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    • 2. 发明授权
    • Internal-combustion engine and method of disposing ignition plug thereof
    • 内燃机及其火花塞的配置方法
    • US07444981B2
    • 2008-11-04
    • US11794425
    • 2006-04-13
    • Masaaki Ashida
    • Masaaki Ashida
    • F02P15/02F02P15/08
    • F02P15/02
    • An internal-combustion engine is disclosed in which a pair of inlet valves and a pair of outlet valves are provided within the combustion chamber formed in each of a row of cylinders. A first ignition plug is disposed in the cylinder head within a central area of the combustion chamber in plan view. Second and third ignition plugs are disposed in the cylinder head at opposite peripheral portions of the combustion chamber positioned approximately along the first axis direction in plan view, the second and third ignition plugs are arranged so that the discharge electrode portions of the second and third ignition plugs being inclined inwardly of the combustion chamber in opposite directions and are substantially symmetrical relative with the first ignition plug in plan view. A line intersecting the discharge electrode portions of the second and third ignition plugs forms an oblique angle with the direction of the row of cylinders in plan view.
    • 公开了一种内燃机,其中在一排气缸中形成的燃烧室内设置有一对入口阀和一对出口阀。 第一火花塞在平面图中设置在燃烧室的中心区域内的气缸盖内。 第二和第三火花塞在平面图中大致沿着第一轴线方向定位在燃烧室的相对周边部分处设置在气缸盖中,第二和第三火花塞被布置成使得第二和第三点火的放电电极部分 塞子在相反方向上向燃烧室的内侧倾斜,并且在平面图中相对于第一火花塞基本对称。 与第二和第三火花塞的放电电极部分相交的一条线在俯视图中与该列气缸的方向形成倾斜角。
    • 8. 发明授权
    • Exhaust manifold for four-cylinder engine
    • 四缸发动机排气歧管
    • US07520127B2
    • 2009-04-21
    • US11223105
    • 2005-09-12
    • Masaaki AshidaKimiyoshi Nishizawa
    • Masaaki AshidaKimiyoshi Nishizawa
    • F01N7/10
    • F02B27/04F01N3/28F01N13/08F01N13/10Y02T10/146
    • In an exhaust manifold of a four-cylinder engine four cylinders of which line up in order of cylinder #1, cylinder #2, cylinder #3 and cylinder #4, temperature rise performance of a manifold catalyst improves by shortening a total length of the exhaust manifold while preventing exhaust gas interference between the cylinders. Therefore, an exhaust manifold branch of cylinder #1 and an exhaust manifold branch of cylinder #4 in outward sides of the engine that are not fired in succession are made convergent with its convergence angle θ1 being equal to or below 20 degrees to form a first convergent exhaust manifold branch and an exhaust manifold branch of cylinder #2 and an exhaust manifold branch of cylinder # 3 between the cylinder #1 and cylinder #4 that are not fired in succession are made convergent at a minimum distance having a laterally projected shape to form a second convergent exhaust manifold branch. The first and the second convergent exhaust manifold branches are thereafter convergent at a convergence angle θ3 from 0 degrees to 20 degrees.
    • 在四缸发动机的排气歧管中,按气缸#1,气缸#2,气缸#3和气缸#4的顺序排列的四个气缸,通过缩短总气瓶的总长度来改善歧管催化剂的升温性能 排气歧管,同时防止气缸之间的废气干扰。 因此,在发动机的外侧的气缸#1的排气歧管分支和不连续点火的气缸#4的排气歧管分支会聚,其会聚角θ1等于或低于20度,形成第一 会聚排气歧管分支和气缸#2的排气歧管分支和气缸#1的气缸#1的排气歧管分支在气缸#1和气缸#4之间不连续点火,使其以具有横向投影形状的最小距离收敛 形成第二收敛排气歧管分支。 此后,第一和第二收敛排气歧管分支在从0度到20度的会聚角θ3收敛。