Lean Vehicle Start-Phase Control for Stable Automatic Launch

Solution Overview

Problem

Lean vehicles, such as motorcycles, experience unstable vehicle body behavior during automatic start due to their propensity to change posture easily, which compromises safety.

Innovation Solution

A control device and method that adjusts the positional relationship between a lean vehicle and a target using surrounding environment information, incorporating a stop phase and a start phase, with the start phase optimized based on start resistance information to stabilize the vehicle.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If automatic start is implemented in lean vehicles, then productivity and automation are improved, but vehicle body stability deteriorates

Engineering Contradiction:

Improveautomatic startVSAvoidvehicle body stability

Core Design Contradiction:

Extent of automationVSStability of the object's composition

Solution Approach 1:

The control device performs preliminary assessment of start resistance before executing automatic start. It evaluates terrain conditions, vehicle state, and other factors in advance to determine whether automatic start should be executed, thereby preventing unstable vehicle behavior before it occurs.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The control device continuously monitors vehicle state and start resistance information during the automatic start process. Based on feedback from sensors detecting vehicle posture and environmental conditions, the system adjusts control parameters to maintain stability while achieving automatic start.

Inventive Principle:

Principle #23Feedback

2Productivity

If automatic start is executed without considering start resistance, then productivity is improved, but safety deteriorates

Engineering Contradiction:

Improveautomatic start executionVSAvoidsafety

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The control device performs preliminary assessment of start resistance before executing automatic start. It evaluates terrain conditions, vehicle state, and other factors in advance to determine whether automatic start should be executed, thereby preventing unstable vehicle behavior before it occurs.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The control device continuously monitors vehicle state and start resistance information during the automatic start process. Based on feedback from sensors detecting vehicle posture and environmental conditions, the system adjusts control parameters to maintain stability while achieving automatic start.

Inventive Principle:

Principle #23Feedback

Data Source

PatentEP4703225A1Control device and control method

Publication Date: 2026.03.04 ROBERT BOSCH GMBH

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AI summary

The invention provides a control device and a control method that can improve safety of a lean vehicle. In a control device (20) and a control method according to the invention, an execution section of the control device (20) executes a positional relationship adjustment operation that adjusts a positional relationship between the lean vehicle (1) and a target so that the positional relationship becomes a target positional relationship based on surrounding environment information of the lean vehicle (1), and the execution section sequentially executes, in the positional relationship adjustment operation, a stop phase in which the lean vehicle (1) is automatically decelerated and stopped, and a start phase in which the lean vehicle (1) is caused to perform automatic start when a start trigger signal is acquired, and changes the start phase based on start resistance information.