公开(公告)号：DE102017006514A1

公开(公告)日：2018-01-18

申请号：DE102017006514

申请日：2017-07-10

Applicant: MAZDA MOTOR

Inventor： YAMAGUCHI TAKAYUKI ,  TANAKA TAKASHI ,  MATSUE KOTA ,  HAYASHIBARA HIROSHI ,  TOMITA YOSHIAKI ,  YAMADA KAORU ,  TETSUNO MASAYUKI ,  IKEDA DAISHI ,  HIRASAWA KAZUNORI ,  KANNO MASANOBU

IPC: F01N9/00 ,  F01N3/08 ,  F01N3/10 ,  F02D41/02

Abstract: Ein Abgasemissions-Regel- bzw. -Steuersystem eines Motors wird zur Verfügung gestellt, welches einen NOx Katalysator beinhaltet, welcher in einem Auslassdurchtritt angeordnet ist, für ein Speichern von NOx innerhalb des Abgases, wenn ein Luft-Kraftstoff-Verhältnis des Abgases mager ist, und für ein Reduzieren des gespeicherten NOx, wenn das Luft-Kraftstoff-Verhältnis ungefähr stöchiometrisch oder reich ist. Ein Prozessor führt ein NOx Reduktions-Regel- bzw. -Steuermodul für ein Durchführen, wenn die gespeicherte Menge an NOx eine gegebene Menge überschreitet, einer NOx Reduktionsregelung bzw. -steuerung aus, in welcher eine Kraftstoffeinspritzeinrichtung eine Nacheinspritzung von Kraftstoff durchführt, um kontinuierlich das Luft-Kraftstoff-Verhältnis auf ein Zielverhältnis derart zu regeln bzw. zu steuern, dass das gespeicherte NOx reduziert wird, um unter einer gegebenen Menge zu sein, wobei das Ziel-Luft-Kraftstoff-Verhältnis ein Verhältnis ist, bei welchem das gespeicherte NOx reduzierbar ist, wobei die Nacheinspritzung bewirkt, dass der eingespritzte Kraftstoff im Inneren eines Zylinders verbrennt, wobei die Ausführung der Regelung bzw. Steuerung erlaubt wird, wenn eine Motorlast innerhalb eines Bereichs mittlerer Last liegt.

公开(公告)号：JP2004116492A

公开(公告)日：2004-04-15

申请号：JP2002284961

申请日：2002-09-30

Applicant: Mazda Motor Corp ,  マツダ株式会社

Inventor： SHIMIZU MAKOTO ,  MITSUI SHUJI ,  MUKAI MANABU ,  YAMADA KAORU

IPC: F02B53/10 ,  F02D9/02 ,  F02D41/04 ,  F02D41/34 ,  F02D45/00 ,  F02M69/00

CPC classification number: Y02T10/17

Abstract: PROBLEM TO BE SOLVED: To improve combustibility of a mixture by optimizing fuel distribution in working chambers 5 to efficiently lead fuel into the working chambers 5 without sticking the fuel to a side face or the like of a rotor 6 in a rotary engine 1 wherein the working chambers 5, 5, 5 on the outer peripheral side carry out each stroke of intake, compression, expansion and exhaust in sequence while moving circumferentially following the rotation of rotors 6 accommodated in housings 2, 3. SOLUTION: First and second intake ports 11, 13 opened to side housings 3, 3 on both sides of the rotor 6 are provided for every cylinder 4. When the total injection quantity Q corresponding to the operating state of the engine 1 is larger than the first set quantity Q1, fuel is distributed to three injectors 25, 26, 32 to basically lead approximately the same quantity of fuel into the working chambers 5 through the first and second intake ports 11, 13, and the injection operation of fuel by each injector is performed in a prescribed suitable injection period. When fuel distribution to the secondary injector 32 reaches the quantity which cannot be injected within the suitable injection period, the fuel is injected beyond the suitable injection period. COPYRIGHT: (C)2004,JPO

公开(公告)号：JPH05180025A

公开(公告)日：1993-07-20

申请号：JP34621991

申请日：1991-12-27

Applicant: MAZDA MOTOR

Inventor： NAKABAYASHI TAKASHI ,  YAMADA KAORU ,  WADA INOSUKE ,  OKINO YOSHINORI

IPC: F02D29/02

Abstract: PURPOSE:To enhance the responsiveness to the closing operation of a second throttle valve which is electrically operated, when traction control is carried out by closing the second throttle valve. CONSTITUTION:In addition to primary and secondary throttle valves 8a, 8b associated with an accelerator pedal, an electrical throttle valve 15 is provided. Upon occurrence of a first slip, traction control is carried out, and after the slip is suppressed by this control, the electrical throttle valve 15 is changed by one and the same opening degree, following the operation of the primary throttle valve 8a for a set time. Accordingly, upon occurrence of a slip subsequent to the first slip, the opening degree range of the electrical throttle valve 15 in which the opening degree of the throttle valve 15 is changed to a value at which the slip is effectively restrained, is decreased. As a result, the opening degree of the electrical throttle valve 15 is quickly changed to an opening degree at which the slip is effectively restrained, thereby it is possible to surely restrain or suppress a slip in a short time.

公开(公告)号：JPH01187320A

公开(公告)日：1989-07-26

申请号：JP925188

申请日：1988-01-19

Applicant: MAZDA MOTOR

Inventor： SHIBATA MASANORI ,  HASHIMOTO TAKAYOSHI ,  YAMADA KAORU ,  MUKAI MANABU

IPC: F02B37/18 ,  F02B37/12

Abstract: PURPOSE:To restrain the occurrence of knocking by providing bypass passages bypassing a turbine in confrontation with respective cylinders in such a manner that the resistance of a bypass passage against a cylinder at which knocking is liable to occur may be made small. CONSTITUTION:At a two cylinder rotary piston engine, a turbo supercharger 8 is interveniently furnished at part of the way of an exhaust passage 10 from respective cylinders 1F, 1R. This exhaust passage 10 forms the portion of the upper stream side of a turbine 8a into two independent exhaust passages 13f, 13r independent by respective cylinders. Also, two bypass passages 14f, 14r which bypass the turbine 8a and connect the scroll portions of respective independent exhaust passages 13f, 13r with the exhaust passage 10 on the lower side, are provided, and both passages 14f, 14r are opened/closed by means of a common waste gate valve 15. And in this instance, the bypass passage 14r for the cylinder 1R at which knocking is liable to occur, out of bypass passages 14f, 14r, is made larger at its passage diameter, and is made smaller at its passage resistance.

公开(公告)号：JPS63246446A

公开(公告)日：1988-10-13

申请号：JP8001387

申请日：1987-04-01

Applicant: MAZDA MOTOR

Inventor： NOGUCHI NAOYUKI ,  MAKIMOTO SEIJI ,  YAMADA KAORU ,  MUKAI MANABU

IPC: F02B37/12 ,  F02B39/16 ,  F02D45/00

Abstract: PURPOSE:To suppress the air fuel ratio of the intake air from becoming over- lean by reducing the maximum filling quantity of the intake air to an engine when the fuel discharge quantity from fuel pumps is decreased. CONSTITUTION:Under a high load of an engine 1 judged by a control unit 32, when the fuel discharge quantity is decreased than the preset value due to the failure or the like of a fuel pump 26 or 27, it is detected by a pressure sensor 35. An electromagnetic clutch mechanism 14 is turned off by the operation of the control unit 32 fed with the output signal of this detecting means, a supercharger 15 is stopped operating, and the maximum filling quantity of the intake air filled in the operation chamber 4 of the engine 1 is corrected to be decreased. That is, as the fuel discharge quantity of the fuel pump 26 or 27 is decreased, the maximum filling quantity of the intake air is reduced, thus even if the air fuel ratio of the intake air tends to become over-lean under a high load of the engine 1, it is suppressed by the decreasing correction of the filling quantity of the intake air.

公开(公告)号：JPS6388222A

公开(公告)日：1988-04-19

申请号：JP23517386

申请日：1986-10-01

Applicant: MAZDA MOTOR

Inventor： OKIMOTO HARUO ,  TAJIMA SEIJI ,  HASHIMOTO TAKAYOSHI ,  YAMADA KAORU

IPC: F02B27/02 ,  F02B53/08

Abstract: PURPOSE:To aim at effective utilization of the dynamic effect of intake air over a wide engine-speed range by providing, on the central part in the axial direction of a rotary valve, intake passages for the low-speed operation of both cylinders respectively, and then providing, on both ends in the axial direction of the valve, intake passages for the high-speed operation of both cylinders respectively. CONSTITUTION:In the low engine-speed range, at a point of time, where the intake air drawn in through the ends opening parts 71, 72 of a rotary valve 7 reaches the central part in the axial direction of the valve, the intake air is caused to flow into intake passages 121, 122 for the low-speed operation. Hereby, the length of the intake passages from a surge tank through a valve 7 and the intake passages 121, 122 for the low-speed operation to a combustion chamber reaches a required length, and an excellent dynamic effect of intake air can be obtained in a low engine-speed range. While, when the intake air is supplied by means of intake passages 131, 132 for the high-speed operation to the combustion chamber, the intake air drawn in through the ends opening parts 71, 72 of the valve 7 is caused to flow into the intake passages 131, 132 on both ends thereof. And therefore, the substantial length of the intake passages for the high-speed operation is shortened as required, and a dynamic effect of intake air can be obtained excellently.

公开(公告)号：JPS6371521A

公开(公告)日：1988-03-31

申请号：JP21618786

申请日：1986-09-13

Applicant: MAZDA MOTOR

Inventor： SHIMODA ITSUKI ,  HASHIMOTO TAKAYOSHI ,  YAMADA KAORU ,  OKIMOTO HARUO

IPC: F02B29/08 ,  F02B53/06

Abstract: PURPOSE:To achieve the enhancement in acceleration characteristics and an engine brake effect, by decreasing the operating region, in which the communication between cylinders for reducing pumping loss is carried out, at the time of acceleration or deceleration. CONSTITUTION:On the respective side surfaces of the front and rear sides of intermediate housings 4 of a rotary piston engine, communicating ports 15f, 15r are formed so as to be positioned slightly on the leading side looking from respective intake ports 6f, 6r in the rotating directions of rotors 2f, 2r. In the intermediate position of a communicating passage 16 communicating both communicating ports 15f and 15r, a rotary type control valve 17 being controlled to be opened or closed via a control circuit 19 and a control mechanism CR is provided. The control circuit 19 sets the target opening of the control valve 17 on the basis of the detected values from an air flowmeter 9 and a revolution sensor 34, and when an acceleration or deceleration is detected on the basis of the change in the throttle opening, it decreases the operating region in which the control valve 17 is opened.

公开(公告)号：JPS635132A

公开(公告)日：1988-01-11

申请号：JP14770186

申请日：1986-06-23

Applicant: MAZDA MOTOR

Inventor： YAMAMOTO MASARU ,  KURONISHI KIYOSHI ,  YAMADA KAORU

IPC: F02D41/14 ,  F02D41/00 ,  F02D41/02

Abstract: PURPOSE:To improve contrallability in two running modes, by a method wherein controllability in feedback control of an airfuel ratio during reduced number of cylinders running is set to a value different from that during total cylinder running. CONSTITUTION:Detecting values from an airflow meter 4, an intake air tempera ture sensor 5, a throttle sensor 7, an O2 sensor 11, a water temperature sensor 12, and a number of revolutions sensor 13 are inputted to an engine control unit 15, Based on the detecting values, a number of cylinders reducing means 101 closes a shutter valve 9, shutting off the feed of air to first-third cylinders through an on-off means 10 during low load running, and stops the feed of fuel to the cylinders to perform reduced number of cylinders running, An air-fuel ratio control means 102 computes a fundamental fuel injection amount from the number of revolutions and an intake air amount, and performs feedback control of an air-fuel ratio based on a detecting value from the O2 sensor 11 when a feedback control condition is established. Controllability of an air-fuel ratio during reduced number of cylinders running is set to a value different from that during total cylinder running.

公开(公告)号：JPS63215831A

公开(公告)日：1988-09-08

申请号：JP5093587

申请日：1987-03-05

Applicant: MAZDA MOTOR

Inventor： HASHIMOTO TAKAYOSHI ,  YAMADA KAORU ,  OKIMOTO HARUO ,  TAJIMA SEIJI

IPC: F02B39/12 ,  F02B39/16

Abstract: PURPOSE:To improve the operability of an engine in a low load operation range by driving a mechanical type supercharger in the predetermined low load engine operation range and alleviating an engine load due to the supercharger when an engine abnormality is detected in the predetermined low load range. CONSTITUTION:An engine has a mechanical type supercharger 'A' driven with an engine output shaft and a clutch means 'B' for cutting off a drive connection between the supercharger 'A' and the engine output shaft. In this case, there is provided a means 'C' for driving the supercharger 'A' in the lower load engine operation range. Also, another means 'D' is provided for detecting any abnormal condition of the engine in the predetermined low load operation range. Furthermore, another means 'E' is provided for alleviating a load on the engine due to the supercharger 'A', when the means 'D' detects the abnormal condition of the engine. According to the aforesaid constitution, it becomes possible to evade the output drop and the like of the engine due to the driving of the supercharger 'A' in the predetermined low load operation range, and to operate the supercharger 'A' in an operation range at a load as low as practicable.

公开(公告)号：JPS63208634A

公开(公告)日：1988-08-30

申请号：JP4067687

申请日：1987-02-24

Applicant: MAZDA MOTOR

Inventor： YAMADA KAORU ,  HASHIMOTO TAKAYOSHI ,  OKIMOTO HARUO ,  TAJIMA SEIJI

IPC: F02B33/00 ,  F01L13/00 ,  F01N3/22 ,  F02D13/00 ,  F02D13/02 ,  F02D17/02 ,  F02D23/00 ,  F02D45/00 ,  F02P5/15

Abstract: PURPOSE:To obtain an engine output characteristic suited for requirement, by switching the supercharge characteristic of a supercharger to plural kinds and controlling an engine control element to be corrected in accordance with this switching of the kind so that the supercharge characteristic most suitably matches with the engine output characteristic. CONSTITUTION:A supercharger 9, driven by an output shaft of an engine 1, and a memory means 61, which stores the supercharge characteristic of the supercharger 9 in memory to be previously set in plural kinds, are provided. While a selecting means 62, which selects the supercharge characteristic stored in the memory means 61, and a supercharger control means 63, which controls the supercharger 9 on the basis of the supercharge characteristic selected by the selecting means 62, are provided. And an engine control means 64, which controls an engine control element to be corrected in accordance with switching of the supercharge characteristic by the selecting means 62, is provided. That is, switching the supercharge characteristic to plural kinds and controlling the engine control element to be corrected in accordance with this switching, the supercharge characteristic most suitably matches with the engine output characteristic.