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1. 发明专利

JPH0763104A FUEL INJECTION CONTROL DEVICE 失效
公开(公告)号：JPH0763104A
公开(公告)日：1995-03-07
申请号：JP20780593
申请日：1993-08-23
申请人： NIPPON DENSO CO
发明人： OSHIMA KEIJI , NONOMURA TADASHI
IPC分类号： F02D41/38 , F02M45/04
摘要： PURPOSE:To provide a fuel injection control device which can control any correction for entire fuel injection quantity like an uneven quantity correction and also can always, secure plural times injection like a pilot injection, even this correction control is effected. CONSTITUTION:An uneven quantity correction quantity DELTAQ for controlling the uneven quantity correction between cylinders and total injection quantity QFIN are calculated (S100-S300) and both amounts QFIN and DELTAQ are added together (S400). When a pilot injection is carried out, at first, a pilot injection quantity QP is secured for the total injection amount QFIN after correction (S600) and thereafter, a main injection quantity QM is calculated (S700) and outputted as a control signal (S800). Consequently, concerning the fuel injection quantity as a whole, the uneven quantity correction is reflected and the pilot injection and the main injection are carried out under the state of securing the pilot injection quantity surely and the uneven quantity correction between cylinders can be always compatible with the pilot injection.

2. 发明专利

JPH0693914A ACCUMULATIVE FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH0693914A
公开(公告)日：1994-04-05
申请号：JP24345192
申请日：1992-09-11
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： KAWASAKI HIDEO , NONOMURA TADASHI , ITATSU TOSHIRO
IPC分类号： F02D41/04 , F02D41/08 , F02D41/16 , F02D41/38 , F02M47/00
摘要： PURPOSE:To stabilize a combustion condition by calculating an objective com mon rail pressure from an always stabilized objective engine speed during idle of an engine, and thereby stabilizing an actual common rail pressure. CONSTITUTION:Operation of an injection controlling solenoid valve 3 and a high-pressure pumping valve of a discharge rate control device 1 is controlled according to control signals output from an electronic control unit(ECU) 11. An actual engine speed NE and an accelerator opening thetaAC respectively detected by an engine speed sensor 12 and an accelerator opening sensor 13 are input to an objective injection amount computation circuit 20 inside the ECU 11, and a target injection amount QFIN' is calculated there. In addition, an idling condition judgment circuit 28 is provided. When the idling condition is judged, an objective common rail pressure PFIN is calculated through an objective engine speed NEF of the engine. When other conditions are judged, the target common rail pressure PFIN is calculated from the actual engine speed NE and the objective injection amount QFIN'. An idle speed can be set low, accordingly.

3. 发明专利

JPS63186946A FUEL INJECTION QUANTITY CONTROL DEVICE FOR DIESEL ENGINE 失效
公开(公告)号：JPS63186946A
公开(公告)日：1988-08-02
申请号：JP12202887
申请日：1987-05-19
申请人： NIPPON DENSO CO
发明人： NONOMURA TADASHI , MURAYAMA FUMIAKI , YAMAMOTO HIROSHI , BAN MITSURU , TANAKA YASUSHI , SUGIMOTO HIDEO , SHIOZAKI MAKOTO , MORI HOMARE , SHIRAKI KATSUYOSHI
IPC分类号： F02D41/40 , F02D41/00
摘要： PURPOSE:To prevent the abnormal action of a fuel injection quantity regulating member, and to prevent the hunting of an engine, by correcting at least one of the integral, proportional, and differential constants in a feedback system in correspondence to the width of change in the position of the regulating member, and further by maintaining it for a prescribed time. CONSTITUTION:A microcomputer 1 calculates the optimum injection quantity of fuel on the basis of the signals from various sensors which detect the operating conditions of an engine, and sends a command value to a servo amplifier 3 via a D/A converter 2. Then, the servo amplifier 3 drives a linear solenoid 5, so that the error in the actual position to a target position can be corrected, on the basis of the target position signal Vs from the D/A converter 2 and the actual position signal Vp from a rack position sensor 7. As a result, the linear solenoid 5 generates an attracting force corresponding to the current value, and drives a rack 6 as a fuel regulating member. In this case, control constants are corrected in correspondence to the width of change in the position of the rack 6, and further they are maintained for a prescribed time, so that the abnormal action of the rack 6 can be prevented.

4. 发明专利

JPS59170463A Fuel injection valve 失效
标题翻译：燃油喷射阀
公开(公告)号：JPS59170463A
公开(公告)日：1984-09-26
申请号：JP4400783
申请日：1983-03-16
申请人： Nippon Denso Co Ltd
发明人： NONOMURA TADASHI , TOUJIYOU SHIGEKI
IPC分类号： F02M45/08 , F02M61/10 , F02M61/20
CPC分类号： F02M45/083
摘要： PURPOSE:To minimize the size of the second spring by providing a push rod to be slided via a rod holder inside a nozzle holder to operate both of the first and the second springs at the time of main injection for reducing the weight of inertia for smooth operation. CONSTITUTION:When a fuel pressure reaches to an initial valve-opening pressure P1, a needle valve 6 goes up overpowering the first spring 10 and stops once when a pushing body 8 touches the lower end face 13a of a push rod. Here, an injection ratio is kept small since an opening volume of an injection hole 7 is small. Then, if the fuel pressure reaches P2, the pushing body 8 pushes up a push rod 13 against the second spring 11 to enlarge the opening are to increase the injection ratio. Here, the needle valve 6 receives the pushing force from both of the first and the second springs 10 and 11 to fall down until the fuel pressure goes down from P2 to P3. When separated from the rod 13, the pushing body 8 receives the pushing force only from the first spring 10 to fall down and close the valve. This construction permits to operate the needle valve smoothly only by lifting operation of the rod 13 and minimize the size of the second spring.
摘要翻译：目的：为了最小化第二弹簧的尺寸，通过提供一个推杆，该推杆经由喷嘴座内的杆夹持器滑动，以在主喷射时操作第一和第二弹簧两者，以减少惯性的平均重量操作。构成：当燃料压力达到初始开阀压力P1时，针阀6向上推压第一弹簧10，并且当推动体8接触推杆的下端面13a时停止一次。这里，由于喷射孔7的开口量小，因此喷射比保持较小。然后，如果燃料压力达到P2，则推动体8将推杆13向上推动抵靠第二弹簧11，以使开口增大以增加喷射比。这里，针阀6接受来自第一弹簧10和第二弹簧11的推压力，直到燃料压力从P2下降到P3为止。当与杆13分离时，推动体8仅接收来自第一弹簧10的推力，以便下降并关闭阀。这种结构允许通过提升杆13的操作并使第二弹簧的尺寸最小化来平稳地操作针阀。

5. 发明专利

JPH05113167A CONTROL DEVICE FOR ENGINE 失效
公开(公告)号：JPH05113167A
公开(公告)日：1993-05-07
申请号：JP27549491
申请日：1991-10-23
申请人： NIPPON DENSO CO
发明人： OSHIMA KEIJI , NONOMURA TADASHI
IPC分类号： F02D19/08 , F02B3/06 , F02D45/00 , F02P19/02
摘要： PURPOSE:To provide a control device for engine which can be effectively applied to a diesel engine using, for example, alcohol fuel, improved in the fuel assisting effects of glow plugs at the time of rapid acceleration. CONSTITUTION:The control device for engine is directed to be used in an engine 11 provided, at its air cylinders, with glow plugs 121 to 124, and is arranged such that a heating current supplied to the glow plugs is interrupted or passed therethrough by a switch circuit 15 driven by an electronic control unit 14. This on/off duty ratio is set in corresponding relation to the fuel injection amount and the number of engine revolutions. When a state of rapid increase in the amount of step-in of an accelerator 19 is sensed by an accelerator opening sensor 20, an acceleration mode is set. During a peak hold period determined in corresponding relation to entry into the mentioned acceleration mode, the engine is set to an acceleration mode duty Dg2 added with a duty Da corresponding to an amount of change in the detected value of the accelerator opening sensor, to improve the ignitibility of the increased fuel.

6. 发明专利

JPH0526948B2 失效
公开(公告)号：JPH0526948B2
公开(公告)日：1993-04-19
申请号：JP2328385
申请日：1985-02-07
申请人： NIPPON DENSO CO
发明人： YAMAGUCHI TAKASHI , NONOMURA TADASHI
IPC分类号： F02M45/08 , F02M45/00 , F02M61/10

7. 发明专利

JPH03253742A FUEL INJECTION CONTROL DEVICE 失效
公开(公告)号：JPH03253742A
公开(公告)日：1991-11-12
申请号：JP5324390
申请日：1990-03-05
申请人： NIPPON DENSO CO
发明人： NONOMURA TADASHI , KOSAKA TOMOJI
IPC分类号： F02D41/22 , F02B3/06 , F02D1/02 , F02D45/00
摘要： PURPOSE:To precisely and properly stop fuel injection at the time of an abnormality by driving a fuel quantity adjusting member so as to set the fuel injection quantity to nearly zero when the fuel quantity adjusting member is in an offset abnormal state to cause an increase of the fuel injection quantity. CONSTITUTION:The fuel injection quantity for a Diesel engine is adjusted by an injecting means 1 in response to the action of a fuel quantity adjusting member, and the fuel quantity adjusting member is driven by a driving means 2. The driving state of a vehicle is detected by the first detecting means 3, and the driving means 2 is controlled by a control means 4 in response to the detected result. The action of the fuel quantity adjusting member is detected by the second detecting means 5, and a judging means judges whether the action of the fuel quantity adjusting member is in an offset abnormal state to cause an increase of the fuel injection quantity from the desired action state in response to this detected result. When it is judged to be in the abnormal state, the control means 4 controls the driving means 2 to set the fuel injection quantity to nearly zero.

8. 发明专利

JPH01159442A BLACK SMOKE PREVENTER FOR DIESEL ENGINE 失效
公开(公告)号：JPH01159442A
公开(公告)日：1989-06-22
申请号：JP31837587
申请日：1987-12-16
申请人： NIPPON DENSO CO
发明人： YANO KENZO , NONOMURA TADASHI
IPC分类号： F02D41/10 , F02B3/06 , F02D41/00 , F02D41/40
摘要： PURPOSE:To check an initial excess injection quantity by detecting such a case as the time of sudden acceleration involving intentional operation by an operator, while applying a proper filter to this accelerator operated variable, and operating the injection quantity as an artificial accelerator operated variable from the operational standpoint. CONSTITUTION:In this device, there are provided with a rack position sensor 2b, an operation detecting means detecting each operation of various operating levers 5, and accelerator sensor 7 detecting the opening of an accelerator lever and an engine speed sensor 8, and each detection signal out of these sensors is inputted into a governor controller 6. First, an initial valve of an accelerator filter is determined out of engine speed and injection quantity prior to a point of time rushed into a transient state. In addition, an accelerator operated variable before when rushed into the transient state is added to the said initial value, finding the added value. Afterward, a correction factor determined by a speed upping rate ad an accelerator filter integral quantity are multiplied at an optional period, and the multiplied value is added to the said added value, finding an internal pseudo-accelerator operated value, and thus an injection pump 2 is controlled.

9. 发明专利

JPH0693917A ELECTRONIC CONTROLLED INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH0693917A
公开(公告)日：1994-04-05
申请号：JP24340592
申请日：1992-09-11
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： NONOMURA TADASHI , TAKAHASHI TAKASHI
IPC分类号： F02D41/06 , F02D41/36 , F02D45/00
摘要： PURPOSE:To improve startability of an electronic controlled injection device for an internal combustion engine. CONSTITUTION:An electronic controlled injection device for an internal combustion engine wherein injection sequence among engine cylinders is previously determined has an engine speed sensor 12 which is composed of a plurality of pulses and two cutout pulses by 360 degrees of crank angle at the rotation of the crank angle of 720 degrees of the engine. In addition, a cylinder judgement sensor 13 is provided for generating one pulse at the rotation of the crank angle of 720 degrees of the engine, and simultaneously generating any of the two cutout pulses. A cylinder judgment part 17 is provided for judging the engine cylinder for executing fuel injection based on the fact that the cylinder judgement pulse signal is present or not at the time of generating the cutout pulse signal.

10. 发明专利

JPH0666191A ACCUMULATOR FUEL INJECTION DEVICE 失效
公开(公告)号：JPH0666191A
公开(公告)日：1994-03-08
申请号：JP22286392
申请日：1992-08-21
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： NONOMURA TADASHI , TSUZUKI NAOYUKI
IPC分类号： F02D41/04 , F02D41/08 , F02D41/38 , F02D45/00 , F02M47/00
摘要： PURPOSE:To provide an accumulator fuel injection device which can correct the sensor installation error. CONSTITUTION:Into an internal combustion engine 201, fuel is injected from a plurality of injection valves 202a-202f. Fuel is pumped up from a tank 208 by a low pressure pump 209, and boosted by a high pressure pump 207, and supplied into a common rail 203 on which the fuel injection valve is installed. With an ECU 214, a cylinder discriminating sensor 212 and a revolution sensor 213 are connected, and in an idling state, the installation angle of the revolution sensor is learned, and each valve opening timing of the solenoid valves 204a-204f for fuel injection control which is determined on the basis of the outputs of the cylinder discriminating sensor and the revolution sensor 213 is corrected.

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