The differential pressure between the fuel and the gas which is to be injected into the engine may be maintained practically uniform, while the pressure at which the gas is injected into the engine varies according to the conditions.MACKAY MICHAEL LEONARD...
A five-million-kilometer, 100-vehicle fleet trial, of an air-assist, direct- fuel-injected automotive 2-stroke engine Once the focus of intense engineering scrutiny in the early 1990s, the major automotive companies suspended activity on 2-stroke engines because of perceiv... D Shawcross,C Pum...
The width of these control pulses is adjusted according to the indications of various engine transducers and determines the amount of fuel to be injected. The system also includes an air flow rate transducer whose output signal is monitored by a comparator. When the air flow rate signal ...
For the stoichiometric control strategy, fuel is injected directly into the cylinder during the intake stroke. In this case, the air/fuel mixture is produced within the cylinder. The engine valve configuration is such that “swirl” of the entering air mixes with fuel forming an essentially ...
In most gas turbines, liquid fuel is atomized and injected into the combustors in the form of a fine spray. A typical low-pressure fuel-atomization nozzle is shown in Figure 10-25. The fuel spray entrains air because of the momentum and drag of fuel droplets; however, this process produc...
beneficial to the firing of the first cycle in the case of a total excess air ratio of 1.0. The optimum 1st and 2nd injection timing fuel injection proportions are 120°CA ATDC during the intake stroke, 60°CA BTDC during the compression stroke and 1:1. In addition, the firing boundary...
The University of Idaho's entry into the 2014 SAE Clean Snowmobile Challenge is a 2013 Ski-Doo MXZ-TNT chassis with a low speed 797 cc direct-injected two-stroke engine modified for flex fuel use with blended isobutanol/gasoline fuel. A battery-less direct injection system was used to improv...
Thereby, a defined quantity of fuel can be interruptingly injected immediately by the interruptingly injecting means at the time of releasing the reset signal from the reset circuit to the microcomputer, preventing air-fuel ratio from becoming lean. 展开 ...
In order to solve the time lag of the injected fuel, it is necessary that the fuel injector1injects the fuel in synchronism with the intake stroke of the cylinder9based on new data of the intake air flow sensor2and that all the fuel injected by the fuel injector1is taken in the cylind...
The fuel injection control sets an injection prohibition period, in which injection of the fuel is prohibited, to a middle of the intake stroke. The injection prohibition period is decreased as the engine speed and as the intake air pressure increase. In addition, the amount of fuel injected ...