Low Pressure Fuel Injection TRIZ Cases

Hydraulic closing forces replace high-stress springs in diesel injectors, reducing manufacturing costs and extending component service life.

Rotating fuel injector connectors enable complete rail removal without engine disassembly, reducing maintenance costs and component stress.

A relief valve device uses a partition wall to support urging members for compact high-pressure pump operation.

A fuel injector coupling device uses form-fit retaining elements to secure the injection valve within the fuel rail assembly.

A hydraulically actuated suction valve autonomously regulates fuel flow within a direct injection pump system.

Offset holding elements on a forged fuel distributor rail reduce seal wear and screw stress by optimizing fastening stability.

Tapered seal stretches engage conical seats to maintain tightness while tolerating misalignment and preventing permanent deformations.

Nested ring elements and snap rings secure the fuel injector while eliminating metallic contact to reduce noise transmission.

A plastic fuel rail assembly integrates discrete metal reinforcing elements within specific regions to enhance structural integrity and minimize flexing.

Stiffening elements join the fuel distribution element and connecting element to distribute stress and prevent leaks from high-pressure reservoirs.

An annular positioning member sets radial locations of nozzle body and orifice member in a fuel injection device.

Press-fit attachment eliminates welding spatter blockages in fuel injection nozzles, reducing manufacturing man-hours while maintaining structural integrity.

Injecting fuel against airflow direction ensures even distribution and consistent air-fuel ratio across all cylinders.

Segmented snap ring and circlip retention prevents axial movement of the fuel injector, enabling secure hydraulic connection without complex assembly force.

An elastic piece with distinct curvature radii distributes stress and prevents plastic deformation, maintaining stable set load.

Segmented fuel rail check valves isolate pressure waves to maintain uniform injection flow, reducing engine noise and vibration.

A fuel injection system integrates a filter into the venturi throttle to manage metered fuel flow from the supply tank.

A fuel supply pump positions its negative pressure generating portion below the fuel level to draw liquid without creating vapor bubbles.

An undercut connecting piece integrates force transmission and sealing to resolve the trade-off between high-pressure tightness and mounting complexity.

A fuel injector seal configuration employs a high-durometer spacer ring to absorb sideload forces, preventing fretting and fuel leaks into lubrication chambers.

Segmenting a dedicated exhaust gas recirculation cylinder allows dual fuel combustion to increase hydrogen concentration in recirculated exhaust.

A fuel injection nozzle features a soft contact part that undergoes plastic deformation to absorb bending moments from misalignment.

A spacer-ring enables planar and rotational movements in fuel injectors, compensating for cylinder head tolerance variations.

A fuel rail vent system uses a primer pump and secondary reservoir to purge trapped air from the fuel line.

Segmented hooks engage the injection rail to prevent detachment during impacts, avoiding bulky guards that compromise limited engine space.

A plastic fuel distributor rail uses a self-tapping screw element with an annular groove to create a sealed medium-pressure connection.

A quill-mounted manifold reduces assembly stress by using spherical sealing surfaces to accommodate misalignment and maintain fluid sealing.

An integrated fixing member with damping parts absorbs high injection pressure while preventing injector departure during assembly and transfer.

A U-shaped clip secures a fuel injector to an annular cup, eliminating complex two-piece assemblies and reducing labor costs.

A distributed fuel injection system stores high-pressure fuel within connecting pipes and injectors to eliminate the common rail.

Vulcanized elastomer damping elements bonded to metallic socket bodies eliminate tolerance scattering and reduce seal wear in engine fuel distributor holders.

A fuel injection valve uses a spherical boundary portion to increase static contact pressure between the valve component and seat surface.

Segmented multilayer fuel line balances 250 bar pressure resistance against weight limits using optimized carbon content and wall thickness.

A fuel injection valve support structure uses a notch and protrusion to constrain rotation without complex elastic members.