Diesel Kiki Co., Ltd.

Hideyuki Kimura

Keiichi Yamada

Hitoshi Tomita

This invention relates to an exhaust-gas particle treating device for burning the exhaust-gas particles contained in exhaust gas of an internal-combustion engine which is collected by a filter to be regenerated, and a needle valve lift limiting mechanism is provided in at least one of the fuel injection nozzles, and a fuel accumulating means is provided on an injecting pipe connected to the fuel injection nozzle by means of an electromagnetic switching valve, and also, a flow quantity control means is provided for controlling flow quantity from the fuel accumulating means to prolong the injection period of the fuel and to elevate the temperature of the exhaust gas.

Exhaust-gas particle treating device for internal-combustion engine

In a distributor type fuel injection pump in which fuel is sucked and pressurized by a reciprocating and rotating plunger, and the pressurized fuel is fed under pressure to each fuel injection nozzle from a distribution port by means of a distribution path, the improvement constituted by a delivery valve to be provided in the distribution path is omitted or a delivery valve having a large suction return quantity is provided, and an auxiliary port is provided in the plunger, and a groove for taking out the pressure when it is aligned with the auxiliary port is formed in the plunger barrel, and a uniform pressure slit is formed on the plunger which is at an identical position with that of the distribution port and being circumferentially offset by a proper angle, and the uniform pressure slit is communicated with the groove for taking out the pressure by means of a communicating path, and a pressure equalizing valve is provided in the communicating path, whereby non-continuous injection in a low speed zone can be prevented while the residual pressure before the injection can be set at high pressure, and also, the generation of a secondary injection can be curbed on account of the pressure after the injection being zero or the pressure after the injection being lowered to near zero.

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Higashimatsuyama, Japan

Hideyuki Kimura