A device and fuel injector for electronically controlled fuel injection
An electronically controlled fuel injection and fuel injector technology, which is applied in fuel injection devices, charging systems, machines/engines, etc., can solve problems affecting reliability, sticking, sealing ball and sealing cone surface wear, etc., and achieve reduction Rigid impact, improved service life, and the effect of ensuring fuel injection characteristics
Active Publication Date: 2022-02-11
FAW JIEFANG AUTOMOTIVE CO
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Problems solved by technology
The hydraulic damping effect in the prior art is limited and cannot effectively buffer the impact stress. Long-term use will cause serious wear between the sealing ball and the sealing cone surface, affecting reliability. The damping pad is easily deformed under high-frequency dynamic impact , offset, which will cause the armature rod to run unsmoothly, or even get stuck, affecting the fuel injection characteristics of the injector, and ultimately shortening the service life of the injector
Method used
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Embodiment Construction
[0023] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.
[0024] Refer below Figure 1 to Figure 5 The specific structure of the device for electronically controlled fuel injection according to the embodiment of the present invention will be described.
[0025] Such as Figure 1 to Figure 3 As shown, this embodiment provides a device for electronically controlled fuel injection, including a valve seat 1, an armature block 2, an armature rod 3 and an electromagnetic driver 4. The armature block 2 is placed on the valve seat 1, and the armature block 2 There is a first matching hole 21 on the valve seat 1, and a second matching hole 11 and an oil outlet hole 12 are provided on the valve seat 1. The armature rod...
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The invention discloses an electronically controlled fuel injection device and a fuel injector, which belong to the technical field of engine fuel injection valves. The device for electronically controlled fuel injection includes a valve seat, an armature block, an armature rod and an electromagnetic driver. The armature block is provided with a first fitting hole, and the valve seat is provided with a second fitting hole and an oil outlet hole. The armature rod passes through in turn. It is arranged in the first matching hole and the second matching hole and stops against the ball valve. The armature rod can stop against the armature block. At least one of the bottom end surface of the armature block and the top end surface of the valve seat is provided with a first guide. The oil groove, and at least one of the bottom end surface of the armature block and the top end surface of the valve seat has an elastic coating, and the electromagnetic driving part can absorb the armature block to move vertically upward. The device for electronically controlled fuel injection can effectively buffer the impact stress, reduce the wear between the ball valve and the sealing cone surface, ensure the fuel injection characteristics of the fuel injector, and prolong the service life of the fuel injector.
Description
technical field [0001] The invention relates to the technical field of engine fuel injection valves, in particular to an electronically controlled fuel injection device and a fuel injector. Background technique [0002] As an important part of the fuel injector, the control valve can accurately control the opening or closing of the fuel injector, which is the key influencing factor for the precise control of the fuel injector. Now the injection pressure requirements of the fuel injector are constantly increasing, while the control valve movement and impact Frequent, dynamic impact stress is great. The hydraulic damping effect in the prior art is limited and cannot effectively buffer the impact stress. Long-term use will cause serious wear between the sealing ball and the sealing cone surface, which will affect reliability. The damping pad is easily deformed under high-frequency dynamic impact , offset, which will cause the armature rod to run unsmoothly or even get stuck, w...
Claims
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IPC IPC(8): F02M51/06F02M61/04F02M61/18F02M61/20
CPCF02M51/061F02M51/0614F02M61/04F02M61/1886F02M61/20
Inventor 杨中伟高广新朱君亮张建刚张礼林杨翔宇杨振国朱明健吴东兴夏少华
Owner FAW JIEFANG AUTOMOTIVE CO