHIKO , SUZUKI YOSHISUKE
IPC分类号： F02D45/00 , F02D41/14 , F02D41/24 , F02D41/38 , F02D41/40
摘要： PROBLEM TO BE SOLVED: To automatically adapt an input parameter of a vehicle or an engine at on-board. SOLUTION: An input control parameter for controlling a vehicle is combined with an output value of the vehicle which is varied at the most sensitive to the input control parameter. Respective input control parameters combined with the output value such that respective output values become target output values corresponding thereto respectively are simultaneously feedback-controlled. When the respective output values becomes within a permission adaptation range of the target output values, it is judged that an adaptation is completed and the input control parameter at that time is made to a parameter adaptation value.

85. 发明专利

JP2000064892A FUEL INJECTION CONTROLLING DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JP2000064892A
公开(公告)日：2000-02-29
申请号：JP23313098
申请日：1998-08-19
申请人： TOYOTA MOTOR CORP
发明人： MATSUNAGA AKIO , FUKUMA TAKAO
IPC分类号： F02D45/00 , F02D41/38 , F02D41/40
摘要： PROBLEM TO BE SOLVED: To effectively reduce an engine combustion sound. SOLUTION: A combustion sound sensor 15 is provided in order to detect a combustion sound in each air cylinder of a diesel engine. A control circuit (ECU) 20 conducts a pilot fuel injection to each air cylinder by fuel injection valves 10a to 10d before main fuel injection. The ECU uses a combustion sound of each air cylinder detected with the combustion sound sensor 15 at the time of stopping the pilot fuel injection as a standard value of the combustion sound, and calculates a combustion sound control amount on a dimensionless basis to determine a combustion sound detection value of each air cylinder in operating of the pilot fuel injection detected by the sensor 15. Further, the ECU corrects the amount of the pilot fuel injection so as to minimize the combustion sound control amount. By using the combustion sound control amount, the combustion sound of each air cylinder can be assessed by a common standard in spite of a difference in a condition of each air cylinder, so that a pilot fuel injection amount correction for suppressing the combustion sound is simplified and the precision of the correction is improved.

86. 发明专利

JPH09195846A CYLINDER HEAD STRUCTURE OF MULTICYLINDER INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH09195846A
公开(公告)日：1997-07-29
申请号：JP724696
申请日：1996-01-19
申请人： TOYOTA MOTOR CORP
发明人： MATSUNAGA AKIO , SUZUKI MAKOTO , ABE SHIZUO
IPC分类号： F02F1/00 , F01P3/02 , F02F1/24 , F02F1/36 , F02F1/40 , F02F1/42
摘要： PROBLEM TO BE SOLVED: To prevent generation of thermal stress in the wall surrounding a recessed part in the longitudinal direction of a cylinder head accompanied by the temperature rise in the cylinder head. SOLUTION: In a cylinder head structure of a multicylinder internal combustion engine in which recessed parts to partition an upper space of a combustion chamber are formed in a lower wall face of a cylinder head and a water jacket 24 to cool the wall faces of the recessed parts is formed in the cylinder head, a slit 26 is formed in the bottom wall face 28 of the water jacket 24 in a direction in which a plurality of the recessed parts formed in the cylinder head lower wall face corresponding to respective combustion chambers are parted.

87. 发明专利

JP2003120393A FUEL INJECTION QUANTITY CONTROLLER OF INTERNAL COMBUSTION ENGINE 审中-公开
公开(公告)号：JP2003120393A
公开(公告)日：2003-04-23
申请号：JP2001310499
申请日：2001-10-05
申请人： TOYOTA MOTOR CORP , DENSO CORP
发明人： SUZUKI YOSHISUKE , MATSUNAGA AKIO , FUKUMA TAKAO , NARAHARA YOSHIHIRO
IPC分类号： F02M47/02 , F02D41/04 , F02D41/38 , F02D41/40 , F02D45/00 , F02M65/00
摘要： PROBLEM TO BE SOLVED: To keep the accuracy of fuel injection quantities good by compensating changes in the injection characteristics of fuel injection valves without requiring heavy computational loads, relating to a fuel injection quantity controller of an internal combustion engine. SOLUTION: An approximation where deviations Δτ of the current-carrying time τof the fuel injection valve are determined according to the relationship between variations ΔDs and ΔFSP of a specific variation assuming element is prepared for each injection requirement point. The deviations Δτ are measured at the injection requirement points whose number is equal to or greater than the number of variation assuming elements. The deviations Δτ measured are substituted into approximations corresponding to the plurality of injection requirement points at which the deviations are measured, to set up simultaneous equations. The simultaneous equations are solved to determine the variations ΔDs and ΔFSP. The calculated variations ΔDs and ΔFSP are substituted into the approximation (step 112) corresponding to the desired injection requirement point (step 110), to determine the deviation Δτ appearing at that injection requirement point (step 114). The current-carrying time τ is corrected using the determined deviation Δτ (step 118) to effect injection control (step 122).

88. 发明专利

JP2002047975A FUEL INJECTION CONTROLLER OF INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JP2002047975A
公开(公告)日：2002-02-15
申请号：JP2000233184
申请日：2000-07-28
申请人： TOYOTA MOTOR CORP , NIPPON SOKEN
发明人： MIYOSHI SHINJI , ITO MASAHARU , SHIBATA HITOSHI , MATSUNAGA AKIO
IPC分类号： F02M45/04 , F02D41/04 , F02D41/38 , F02D41/40 , F02M51/00
摘要： PROBLEM TO BE SOLVED: To provide a fuel injection controller capable of reducing combustion noise belonging to a desired frequency region among combustion noises in an internal combustion engine. SOLUTION: This fuel injection controller of an internal combustion engine capable of controlling fuel injection of an injector 2 in such a way that fuel to be injected at a time for one cylinder of the internal combustion engine 1 is divided into a plurality of steps and is injected is provided with a computing unit 4 calculating a target value of a difference in time when pressure waves occur (combustion interval) when combustion at each fuel injection step is done and a control device 3 controlling an interval of valve opening time of each injector 2 based on the difference in time. For example, in the case of pilot combustion for dividing fuel into two steps for injection, it is found that a specific high frequency component of cylinder internal pressure is reduced due to the interference of pressure waves when pilot combustion is done and pressure waves when main combustion is done to control a target frequency to be reduced to an optimum condition by controlling the difference in time between the pilot combustion and the main combustion.

89. 发明专利

JP2001234800A FUEL INJECTION CONTROL DEVICE 失效
公开(公告)号：JP2001234800A
公开(公告)日：2001-08-31
申请号：JP2000054395
申请日：2000-02-25
申请人： TOYOTA MOTOR CORP
发明人： MATSUNAGA AKIO
IPC分类号： F02M45/04 , F02D35/02 , F02D41/02 , F02D41/14 , F02D41/22 , F02D41/38 , F02D41/40 , F02D45/00 , F02M63/00
摘要： PROBLEM TO BE SOLVED: To precisely detect a combustion sound suppressing effect due to pilot fuel injection. SOLUTION: Combustion sound sensors 15a-15d are provided on each of cylinders of an engine 1, combustion sound of each of the cylinders is detected by a gate circuit 18, it is AD-converted by a high speed AD converter 18 and it is input to an electronic control unit ECU 20 as a combustion sound signal of each of the cylinders. The ECU computes a sound pressure level for each of frequency components by FFT-processing the input combustion sound signals, and a combustion sound central value is computed in accordance with the sound pressure level of a specific frequency component. The specific frequency component is a frequency component to be expressed as (n+(1/2))×f when an inverse number of a pilot fuel injection interval is specified as (f). Since the specific frequency component is comparatively larger than the other frequency components in sound pressure level lowering width at practice when practicing pilot fuel injection to the time of stopping pilot fuel injection, the computed combustion sound central value is hardly influenced upon by noise, and combustion sound suppressing effect becomes a value to precisely express the combustion sound suppressing effect.

90. 发明专利

JP2000054907A COMBUSTION NOISE DETECTING DEVICE OF INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JP2000054907A
公开(公告)日：2000-02-22
申请号：JP22301298
申请日：1998-08-06
申请人： TOYOTA MOTOR CORP
发明人： MATSUNAGA AKIO , FUKUMA TAKAO
IPC分类号： G01M15/04 , F02D45/00 , G01M15/00
摘要： PROBLEM TO BE SOLVED: To accurately detect a combustion noise of internal combustion engine. SOLUTION: A combustion noise sensor 15 for detecting a combustion noise is provided to a diesel engine 1 to input an output of sensor 15 to an electronic control unit(ECU) 20 via a filter circuit 17, a gate circuit 18, and a peak hold circuit 19. The ECU calculates a fuel injection timing AINJ to each cylinder and an ignition lag time aTBD in the cylinders based on an engine operating state. An output timing AGOP (crank angle before a top dead point) of a gate open signal to the gate circuit 18 is calculated as AGOP=AINJ-(aTBD+aTSD +aTED-aTGD) using a detection lag time aTSD of the sensor 15, a lag time aTED of the filter circuit 17, and operation lag time aTGD of the gate circuit 18. Accordingly, a combustion noise can be accurately detected at start of combustion in the cylinder thereby performing the combustion noise detection in which an influence of noise is eliminated.

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