Cooperative Pinion and Belt Starter for Engine Start
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Solution Overview
Problem
Existing methods for starting internal combustion engines in vehicles often result in uncomfortable starts due to excessive vibrations and are costly and weight-intensive, particularly during cold starts, as they rely on single starter systems that fail to minimize vibrations effectively.
Innovation Solution
A method utilizing a cooperative starting process that employs both a pinion starter and a belt starter to drive the driveshaft, where the pinion starter assists in overcoming breakaway torque and the belt starter ensures a vibration-free cranking process, allowing for a comfortable start without the need for costly adaptations, thus reducing weight and fuel consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single pinion starter is used to drive the driveshaft during starting, then the starter can be of compact design, but excessive vibrations occur during the starting process
Solution Approach 1:
The patent combines a pinion starter and a belt starter into a cooperative starting system. The pinion starter engages with the driveshaft gear to provide initial torque, while the belt starter engages with the driveshaft pulley to continue the cranking process. This merging of two different starting mechanisms allows the system to overcome breakaway torque efficiently while minimizing vibrations during the starting process.
2Object-affected harmful factors
If a single belt starter is used to drive the driveshaft during starting, then vibrations are minimized, but the starter requires torque adaptations that increase weight and cost
Solution Approach 1:
The starting process is segmented into two phases: the pinion starter handles the initial breakaway torque requirement, while the belt starter takes over for the continuous cranking phase. This segmentation allows each starter to be optimized for its specific function, enabling the belt starter to be of compact design without requiring torque adaptations for cold starts.
3Object-affected harmful factors
If a cooperative starting process with pinion starter and belt starter is used, then vibrations are minimized and starters can be compact, but the device complexity increases
Solution Approach 1:
The control system dynamically manages the operation of the pinion starter and belt starter based on real-time conditions. The pinion starter is activated first to overcome breakaway torque, then the belt starter is engaged to continue cranking. This dynamic control sequence optimizes the starting process while keeping the overall system design manageable through automated coordination.
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
The cooperative starting process achieves a comfortable and efficient engine start by minimizing vibrations and maintaining low weight and cost, with the pinion starter being compact and the belt starter not requiring torque adaptations, thereby reducing emissions and fuel consumption.
Implementation Method 1
the driveshaft is driven by the starting device, that is to say by means of the pinion starter and by means of the belt starter
Implementation Method 2
the pinion starter assists in overcoming breakaway torque
Data Source
AI summary
A method is provided for starting an internal combustion engine with a driveshaft for a motor vehicle. A starting process is carried out, by which the internal combustion engine is started and thereby transferred from a deactivated state into a powered operation, wherein the starting process is carried out by a pinion starter and by a belt starter, by which the driveshaft is driven during the starting process.