|
A Kramer graph is a specific multiple-line 2D geometric symbolic representation of the characteristics of intake, scavenging and exhaust components in a two-stroke cycle engine. They are typically used to visualize the opening time versus area and/ or lift of the following components: * Intake port / valve * Scavenging port / valve * Exhaust port / valve * Reed inlet valve * Rotary inlet valve They do not show the specific configuration of ports like in a port-map, which enables it to illustrate a more useful visualization of port area distribution, This could be useful because different types of port configurations could have the same opening time and area. In these graphs the X-axis represents the crankshaft angle (θ) in degrees, and the left Y-axis represents the open area in any square unit of measure such as cm². To discern the different types of ports each type is given a designated color. For example (commonly used): * Blue - Intake system * Green - Scavenging system * Red - Exhaust system * Purple - Inlet valve Kramer graphs are named after Dutch engineer H. Kramer, who is considered to have been the first to use this type of graph in a publication on the effect of port shape and area on two-stroke cycle engine performance. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Kramer graph」の詳細全文を読む スポンサード リンク
|