V-Twin Motorcycle Engine in Off-Road Vehicle
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Solution Overview
Problem
Current off-road vehicles lack a high power engine option that balances power, torque, and fuel efficiency without the disadvantages of car engines, such as heating issues and low fuel efficiency in desert environments.
Innovation Solution
A recreational four-wheel drive vehicle equipped with a longitudinally mounted V-twin motorcycle engine ranging from 100 to 150 cubic inches, featuring a tubular chassis, chain drive, transmission/transfer unit, and independent suspension, providing a hybrid all-terrain capability with high power and torque.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If car engines (VW, V-6, V-8) are used in off-road vehicles, then high power and torque are achieved, but heating problems and low fuel efficiency occur in desert environments
Solution Approach 1:
The patent extracts the engine from conventional car-based designs and selects a motorcycle engine specifically suited for off-road conditions. This extraction allows elimination of the harmful thermal characteristics associated with car engines while retaining the desired power output for off-road applications.
Solution Approach 2:
The patent changes the engine type parameter from water-cooled car engines to air-cooled motorcycle engines. This parameter change fundamentally alters the thermal management approach, eliminating heating problems in desert environments while maintaining high power and torque output through the motorcycle engine's design characteristics.
2Power
If car engines (VW, V-6, V-8) are used in off-road vehicles, then high power and torque are achieved, but fuel efficiency is reduced in desert environments
Solution Approach 1:
The patent extracts the engine from conventional car-based designs and selects a motorcycle engine specifically suited for off-road conditions. This extraction allows elimination of the poor fuel efficiency characteristics associated with car engines while retaining the desired power output for off-road applications.
Solution Approach 2:
The patent changes the engine type parameter from car engines to motorcycle engines, which inherently provide better fuel efficiency. This parameter change maintains high power and torque output while significantly improving fuel economy in desert environments through the motorcycle engine's optimized combustion characteristics.
3Use of energy by moving object
If single cylinder engines are used in ATVs, then fuel efficiency is improved, but power and torque output are limited
Solution Approach 1:
The patent merges the fuel efficiency advantage of single cylinder engines with the power advantage of multi-cylinder engines by selecting a V-twin motorcycle engine. This combining of characteristics achieves both high fuel efficiency and high power/torque output, resolving the contradiction between these two parameters.
Solution Approach 2:
The patent changes the engine configuration parameter from single cylinder to V-twin configuration. This parameter change increases power and torque output while maintaining the fuel efficiency characteristics of motorcycle engines, thereby resolving the contradiction between power output and fuel efficiency.
4Power
If larger engines are used to increase power, then power and torque output are improved, but vehicle size and weight increase
Solution Approach 1:
The patent employs a motorcycle engine that provides high power-to-weight ratio characteristics. This engine selection delivers substantial power and torque output without the excessive weight that would result from using larger car engines, effectively resolving the contradiction between power output and vehicle weight.
Solution Approach 2:
The patent changes the engine type parameter to a motorcycle engine with inherently superior power-to-weight characteristics. This parameter change achieves high power and torque output while minimizing the weight increase, thereby resolving the contradiction between power output and vehicle weight.
Data Source
AI summary
A v-twin motorcycle engine, 100 to 140 cubic inches (1600 cc to 2300 cc) is mounted longitudinally in a tubular chassis behind dual seats. A chain drive is mounted to the crankshaft that further drives a clutch device. A transmission/transfer unit is mounted in front of and below the engine and receives a clutch output shaft. The transfer case has two output drive shafts, one to a front differential and the other to a rear differential located under the engine. The differentials each have two shafts that drive the four wheels. The wheels have disk brakes and typical independent suspension for driven wheels of such types of vehicles. The present invention provides an off road, sports utility vehicle having the power between an ATV and a 4 cylinder (VW) engine. Further an adjustable engine mount allows for the selection of different engines.