To provide a fuel pump capable of securing the strength resistant to higher fuel pressure while solving problems on the larger size and cost increase of the fuel pump.
A pump portion 32 for sucking and discharging fuel and a motor portion 33 for driving the pump portion 32 are provided in a housing 31 and an impeller 36 is housed between an outer casing 34 for the pump portion 32 and an inner casing 35 arranged inside thereof. The outer casing 34 for the pump portion 32 and the impeller 36 are formed of a resin and the inner casing 35 is formed of a stainless steel having a Young's modulus ten times larger than the resin. Thus, even when the inner casing 35 is thinner than conventional one formed of a resin, the strength resistant to higher fuel pressure is secured. Furthermore, a discharge groove 55 is formed in the inner face of the inner casing 35 by pressing for discharging fuel to a discharge port formed through the inner casing 35.
| JP6968738 | Fuel tank lid |
| WO/2002/018798 | AGGREGATE FOR CONVEYING FUEL |
ITO MOTOYA
MORI YUKIO
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