LEAK DIAGNOSIS DEVICE OF FUEL VAPOR TREATMENT APPARATUS

Organization Name

Inventor(s)

LEAK DIAGNOSIS DEVICE OF FUEL VAPOR TREATMENT APPARATUS - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240159617 titled 'LEAK DIAGNOSIS DEVICE OF FUEL VAPOR TREATMENT APPARATUS

Simplified Explanation

The patent application describes a leak diagnosis device for a fuel vapor treatment apparatus. Here are the key points of the invention:

First diagnosis unit performs leak diagnosis of fuel tank based on tank internal pressure in closed state of sealing valve.
Determination unit opens sealing valve when tank internal pressure is normal, checks influence on switching valve openability.
Second diagnosis unit performs leak diagnosis of canister based on tank or canister internal pressure, depending on determination unit's findings.

Potential Applications of this Technology

The technology can be applied in automotive fuel vapor treatment systems to detect leaks in fuel tanks and canisters, ensuring proper functioning and safety.

Problems Solved by this Technology

This technology solves the problem of undetected leaks in fuel vapor treatment systems, which can lead to environmental pollution and safety hazards.

Benefits of this Technology

The benefits of this technology include improved leak detection accuracy, early identification of potential issues, and enhanced overall performance of fuel vapor treatment systems.

Potential Commercial Applications of this Technology

Potential commercial applications of this technology include automotive manufacturing companies, fuel system component suppliers, and environmental monitoring agencies.

Possible Prior Art

One possible prior art could be leak detection systems in automotive fuel systems that rely solely on pressure sensors without the additional features and functionalities described in this patent application.

Unanswered Questions

1. How does this technology compare to existing leak detection systems in terms of accuracy and reliability? 2. Are there any specific regulations or standards that this technology needs to comply with in the automotive industry?

Original Abstract Submitted

a leak diagnosis device for a fuel vapor treatment apparatus, comprising: a first diagnosis unit that performs a leak diagnosis of a fuel tank based on a tank internal pressure in a closed state of a sealing valve; a determination unit that opens a sealing valve in a state where a purge valve and a switching valve are closed when the tank internal pressure is within a normal range, and determines whether there is an influence on the valve openability of the switching valve; and a second diagnosis unit that performs a leak diagnosis of the canister based on the tank internal pressure or the canister internal pressure when the determination unit makes a negative determination, and performs a leak diagnosis of the canister based on the canister internal pressure after closing the closed valve when the determination unit makes an affirmative determination.

Toyota jidosha kabushiki kaisha (20240159617). LEAK DIAGNOSIS DEVICE OF FUEL VAPOR TREATMENT APPARATUS simplified abstract

Contents

LEAK DIAGNOSIS DEVICE OF FUEL VAPOR TREATMENT APPARATUS

Organization Name

Inventor(s)