Lateral Stabilization via Jet Thrust Nozzles on Motorcycles

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Solution Overview

Problem

Motorized two-wheeled vehicles often experience excessive oversteer or understeer during cornering, leading to lateral skidding, which existing technologies struggle to effectively stabilize, especially in situations involving sharp acceleration or changing friction coefficients.

Innovation Solution

A method for lateral dynamic stabilization of single-track motor vehicles using nozzles mounted between the wheels, which discharge a medium to generate stabilizing forces when unstable conditions are detected, with the actuator system controlling the nozzles to counteract skidding by introducing transverse forces via the recoil principle.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If one-sided braking is used for lateral dynamic stabilization in two-track vehicles, then stabilization effectiveness is improved, but this solution is not applicable to single-track vehicles due to construction constraints

Engineering Contradiction:
Improvelateral dynamic stabilization effectivenessVSAvoidapplicability to single-track vehicles
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent replaces the mechanical braking system with a jet-based lateral force generation system. Instead of using brake pads to apply friction forces to the wheels, the invention uses nozzles to discharge medium (gas or liquid) that generates lateral forces through reaction thrust, enabling stabilization without mechanical contact with the wheels.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent employs pneumatic or hydraulic principles by using nozzles to discharge compressed gas or liquid under pressure. The medium is stored in containers (pressure vessels) and released through controlled nozzles to generate the required lateral stabilizing forces, leveraging fluid dynamics and reaction thrust principles.

Inventive Principle:
Principle #29Pneumatics and hydraulics

2Reliability

If nozzles are mounted on single-track vehicles to generate lateral forces, then stabilization capability is improved, but system complexity increases

Engineering Contradiction:
Improvelateral dynamic stabilization capabilityVSAvoidsystem complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent designs the nozzle system to serve multiple functions: it can generate lateral forces in both left and right directions, can be integrated with existing vehicle structures (frame, engine block, or body), and can use either gas or liquid as the medium. This multi-functionality reduces the need for separate stabilization systems for different directions or conditions.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent combines the stabilization function with existing vehicle components. The nozzles can be mounted on the frame, engine block, or body, merging the stabilization system with structural elements already present in the vehicle, thereby reducing overall system complexity and integration requirements.

Inventive Principle:
Principle #5Merging (Combining)

3Reliability

If medium is discharged through nozzles to counteract lateral skidding, then vehicle stabilization is improved, but energy consumption increases

Engineering Contradiction:
Improvevehicle stabilizationVSAvoidenergy consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent implements periodic or pulsed discharge of the medium through the nozzles rather than continuous discharge. The control system activates the nozzles only when unstable driving conditions are detected and deactivates them when stability is restored, thereby reducing overall energy consumption while maintaining effective stabilization when needed.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The patent allows for adjusting parameters such as the discharge pressure, flow rate, and duration of medium release based on the severity and type of unstable condition detected. By dynamically changing these parameters, the system optimizes energy consumption to match the actual stabilization requirements, avoiding excessive energy use during minor disturbances.

Inventive Principle:
Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Effectively prevents lateral skidding and stabilizes the vehicle by generating necessary transverse forces, reducing the risk of accidents such as highsiders, through precise detection and response to unstable driving conditions.

Implementation Method 1

introducing transverse forces via the recoil principle

Methodology Applied
Scientific EffectRecoil principle: Reaction (physics)

Data Source

PatentUS10773759B2Method for lateral dynamic stabilization of a single-track motor vehicle
Publication Date: 2020.09.15 ROBERT BOSCH GMBH
  • US10773759B2 patent drawing

AI summary

A method for lateral dynamic stabilization of a single-track motor vehicle during cornering; on the left side of the vehicle, the motor vehicle including at least one first nozzle, which is mounted at a first position located between the wheels, and through which a medium situated in a first container may escape into the surroundings of the motor vehicle, with a speed component pointed in the outer direction of the left side of the vehicle; and on the right side of the vehicle, the motor vehicle including at least one second nozzle, which is mounted at a second position located between the wheels, and through which a medium situated in a second container may escape into the surroundings of the motor vehicle, with a speed component pointed in the outer direction of the right side of the vehicle; —where a presence of an unstable driving condition in a lateral direction of the vehicle is detected, and—as a function of this, with the aid of an actuator system, on only one side of the vehicle, the medium is caused to escape through the at least one nozzle mounted on this side of the vehicle, in order to stabilize the motor vehicle.