摘要:
A balance system (500) and method for balancing piston forces with a single cylinder internal combustion engine (100) are disclosed. The balance system (500) includes a crankshaft (220), a counterbalance assembly (445) and a groove (610). The crankshaft (220) includes a crankshaft portion (510), a crank arm (530), a crank pin (520), and an eccentric flange (550) adjacent to the crank arm (530). The counterbalance assembly (445) has a counterbalancing mass portion (570) and a coupling arm (580) that are fixed with respect to one another, and a pin (600) that protrudes from a side of the counterbalancing mass portion (570). The eccentric flange (550) supports the coupling arm (530). The groove (610) is capable of receiving the pin (600); where the pin (600) is capable of sliding along the groove (610) and also rotating within groove (610), so that the counterbalance assembly (445) is capable of rotating while moving toward and away from the crankshaft (220).
摘要:
An internal combustion engine includes one or more pistons (3) connected to a common crankshaft (4), a balancer shaft (10) connected to the crankshaft (4) to be rotated thereby at the same speed as the crankshaft (4) but in the opposite sense, the balancer shaft (10) carrying mutually offset eccentric weights (14) at its ends and an integrated starter generator unit (26) including a stator (27) and a rotor (23). The rotor (23) is mounted to rotate about the axis of the balancer shaft (10) and is connected to the balancer shaft (10) by step up gearing (18, 20, 22) such that the rotor (23) rotates in the same sense as the balancer shaft (10) but at a substantially greater speed.
摘要:
A noise suppressing mechanism for balance gear system of an engine crankshaft is disclosed. The balance gear system includes a primary gear, a secondary gear, and a torsional spring and is fit on a balance shaft. The noise suppressing mechanism includes a circular flange formed on the primary gear and the secondary gear forms a central bore rotatably fit over the circular flange for free rotation about the circular flange with respect to the primary gear. The torsional spring is arranged between the primary and secondary gears. The primary gear forming a securing hole in which a stem section of a limiting pin is received and fixed. The secondary gear forms a through hole in which a head section of the limiting pin is accommodated with a gap formed between the head section and an inside diameter of the through hole. The gap allows for a limited angular shift of the secondary gear with respect to the primary gear. Such an arrangement provides a noise suppressing mechanism having less number of parts and being ready to assemble.
摘要:
A scooter type vehicle provides a pair of right and left frame members (202,203) in the interior of a vehicle body cover so as to extend substantially horizontally between a head pipe (201) and the front end of a seat. Right and left footrest plates (215) are provided outside on the right and left of the vehicle body cover. An engine is provided between the right and left frame members (202,203) with the cylinder axis of the cylinder block being provided so as to extend longitudinally, and the center axis (12d) of a crankshaft is provided so as to extend laterally and to be located above the upper surfaces of the right and left footrest plates (215) as seen in a side view. A balancer shaft is located below the crankshaft, and the crankshaft and the balancer shaft are sandwiched and supported between the upper and lower case halves with their center axes being located on the joining surface.
摘要:
An internal combustion engine has a crankcase, a crankshaft, first and second crankshaft bearings, first and second pistons, first and second piston connecting rods for connecting the first and second pistons to the crankshaft. A mass-balancing system has a counterweight connecting rod pivotally connected to the crankshaft and a counterweight connected to the counterweight connecting rod. The first piston connecting rod is disposed on a first side of the mass-balancing system and adjacent to the mass-balancing system along the crankshaft axis. The second piston connecting rod being is on a second side opposite the first side of the mass-balancing system and adjacent to the mass-balancing system along the crankshaft axis. The first crankshaft bearing is disposed between the first piston connecting rod and the counterweight along the crankshaft axis and the second crankshaft bearing is disposed between the second piston connecting rod and the counterweight along the crankshaft axis.
摘要:
L'invention propose un système d'équilibrage d'un moteur à combustion (11) du type comportant deux arbres d'équilibrage (24,32) des vibrations du moteur (11) et des moyens d'entraînement en rotation en sens opposés des deux arbres d'équilibrage (24,32) par l'intermédiaire d'un équipement auxiliaire (10) du moteur (11) ; l'équipement auxiliaire comporte un arbre d'entrée (20) qui est entraîné en rotation par le vilebrequin (12) du moteur à combustion (11), et qui entraîne deux arbres de sortie (22,30) de l'équipement auxiliaire en sens opposés et dont un premier arbre de sortie (22) entraîne en rotation un premier arbre d'équilibrage (24) du moteur (11), et caractérisé en ce que le second arbre de sortie (30) de l'équipement auxiliaire entraîne en rotation le deuxième arbre d'équilibrage (32) dans un sens opposé au sens de rotation du premier arbre d'équilibrage (24).
摘要:
A balancer device (15) for an engine (100) includes a housing (20), a pair of balancer shafts (40, 50) rotatably supported by means of at least a bearing member (26, 27) provided in the housing, a pair of balancer weights (43, 53) each balancer weight eccentrically provided at an outer circumferential surface of each balancer shaft, and a pair of gears (41, 51) each gear provided at each balancer shaft. The housing is formed with a through hole (20b) at a side wall (20a) thereof, each balancer shaft is provided with each balancer weight at an end thereof, the balancer weight being placed at a through hole side relative to the bearing member which supports the balancer shaft, and an end portion (42a) of the balancer shaft extends into the through hole along the axis of the balancer shaft to restrict a fluid communicating therethrough.
摘要:
Balance shaft assemblies are used in internal combustion engines to dampen primary and second order inertia forces. Known balance shaft assemblies typically require precision manufacturing and a rigid frame or housing. A balance shaft assembly (1) in accordance with this invention provides a low cost and less complex solution to engine balancing. The balance shaft assembly (1) includes an elongate housing (2) having a front end and a rear end, a balance shaft (5) which is rotatably supported between a front end bearing (6), a rear end bearing (7) and an intermediate bearing (12)in the housing (2). The housing (2) is transversely flexible relative to the balance shaft (5) to accommodate misalignment of the intermediate bearing (12) relative to the front and rear end bearings (6, 7). Consequently, the balance shaft assembly (1) can be less complicated and manufactured at a lower cost than known balance shaft assemblies.
摘要:
[Problem] To improve a degree of freedom in designing an engine, improve an acceleration feeling and make a driving sense extremely good as well as to make the engine compact. [Means for Resolution] A two-plane type crankshaft 3 is provided. The weight of crank webs for the respective cylinders is divided between left and right half webs (1a and 1b to 24a and 24b) and balance ratios k L and k R of the half webs for the respective cylinders are set so as to be (k L - 0.25) · (0.25 - k R ) ≅ D R / D L to form a track of a vector of a primary inertial couple into a substantial circle. A primary balancer 6 offsets the primary inertia couple.
摘要翻译:[问题]为了提高发动机的设计自由度,提高加速感觉,提高驾驶感觉,以及使发动机小型化。 [解决方法]提供了一种双平面型曲轴3。 各个气缸的曲柄腹板的重量分为左右半腹板(1a和1b至24a和24b),各气缸的半腹板的平衡比k L和k R设定为(k L - 0.25)·(0.25 - k R)÷DR / DL,以形成一个初级惯性耦合向量的矢量轨迹。 主平衡器6抵消主惯性对。
摘要:
A piston engine with a compensation shaft unit, wherein a window (36) surrounded by a flange (16,17) is provided on the crankcase (2) thereof. The flange forms a separating surface to which the housing (20;20,21) of the compensation shaft unit (18;18,19) is fixed by means of screws (70). In order to ensure clean, toothed-wheel engagement for the compensation shafts, which are integrated into the housing, and easy assembly, the compensation shaft (22,23) is provided with a toothed wheel (24,25) ,which protrudes through the window (36) inside the crankcase (2) and which is driven by a toothed wheel (10) which is arranged on the crankshaft (6), and the housing (20,21) of the compensation shaft unit (18,19) has a separating surface (40,41) which can be displaced in order to adjust the amount of engagement clearance on the separating surface (40,41) of the crankcase (2) before the screws (70) are tightened.