• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A method of and apparatus for starting an air-compressing four-stroke cycle internal combustion engine, in which the air for the combustion process is preheated in the intake system or in chambers communicating with the intake system. The air conveying engine parts are, prior to the self-sustaining operation of the engine, heated by means of the preheated intake air, while the engine during the preheating operation is driven by means of separate power and the inlet and outlet valves are controlled in conformity with the two-stroke cycle so that each upward stroke of a piston provides an exhaust stroke and every downward stroke of a piston provides an intake stroke. The shift-over of the operation of the inlet and outlet valves from two-stroke cycle operation to four-stroke cycle operation and the admission of fuel into the cylinders are effected only when the air conveying engine parts and the air charge have reached a temperature sufficient for the start of the engine.
    公开号:SU847939A3
    申请号:SU782649252
    申请日:1978-08-16
    公开日:1981-07-15
    发明作者:НАЙТЦ Альфред
    申请人:Машиненфабрик Аугсбург-Нюрнберг Аг (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to mechanical engineering, in particular to engines! internal combustion, namely the launch of four-stroke internal combustion engines with compression ignition.
    Known method of starting a four-stroke internal combustion engine with compression ignition by moving the piston in the cylinder row inter- υ upper and lower dead points, preheating of intake air and fuel injected into the compressed air fl].
    There are known devices for implementing this method, comprising at least one cylinder with a piston, inlet and outlet valves with an actuator through a box of gas distribution cams installed on the camshaft 20 and an intake air heater [1].
    However, in these devices, starting the engine 25 takes a relatively long period of time.
    The purpose of the invention is to reduce startup time and increase its reliability.
    This goal is achieved by the fact that engine parts in contact with the intake air are additionally heated by suctioning heated air during each movement of the piston from top dead center to lower and displacing it with each movement of the piston in the opposite direction, then the temperature in the over-piston space is determined and compared it with a predetermined value sufficient to start, and if this value is exceeded, the air pre-heating is turned off, compress it when moving ii piston from the lower dead point to the upper for further work with the fuel-injection and expansion of the combustion products when the piston is moved in the opposite direction.
    The temperature in the above-piston space can be determined by measuring the temperature of the air introduced into it, or which is located there or removed from there, or by measuring the temperature of the walls of the parts forming the above-piston space.
    79 39
    In the device for implementing the proposed method, the engine camshaft is equipped with additional cams mounted on it at an angle of 180 ° relative to the gas distribution cams, and the device further comprises a mechanism for connecting the rocker arms to the gas distribution cams or simultaneously to the gas distribution cams and additional cams.
    The connection mechanism can be made in the form of spring-loaded movable elements, each of which is connected to one of the rocker arms.
    The connection mechanism can be made with the possibility of axial displacement of the spring-loaded movable; elements parallel to the camshaft axis.
    The drive of the connection mechanism can be made hydraulic or pneumatic or electric.
    The connecting mechanism can be placed next to the camshaft, parallel to it and the axis of the rocker arm.
    Additional cams may be axially displaceable.
    In FIG. 1 shows a valve control system, side view; in FIG. 2 is a section AA in FIG. 1, moreover, the rings are presented in various positions ^ in FIG. 3 - the same option.
    The device comprises at least one cylinder with a piston, an intake air heater, a head 1, a cylinder with inlet 2 and exhaust 3 valves, held in their end position by springs
    4. On the axis 5 with the possibility of angular and axial displacements in the bearings, rockers 6 are installed, which, with their curved sliding guide 7, are in contact with the cam 7 and the additional cam 9 mounted on. the camshaft 10 at an angle of 180 ° relative to the cam 8. In the hub of the rocker arm 6, a recess 11 is made, which includes the belt 12 of the sleeve 13, covering the cylinder 14, mounted in the wall 15 of the cylinder head 1 and serving as a guide for the sleeve 13. A blind hole 16 * is made in the end face of the sleeve 13, in which a compression spring 17 is mounted, resting with its free end on the wall 15 and guided by a pin 18. The cylinder 14 is provided with channels 19 for supplying and discharging a working fluid, for example, engine oil.
    Starting a four-stroke compression ignition internal combustion engine is carried out as follows.
    The engine is powered by a foreign source. In this case, the piston moves in the cylinder between the upper and lower dead points, and the intake air is preheated. Engine parts * in contact with the intake air are additionally heated by suctioning heated air during each movement of the piston from top dead center to bottom and displacing it with each movement of the piston in the opposite direction. This is achieved by (the camshaft 10 is equipped with additional cams 9, 15 mounted on it at an angle of 180 ° relative to the cam 8, and the device further comprises a mechanism for connecting the rocker arm 6 to the specified cams 8 and 9.
    2Q Moreover, at start-up, the connection mechanism shifts the rocker 6 in such a way that it interacts simultaneously with the cam 8 and cam 9. Then, the temperature in the supra-piston space is determined by measuring the temperature of the air introduced into it or from it or removed from it, or by measuring the temperature of the walls of the parts, forming the over-piston space, they are compared with a predetermined value sufficient to start, and if this value is exceeded, the air preheating is switched off.
    If the burner is used to preheat the intake air after it is turned off, it is recommended that the engine be turned a few revolutions in the previous mode to fill enough of the cylinder 40 with clean air.
    Further, acting on the connection mechanism by hydraulic, pneumatic or electrical means, the sprocket 6 is shifted, so that it ^ 5 interacts only with the cam 8.
    ’In this case, the suction air is compressed in the engine cylinder when the piston moves from the lower dead, ignition and combustion and expansion <0 of the combustion products when the piston moves in the opposite direction. Thus the engine. starts up.
    The present invention allows to reduce startup time and increase its reliability.
    权利要求:
    Claims (1)
    [1]
    In the device for implementing the proposed method, the engine camshaft is equipped with additional cams installed at an angle of 180 relative to the cams of the camshaft, and the device additionally contains a mechanism for connecting the cams to the cams or simultaneously to the cams. The connecting mechanism can be made in the form of spring-loaded moving elements, each of which is connected to one of the rocker arms. The connection mechanism can be configured to axially displace the spring-loaded movables; elements parallel to the camshaft axis. The drive of the connection mechanism may be hydraulic, pneumatic or electric. A connecting mechanism may be placed adjacent to the distributor ball, parallel to it and the osikoromysl. Additional cams may be axially displaceable; FIG. 1 shows a valve control system, side view; in fig. 2 shows section A-A in FIG. 1, and Kopowbicna is presented in different positions: in FIG. 3 - the same, option. The device contains at least one cylinder with a piston, an intake air heater, a head 1, a cylinder with an inlet 2 and an exhaust 3 valve. the springs 4 held in their end position are fixed on the axis 5 with the possibility of angular and axial displacements in bearings mounted rocker arms 6, which contact their camshaft 8 and additional cams 9 mounted on the curvilinear sliding guide 7. camshaft 10 at an angle of 180 to cam 8 of the gas limit. In the hub of the rocker arm b there is a recess 11 into which juice 12 of the sleeve 13 enters, cylinder includes a cylinder 14 fixed in the wall 15 of the cylinder head 1 and serving as a guide for sleeve 13. In the end side of the sleeve 13, there is a blind hole 16, in which a compression spring 17 is installed, of a opirgioza with a free end to the stack 15 and guided by a pin 18. The cylinder 14 is provided with channels 19 for water and removal of a working fluid, for example engine oil . The start of the four-stroke internal combustion engine with compression ignition is accomplished as follows. The engine is driven a; nh1sch outside external source. At .1 the piston moves in the cylinder between the upper and lower dead points, the intake air is preheated. Parts of the engine that are in contact with the intake air are additionally suppressed when the heated air sucks in each process of moving the piston from the top dead center to the bottom and displacing it with each movement of the piston in the opposite direction. This is achieved by the fact that the camshaft 10 is provided with additional cams 9 installed on it at an angle of 180 ° relative to the cams 8 of the gas distribution, and the device additionally contains a mechanism for connecting cams to these cams 8 and 9. At start-up, the connection mechanism shifts the casing 6 in such a way that it interacts simultaneously with the cam 8 and the cam 9. The temperature in the over-piston space is then determined by measuring the temperature of the temperature inputted there or located there or outputted ttuda air or by measuring the .peratury wall parts forming nadporshnevoe zanstvo simple, it is compared with a predetermined value sufficient to trigger, in the case of exceeding this value disables preheating air. In the case of using a burner to preheat the intake air after it has been turned off, it is recommended that the engine be turned a few turns as before to sufficiently fill the cylinder with clean air. Next, acting on the connection mechanism by hydraulic, pneumatic or electric means, displace the burner B so that it only interacts with the cam 8. At the same time, the compressed air is compressed in the engine cylinder as the piston moves away from the lower dead, its combustion and combustion when moving the piston in the opposite direction. Thus, the engine. runs. : The present invention allows for shorter startup times and improved reliability. Claim 1. Method for starting a four-stroke internal combustion engine with a new compression flame by moving the piston in the cylinder between the upper and lower dead points, preheating the intake air i &apos; fuel injection into the compressed air, characterized in that, in order to reduce the starting time and increase its reliability, engine parts in contact with the intake air, is worn by suction of heated air during each movement of the piston from the top dead center to the bottom it and displacing it with each piston movement in the opposite direction, then determine the temperature in the above piston station, compare it with the set value: sufficient start iT in case of exceeding this value Disconnect the air preheating, compress it when moving from the bottom dead points of 5GGprot in alternate direction 7 Method software P. 1 O T L and m “and C I due to the fact that the temperature is in dim tl and h and J Method according to p. bLL --p.osrr.jn eSr "rpa ° Jpii -b" is packed with extra cams, tanovlenii thereon at 180 tnositelno gazoraspredeeni cams, and the device further soerzhit mechanism connecting to the ate koroml- cams or dnovremenno gas distribution, and to the cams gazoraspreeleni additional cams. 5. The device according to claim 4, of which is connected with the fact that the connection mechanism is made in the form of spring-loaded moving elements, each of which is connected to one of the arms. Software device PP.4 and 5, O TL and h This is due to the fact that the connecting mechanism is configured to axially displace the spring-loaded moving elements parallel to the axis of the camshaft. 7 Device on PP. 4 and 5, about the fact that the drive of the connection mechanism is made hydraulically .. c.-, 8. The device according to claims. 4, which differs in that the drive of the connection mechanism is made pneumatically. 4 and e, which is characterized by the fact that the drive of the connection mechanism is made electrically. „“ 10. The device according to claim 4, of which there is a mechanism; the connection is placed Р «Я ° Pf °: by the distributor shaft, parallel to it and the axis of the yoke. 11. The device according to clause 4, of which is made with the possibility of axial displacement. Sources of information taken into account R 1. patent of Germany 1576017, cl. 46 from 31/16, published 1970.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU847939A3|1981-07-15|Method and device for start up of four-cycle internal combustion engine with compression ignition
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    US1143156A|1915-06-15|Self-starting engine.
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    SU826058A1|1981-05-05|Free-piston engine
    US722629A|1903-03-10|Internal-combustion engine.
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    同族专利:
    公开号 | 公开日
    RO75485A|1980-11-30|
    HU177669B|1981-11-28|
    DE2737601A1|1979-03-01|
    GB2006328A|1979-05-02|
    GB2006328B|1982-03-03|
    IT1097607B|1985-08-31|
    SE7808778L|1979-03-23|
    IT7826574D0|1978-08-08|
    DD138348A1|1979-10-24|
    US4353334A|1982-10-12|
    DE2737601C2|1983-01-27|
    FR2406087A1|1979-05-11|
    JPS5489135A|1979-07-14|
    IN150220B|1982-08-14|
    引用文献:
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    US2297376A|1939-05-01|1942-09-29|Clinton L Walker|Internal combustion engine|
    GB764941A|1954-02-16|1957-01-02|Heinrich Christiansen|Improvements in or relating to methods of and arrangements for facilitating starting internal combustion engines|
    US2823655A|1956-12-13|1958-02-18|Ford Motor Co|Valve timing mechanism|
    US3367312A|1966-01-28|1968-02-06|White Motor Corp|Engine braking system|
    JPS4848008U|1971-10-09|1973-06-23|FR2480354B1|1980-04-11|1982-04-30|Renault|
    FR2493915B1|1980-11-13|1985-12-06|Renault|VARIABLE DISTRIBUTION DEVICE FOR INTERNAL COMBUSTION ENGINE|
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    US4535732A|1983-06-29|1985-08-20|Honda Giken Kogyo Kabushiki Kaisha|Valve disabling device for internal combustion engines|
    JPH0550562B2|1983-07-27|1993-07-29|Honda Motor Co Ltd|
    FR2560645B1|1984-03-02|1988-04-08|Alsacienne Constr Meca|METHOD FOR LOW LOAD STARTING AND RUNNING OF A DIESEL ENGINE AND DIESEL ENGINE COMPRISING APPLICATION OF THIS METHOD|
    DE3523531C2|1984-07-02|1989-08-24|Honda Giken Kogyo K.K., Tokio/Tokyo, Jp|
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    DE102011101871B4|2011-05-16|2014-09-25|Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr|Valve train for internal combustion engines for actuating gas exchange valves|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE2737601A|DE2737601C2|1977-08-20|1977-08-20|Device for starting an air-compressing four-stroke internal combustion engine|
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