Pump module, evaporated fuel processing device provided with pump module, and pump control circuit
AssigneeAisan Kogyo Kabushiki Kaisha
InventorDaisaku Asanuma
Life of this patent
Estimating the term…
Abstract
A pump module includes a pump section that discharges evaporated fuel generated in a fuel tank to an intake path of an internal combustion engine. The pump module also stores correction information for correcting a rotation speed of the pump section based on a difference between a reference discharge characteristic of a reference pump section at a predetermined rotation speed and a discharge characteristic of the pump section at the predetermined rotation speed
Claims9
A pump module comprising:
- a pump section configured to discharge evaporated fuel generated in a fuel tank to an intake path of an internal combustion engine;
- and
- a pump circuit section comprising a storage storing correction information for correcting a rotation speed of the pump section based on a difference between a reference discharge characteristic of a reference pump section at a predetermined rotation speed and a discharge characteristic of the pump section at the predetermined rotation speed.
A pump control circuit configured to control a pump section configured to discharge evaporated fuel generated in a fuel tank to an intake path of an internal combustion engine, the pump control circuit comprising:
- a storage storing correction information for correcting a rotation speed of the pump section based on a difference between a reference discharge characteristic of a reference pump section at a predetermined rotation speed and a discharge characteristic of the pump section at the predetermined rotation speed;
- and
- a controller configured to correct, when receiving a signal for driving the pump section at a specific rotation speed, a received specific rotation speed using the correction information, and drive the pump section at a corrected rotation speed.
Dependencies are inferred from the claim text.