초록 ▼

A fuel injection system for a spark-ignition internal combustion engine in which combustion air is fed through an air flow meter to produce an input force whose strength is proportional to the mass-volume of the air. This input force actuates the valve member of a valve mechanism to whose input is s

A fuel injection system for a spark-ignition internal combustion engine in which combustion air is fed through an air flow meter to produce an input force whose strength is proportional to the mass-volume of the air. This input force actuates the valve member of a valve mechanism to whose input is supplied fuel at constant pressure, the valve member being displaced to an extent determined by the strength of the input force. The valve mechanism includes a fuel output chamber in which the pressure of fuel therein is a function of valve member displacement, this pressure being applied as a countervailing force to the valve member to cause it to assume a null-balance position at which the resultant mean fuel pressure yielded by the output chamber is proportional to the mass-volume of the combustion air, thereby attaining optimum fuel-air ratio conditions throughout a broad operating range.

대표청구항 ▼

A fluid servo system comprising: a first fluid constant pressure source; a signal force derived from and proportional to the varying flow rate of a second fluid and; a valve mechanism having a valve member which is activated by said signal force displacing it to an extent determined by the strength

A fluid servo system comprising: a first fluid constant pressure source; a signal force derived from and proportional to the varying flow rate of a second fluid and; a valve mechanism having a valve member which is activated by said signal force displacing it to an extent determined by the strength of this force the mechanism including an input port coupled to said first fluid source, a return port coupled to a source reservoir, an output chamber coupled to an inflow port, an exhaust port, a countervailing pressure chamber, and a discharge outlet; the prevailing pressure of the source fluid in said output chamber being determined by the position of said valve member which when displaced in one direction simultaneously opens said inflow port and closes off said exhaust port, thereby increasing fluid pressure in said output chamber and in reverse decreasing fluid pressure by controlling the rate of inflow and exhaust from said output chamber, whereby the prevailing pressure in said output chamber being applied to said valve member as a countervailing force to said signal force causes said valve member to seek and assume a equilibrium position at which the forces are balanced and the resultant mean fluid pressure of the source fluid yielded from said discharge outlet is proportional to said signal force.