Cylinder Head Blank for Adaptable High-Pressure Pump Configurations

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Solution Overview

Problem

Existing high-pressure pumps for fuel injection systems in air-compressing, auto-ignition internal combustion engines have a predefined outlet direction for the low-pressure side, requiring additional components, space, and machining efforts for directional adjustments.

Innovation Solution

A modular cylinder head design with a base that can be soft-machined to accommodate different outlet directions, featuring radially positioned low-pressure connecting points and integrally formed mounting brackets, allowing for flexible configuration without additional components, reducing machining needs and space requirements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the outlet direction for the low-pressure side is predefined by design, then the cylinder head structure is simple, but the adaptability to different applications is reduced

Engineering Contradiction:
Improveadaptability to different outlet directionsVSAvoidstructure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The cylinder head base is designed with a dynamic configuration capability, allowing the outlet direction to be changed from a fixed predefined state to an adjustable state. The base can be soft-machined to different angular positions (e.g., 0°, 45°, 90°, 135°, 180°, 225°, 270°, 315°) to adapt to different application requirements without changing the fundamental structure.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The outlet direction is changed by modifying the angular position parameter of the base configuration. The base can be processed at different angular orientations to accommodate various outlet directions, allowing the same base design to serve multiple applications by changing only the angular parameter.

Inventive Principle:
Principle #35Parameter changes

2Adaptability or versatility

If additional components are added to change the outlet direction, then the adaptability is improved, but the device complexity and space requirements increase

Engineering Contradiction:
Improveoutlet direction flexibilityVSAvoidnumber of components
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The need for additional components to change outlet direction is eliminated by extracting the directional adjustment capability from separate parts and integrating it directly into the base structure. The base itself becomes the element that provides directional flexibility through its soft-machining capability, removing the need for separate directional adjustment components.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The outlet direction adjustment function is merged with the base structure. Instead of having a fixed base and separate adjustable components, the base itself is designed to be soft-machined to different angular positions, combining the structural support function with the directional adjustment function in a single integrated component.

Inventive Principle:
Principle #5Merging (Combining)

3Adaptability or versatility

If additional components are added to change the outlet direction, then the adaptability is improved, but the space requirements increase

Engineering Contradiction:
Improveoutlet direction flexibilityVSAvoidspace requirement
Core Design Contradiction:
Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The space-consuming additional components are removed by extracting the directional adjustment capability and embedding it within the base structure. This eliminates the need for extra space to accommodate separate adjustment mechanisms while maintaining the same adaptability.

Inventive Principle:
Principle #2Taking out (Extraction)

4Adaptability or versatility

If additional machining is performed to adapt to different applications, then the adaptability is improved, but the manufacturing effort increases

Engineering Contradiction:
Improveapplication-specific configurationVSAvoidmachining effort
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The base is designed with preformed radial projections and mounting brackets that are ready for different configurations. The soft-machining capability is prepared in advance, allowing different angular positions to be achieved through relatively simple machining operations rather than complex manufacturing processes.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

Instead of requiring completely different manufacturing processes for different applications, the same base can be processed at different angular positions through soft-machining. This parameter change approach allows application-specific configurations to be achieved with minimal additional machining effort compared to manufacturing entirely different components.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS9874186B2Cylinder head blank, cylinder head and high-pressure pump for fuel injection systems
Publication Date: 2018.01.23 ROBERT BOSCH GMBH
  • US9874186B2 patent drawing
  • US9874186B2 patent drawing
  • US9874186B2 patent drawing

AI summary

The invention relates to a cylinder head blank (9) for a high-pressure pump (1), which is in particular configured as a radial or in-line piston pump for fuel injection systems of air-compressing, auto-ignition internal combustion engines, comprising a base (10) having a high-pressure outlet (16) and a plurality of low-pressure connecting points (13-15). Here, the plurality of low-pressure connecting points (13-15) are closed in a raw state, wherein a low-pressure connection (11) can be fitted to each of the low-pressure connecting points (11). The invention further relates to a cylinder head for a high-pressure pump (1) and to a high-pressure pump (1).