Hydraulic pump unit with orifice plate for vehicle brake control system
First Claim
1. A hydraulic pump unit for vehicle brake control system comprising:
- a pump housing;
a cylinder received in a receiving hole formed in the pump housing, the cylinder having a bottom portion and being provided at the bottom portion with an outlet valve;
a plunger received in the cylinder with a slidable contact, the plunger being driven by a cam and defining a pump chamber in cooperation with the cylinder;
an inlet valve provided on the plunger;
an inlet passage formed in the pump housing, an opening of the inlet passage being provided in the receiving hole;
an outlet passage formed in the pump housing, an opening of the outlet passage being provided in the receiving hole;
a plug member for closing an opening of the receiving hole, the plug member being fixed to the bottom portion of the cylinder; and
an orifice passage formed on an orifice plate, the orifice plate being arranged between the bottom portion and the plug member.
1 Assignment
0 Petitions
Accused Products
Abstract
A hydraulic pump unit for vehicle brake control system comprising a pump housing, a cylinder received in a receiving hole formed in the pump housing. The cylinder has a bottom portion and is provided at the bottom portion with an outlet valve. A plunger is slidingly received in the cylinder and defines a pump chamber in cooperation with the cylinder. An inlet valve provided on the plunger, an inlet passage formed in the pump housing. An opening of the inlet passage is provided in the receiving hole. An outlet passage formed in the pump housing, an opening of the outlet passage is provided in the receiving hole. A plug member for closing an opening of the receiving hole, the plug member is fixed to the bottom portion of the cylinder, and an orifice plate having a passage is arranged between the bottom portion and the plug member.
14 Citations
18 Claims
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1. A hydraulic pump unit for vehicle brake control system comprising:
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a pump housing;
a cylinder received in a receiving hole formed in the pump housing, the cylinder having a bottom portion and being provided at the bottom portion with an outlet valve;
a plunger received in the cylinder with a slidable contact, the plunger being driven by a cam and defining a pump chamber in cooperation with the cylinder;
an inlet valve provided on the plunger;
an inlet passage formed in the pump housing, an opening of the inlet passage being provided in the receiving hole;
an outlet passage formed in the pump housing, an opening of the outlet passage being provided in the receiving hole;
a plug member for closing an opening of the receiving hole, the plug member being fixed to the bottom portion of the cylinder; and
an orifice passage formed on an orifice plate, the orifice plate being arranged between the bottom portion and the plug member.
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2. A hydraulic pump unit for vehicle brake control system comprising:
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a pump housing;
a cylinder received in a receiving hole formed in the pump housing, the cylinder having a bottom portion and being provided at the bottom portion with an outlet valve;
a plunger received in the cylinder with a slidable contact, the plunger being driven by a cam and defining a pump chamber in cooperation with the cylinder;
an inlet valve provided on the plunger;
an inlet passage formed in the pump housing, an opening of the inlet passage being provided in the receiving hole;
an outlet passage formed in the pump housing, an opening of the outlet passage being provided in the receiving hole;
a plug member for closing an opening of the receiving hole, the plug member being fixed to the bottom portion of the cylinder; and
an orifice passage formed on an orifice plate, the orifice plate being arranged between the bottom portion and the plug member, wherein the orifice passage comprises a slit formed on the orifice plate. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification