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1. 发明专利

JPH10318029A FUEL INJECTION TIMING CONTROL DEVICE FOR DIESEL ENGINE 失效
公开(公告)号：JPH10318029A
公开(公告)日：1998-12-02
申请号：JP12888297
申请日：1997-05-19
申请人： TOYOTA MOTOR CORP , TOYODA AUTOMATIC LOOM WORKS , DENSO CORP
发明人： AMANO NAOKI , ARAKAWA SHINICHI , INABA TAKAYOSHI , SHIBATA MASANORI
IPC分类号： F02D1/18 , F02B3/06 , F02D41/06 , F02D41/20 , F02D41/40 , F02D45/00
摘要： PROBLEM TO BE SOLVED: To prevent deterioration of controllability caused by fluctuation of battery voltage, in a fuel injection timing control device for a diesel engine. SOLUTION: A fuel injection pump 1 is provided with a plunger 12 for forcibly feeding fuel in a high pressure chamber 15 to an injection nozzle 4 by pressurizing to high pressure, a timer device 26 for regulating a fuel injection timing by changing a reciprocating motion timing of the plunger 12, and an electromagnetic spill valve 23 for regulating a fuel injection rate by stopping pressurizing of fuel in the high pressure chamber 15. A TCV 33 arranged on the timer device 26 is current carrying out-controlled by an electronic control device (ECU) 71, fuel pressure in the high pressure chamber 15 is regulated, and thereby, the position of the timer piston 28 in the timer device 26 is changed. When it is judged in the ECU 71 that a diesel engine 2 is in a start condition and voltage of a battery 98 is fluctuated, a current carrying out timing of the TCV 33 is changed to a timing when battery voltage is increased more than a prescribed value.

2. 发明专利

JPH11132078A FUEL INJECTION CONTROLLER FOR DIESEL ENGINE 失效
公开(公告)号：JPH11132078A
公开(公告)日：1999-05-18
申请号：JP29209497
申请日：1997-10-24
申请人： TOYOTA MOTOR CORP , TOYODA AUTOMATIC LOOM WORKS , DENSO CORP
发明人： AMANO NAOKI , ARAKAWA SHINICHI , SHIBATA MASANORI
IPC分类号： F02B3/06 , F02D41/06 , F02D41/40 , F02D45/00 , F02M45/02 , F02N19/00 , F02N17/08
摘要： PROBLEM TO BE SOLVED: To control operation of split injection under a more appropriate condition. SOLUTION: The fuel injection controller 2 of an engine 1 is constituted of a fuel injection nozzle 4, an injection pump 5, an electromagnetic spill valve 21 and a timing control valve 20 for regulating fuel injection quantity and timing respectively, and an electronic control unit(ECU) 8 for controlling them. The ECU 8 controls the fuel injection controller 2 and conducts split injection when at least either of fuel temperature or cooling water temperature detected by a fuel temperature sensor 22 or a water temperature sensor 23 at the time of operation of a starter 25, is lower than prescribed temperature. The split injection continues until the starter 25 is stopped, or a starting mode is released after the rotational speed of the engine 1 becomes a prescribed value or higher.

3. 发明专利

JP2000337199A FUEL INJECTION TIMING CONTROL DEVICE OF DIESEL ENGINE 失效
公开(公告)号：JP2000337199A
公开(公告)日：2000-12-05
申请号：JP14684299
申请日：1999-05-26
申请人： TOYOTA MOTOR CORP , TOYODA AUTOMATIC LOOM WORKS
发明人： AMANO NAOKI , ARAKAWA SHINICHI
IPC分类号： F02D41/40 , F02D41/04 , F02D41/08 , F02M59/26
摘要： PROBLEM TO BE SOLVED: To provide the fuel injection timing control device of a diesel engine reflected the difference of the effect to the fuel injection timing of a prestroke amount following to the difference of an engine temperature. SOLUTION: A fuel injection timing (eacld2bse+emacldq×eqfin) is corrected and the injection timing (eacld2) at a cooling time is set (S180, S190), based on a base prestroke amount (eaplstb) and the prestroke correction coefficient (t-mplstthw) S170) at the cooling time found out responding to the cooling water temperature (gthw). Thus, by correcting the fuel injection timing responding to the engine temperature and prestroke amount of a diesel engine, the difference of the effect to the prestroke amount between the cooling time and after warming up can be reflected to the fuel injection timing. Therefore, a proper fuel injection timing can be set for favorable combustion.

4. 发明专利

JPH11117788A FUEL INJECTION CONTROLLER FOR DIESEL ENGINE 失效
公开(公告)号：JPH11117788A
公开(公告)日：1999-04-27
申请号：JP27913897
申请日：1997-10-13
申请人： TOYOTA MOTOR CORP , TOYODA AUTOMATIC LOOM WORKS
发明人： AMANO NAOKI , ARAKAWA SHINICHI
IPC分类号： F02D41/06 , F02B3/06 , F02D41/38 , F02D41/40
摘要： PROBLEM TO BE SOLVED: To provide a fuel injection controller for a diesel engine, capable of setting a proper injection amount of fuel all times, whenever split injection is executed or not, for more startability. SOLUTION: A fuel injection controller 2 for an engine 1 has a fuel injection nozzle 4, an injection pump 5, an electromagnetic spill valve 21 to control the injection amount and timing of fuel, a timing control valve 20 and an electronic control unit(ECU) 8. The ECU 8 controls the fuel injection controller 2 when the engine 1 is judged to be in a cold starting condition in accordance with the detection results of a water temperature sensor 23 and others, so that its can split a required amount of fuel several times to execute split injection. In the ROM of the ECU 8, two maps are prepared for the calculation of a starting fuel injection amount during executing split injection at starting or not, so that the maps can be changed for the calculation of the injection amount corresponding to an injection method at starting.

5. 发明专利

JPH11247700A INJECTION AMOUNT CONTROLLING METHOD FOR ELECTRONICALLY CONTROLLED DIESEL ENGINE 失效
公开(公告)号：JPH11247700A
公开(公告)日：1999-09-14
申请号：JP4706498
申请日：1998-02-27
申请人： DENSO CORP , TOYODA AUTOMATIC LOOM WORKS
发明人： SUGIYAMA KOICHI , INABA TAKAYOSHI , AMANO NAOKI , ARAKAWA SHINICHI
IPC分类号： F02D41/22 , F02D41/38
摘要： PROBLEM TO BE SOLVED: To calculate the main spill valve opening/closing timing capable of controlling the injection amount properly even if NE pulse crack is generated and to correct erroneous data resulting from generation of NE pulse crack. SOLUTION: The first main spill valve opening/closing timing calculated in the same manner as in a conventional control is calculated and also the second main spill valve opening/closing timing is calculated using a reference which is NE pulses for calculating the final pilot spill valve opening timing free of influence even if NE pulse crack is generated, and the obtained two valve timings are compared. In the case where an NE pulse crack is generated, a first valve timing becomes earlier than normal, and therefore, if the first valve timing is earlier than a second valve timing, judgement is passed that generation of NE pulse crack is likely. If on the contrary, the first timing is later than the second timing, judgement is passed that no NE pulse crack is generated.

6. 发明专利

JPH11247702A INJECTION QUANTITY CONTROL METHOD OF ELECTRONIC CONTROL DIESEL ENGINE 失效
公开(公告)号：JPH11247702A
公开(公告)日：1999-09-14
申请号：JP4652998
申请日：1998-02-27
申请人： DENSO CORP , TOYODA AUTOMATIC LOOM WORKS
发明人： SUGIYAMA KOICHI , INABA TAKAYOSHI , AMANO NAOKI , ARAKAWA SHINICHI
IPC分类号： F02D41/22 , F02D41/38
摘要： PROBLEM TO BE SOLVED: To prevent the connection of the pilot injection and the main injection by setting a guard time for preventing the connection of the pilot/main injection relative to a pilot spill valve closing time, and setting an interval between the pilot spill valve opening time and the main spill valve closing time to be more than the guard time. SOLUTION: During the operation of an engine 1, an ECU 2 calculates a target main spill valve closing angle on the basis of the number of revolution of an engine and the engine water temperature, and calculates a target main spill valve closing time by converting the residual angle of the calculated value into the time. Then the minimum guard time necessary for preventing the connection of the pilot injection and the main injection is determined on the basis of the operating state, and compared with an interval between the pilot spill valve opening time and the target main spill valve closing time. When the interval is more than the minimum guard time, the target main spill valve closing time is regarded as the final main spill valve closing time, and in cases where it is less than the minimum guard time, the time obtained by adding the minimum guard time to the pilot spill valve opening time, is regarded as the main spill valve closing time.

7. 发明专利

JP2000291480A ELECTRONICALLYCONTROLLED FUEL INJECTION DEVICE FOR DIESEL ENGINE 失效
公开(公告)号：JP2000291480A
公开(公告)日：2000-10-17
申请号：JP9900499
申请日：1999-04-06
申请人： DENSO CORP , TOYOTA MOTOR CORP
发明人： ABE MASAYUKI , INABA TAKAYOSHI , AMANO NAOKI
IPC分类号： F02D45/00 , F02D41/22 , F02D41/40
摘要： PROBLEM TO BE SOLVED: To provide an injection amount control system, capable of improving the precision of the fuel injection amount without erroneously deciding a pulse crack, even if an increase command of the main injection amount is issued, and a data correcting system for correcting the data when the data required for finding AACT by a pulse crack is corrected. SOLUTION: A pulse crack is generates in pilot spill is to be generated after a prescribed time from a pilot spill valve opening time t2. That is, a pulse crack is generated between (H-I) a pulse signal H to be output after a pulse signal G as a calculation reference of the pilot spill valve opening time t2 and a pulse signal I to be output after it. In an ECU, etpls3 stored as a time internal between H and I in a memory is taken as a deciding value, and the presence or absence of the pulse crack is decided by comparing the time interval between two continuous pulses to be output according to the mean revolution of an engine with etpls3.

8. 发明专利

JP2001214784A ELECTRONICALLY CONTROLLED FUEL INJECTION SYSTEM FOR DIESEL ENGINE 失效
公开(公告)号：JP2001214784A
公开(公告)日：2001-08-10
申请号：JP2000023158
申请日：2000-01-31
申请人： DENSO CORP , TOYOTA MOTOR CORP
发明人： INABA TAKAYOSHI , KAMIYA KENJI , AMANO NAOKI
IPC分类号： F02M59/36 , F02D41/22 , F02D45/00
摘要： PROBLEM TO BE SOLVED: To provide a control system capable of properly correcting a data for calculating the spill valve opening time of the next cylinder even when pulse crack is generated a plurality of times. SOLUTION: After detecting a spill time set signal A, an estimated time esh of the appearance of a spill just-after signal is calculated. Thereafter, the time obtained by adding the estimated time esh to the spill valve opening time t2 is taken as the scheduled time of the appearance of the spill just-after signal, and the times to the pulse signals appearing before and after the scheduled time, or the time from the previous pulse signal to the scheduled time and the time from the scheduled time to this pulse signal are calculated. The pulse signal close to the scheduled time is taken as the spill just-after signal. According to the above processing, even if pulse crack is generated a plurality of times, the spill just-after signal can be detected, and the time interval from the spill time set signal A to the spill just-after signal and the time interval from the spill just-after signal to the following spill just-after signal can be calculated.

9. 发明专利

JP2000291473A FUEL INJECTION CONTROLLER OF INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JP2000291473A
公开(公告)日：2000-10-17
申请号：JP9641899
申请日：1999-04-02
申请人： TOYOTA MOTOR CORP , DENSO CORP
发明人： ITATSU TOSHIRO , AMANO NAOKI , SHIBATA MASANORI , INABA TAKAYOSHI
IPC分类号： F02D1/02 , F02D41/04 , F02D41/20 , F02D41/40 , F02D45/00 , F02M41/12 , F02M51/00 , F02M51/06
摘要： PROBLEM TO BE SOLVED: To improve accuracy of fuel injection by suitably decreasing the effects due to fluctuation of a battery voltage. SOLUTION: A fuel injection pump 10 feeds fuel to a fuel injection nozzle 24, according to electrification to an electromagnetic solenoid 20a of an electromagnetic spill valve 20 and stops feeding according to shut off of energizing. An electronic control unit 30 corrects energization starting timing, on the basis of the instantaneous voltage of a battery source and read-in calculation, when the electrification starting timing to the electromagnetic solenoid 20a is calculated.

10. 发明专利

JP2003322045A Calculating method for engine torque 有权
标题翻译：发动机扭矩计算方法
公开(公告)号：JP2003322045A
公开(公告)日：2003-11-14
申请号：JP2002126959
申请日：2002-04-26
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： AMANO NAOKI
IPC分类号： F02M47/00 , F02D29/02 , F02D41/02 , F02D41/04 , F02D41/14 , F02D41/18 , F02D41/38 , F02D45/00 , F02M55/02 , F02M59/34 , G06G7/70
CPC分类号： F02D41/18 , F02D41/3809 , F02D2200/0406 , F02D2200/0602 , F02D2200/1004 , F02D2200/1006
摘要： PROBLEM TO BE SOLVED: To calculate the engine torque with a higher accuracy than the case the fundamental engine torque is corrected simply with a specified parameter. SOLUTION: The fundamental engine torque TQb is calculated on the basis of the engine speed Ne and the fuel injection amount Q (Step 120), and the engine torque TQact is calculated by correcting the fundamental engine torque TQb using the specified parameter (suction air amount Q) influencing the engine torque (Step 170). The torque sensitivity factor K1 corresponding to the change amount of the engine torque TQact when the parameter changes in the unit amount is calculated on the basis of the engine speed Ne and fuel injection amount Q (Step 130), and the fundamental engine torque TQb is corrected with the obtained torque sensitivity factor K1 (Step 160). COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：以简单地用指定参数校正基本发动机扭矩的情况，以更高的精度计算发动机转矩。解决方案：基于发动机转速Ne和燃料喷射量Q计算基本发动机扭矩TQb（步骤120），并且通过使用指定的参数校正基本发动机转矩TQb来计算发动机转矩TQact（吸入空气量Q）影响发动机转矩（步骤170）。根据发动机转速Ne和燃料喷射量Q，计算参数单位量变化时的发动机转矩TQact的变化量对应的转矩灵敏度因子K1（步骤130），基本发动机转矩TQb为用获得的转矩灵敏度因子K1进行校正（步骤160）。版权所有（C）2004，JPO

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