Manufacturing method of semiconductor device and designing method of semiconductor device

    公开(公告)号:US06583027B2

    公开(公告)日:2003-06-24

    申请号:US10024157

    申请日:2001-12-18

    IPC分类号: H01L2176

    CPC分类号: H01L21/76229

    摘要: When a top surface area for a plurality of dummy patterns 13 and a width for a plurality of trenches 12 are set on the basis of a ratio (an occupation density of the film for polishing in an adjacent region 10) of a total top surface area for raised sections of the film for polishing to a horizontally projected area of the adjacent region 10, it is possible to suppress dishing and erosion and thereby attain a high planarity when a film for polishing is formed on a semiconductor substrate, wherein dummy patterns 13 partitioned by a plurality of trenches 12 are disposed in an element isolation region 11, and planarization by the CMP is applied thereto.

    Direct fuel injection ignition engine

    公开(公告)号:US5873344A

    公开(公告)日:1999-02-23

    申请号:US67286

    申请日:1998-04-27

    摘要: A direct injection ignition engine includes a piston with a cavity on a top surface thereof, an injector arranged at a peripheral portion of a combustion chamber to be faced to the combustion chamber for injecting a fuel directly into the combustion chamber, an ignition plug arranged to be projected to the combustion chamber for igniting the fuel introduced into the combustion chamber, an intake passage connected to the combustion chamber for introducing an intake air to the combustion chamber, intake air flow control valve arranged in the intake passage for controlling an intake air flow of an inclined vortex including a tumble component and swirl component produced in the combustion chamber, an actuator for driving the control valve, engine load detecting sensor for detecting an engine load, engine speed detecting sensor for detecting an engine speed, fuel supply controller, based on the output signals from the engine load detecting sensor and the engine speed detecting sensor, for producing control signals for the injector which include a fuel injection amount and fuel injection timing in a compression stroke for accomplishing a stratified combustion condition in which an air fuel mixture with an air fuel ratio greater than a theoretical one is concentrated around the ignition plug when an operating condition is in at least a low engine load and low engine speed condition, and, the fuel injection amount and fuel injection timing in an intake stroke for accomplishing a uniform combustion condition in which an air fuel mixture with an air fuel ratio greater than a theoretical one is uniformly and entirely dispersed in the combustion chamber when the operating condition is at least in a condition beyond said low engine load and engine speed condition with regard to the engine load and engine speed, and, producing control signals for the actuator to produce the inclined vortex of the air fuel mixture in the operating condition from the stratified combustion condition to the uniform combustion condition.

    METHOD OF STARTING SPARK IGNITION ENGINE WITHOUT USING STARTER MOTOR
    8.
    发明申请
    METHOD OF STARTING SPARK IGNITION ENGINE WITHOUT USING STARTER MOTOR 有权
    不使用起动电机启动火花点火发动机的方法

    公开(公告)号:US20070062476A1

    公开(公告)日:2007-03-22

    申请号:US11533040

    申请日:2006-09-19

    IPC分类号: F02N17/00 F02M1/00

    摘要: There is provided a method of starting a spark ignition engine having multiple cylinders. The method comprises supplying air and fuel for restart into a first cylinder before the engine completely stops, and igniting the mixture of the air and the fuel in the first cylinder in response to an engine start request. In accordance with the method, by supplying air and fuel into the first cylinder before the engine completely stops, the mixture of air and fuel in the first cylinder may be homogeneous at the time of the engine start request. Also, there may be less mixture turbulence and combustion may propagate better within the cylinder. These conditions may reduce the rate of combustion in the first cylinder after a start request is initiated. The slower combustion rate may decrease temperature of the combusted gas while the cylinder wall temperature is relatively low because the engine has stopped. As a result, the slower combustion may reduce heat loss in the first cylinder because of the smaller difference between the temperatures of the combusted gas and the cylinder wall. Consequently, more energy may be directed from the first cylinder to the crankshaft, so that the engine restart becomes more reliable.

    摘要翻译: 提供了一种起动具有多个气缸的火花点火发动机的方法。 该方法包括在发动机完全停止之前将空气和燃料重新启动进入第一气缸,并响应于发动机起动请求点燃第一气缸中的空气和燃料的混合物。 根据该方法,通过在发动机完全停止之前将空气和燃料供应到第一气缸中,在发动机起动请求时,第一气缸中的空气和燃料的混合物可以是均匀的。 此外,可能会有较少的混合物紊流,并且燃烧可能在气缸内更好地传播。 这些条件可以在开始启动请求之后降低第一气缸中的燃烧速率。 由于发动机停止,较慢的燃烧速率可能降低燃烧气体的温度,同时气缸壁温度相对较低。 结果,较慢的燃烧可以减少第一气缸中的热损失,因为燃烧气体和气缸壁的温度之间的差别较小。 因此,更多的能量可以从第一气缸引导到曲轴,使得发动机重起变得更可靠。