Innovative Air Hybrid Diesel Engine for Urban Buses
Powertrain Technologies Ltd aims to design and develop a demonstrator of an air hybrid diesel engine system targeted at the urban bus market, which is characterized by stop/start duty cycles. Utilizing Brunel University's internationally patented regenerative air hybrid technology, this project focuses on integrating the system with modern diesel engines used by bus companies in Europe and globally. The technology promises fuel savings of 8% - 15%, depending on the bus's duty cycles and base vehicle performance, with corresponding reductions in CO2 emissions and running costs. Annual operating cost savings are estimated to be between £5,000 and £8,000 per bus. The system operates by switching the engine to function as a large air pump during braking, capturing vehicle energy as compressed air and using it to restart the engine. The project includes developing a universal moveable air connector to interface between the engine inlet ports and the air reservoir system, ensuring normal engine operation without power loss. The project will conclude with an operational prototype bus using the system, aiming to compare its on-road performance with standard vehicles and promote the product.
Feedback Overview:
The idea of creating an air hybrid diesel engine system for urban buses is highly innovative and addresses a critical need for fuel efficiency and emission reduction in public transportation. To enhance the product-market fit, it is recommended to conduct extensive real-world testing to validate the fuel savings and CO2 reduction claims. Additionally, collaborating with major bus manufacturers and public transportation authorities could accelerate adoption and market penetration. Exploring additional applications beyond urban buses, such as delivery trucks or other commercial vehicles, could further increase the business value of the idea.
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CTO
Expert in automotive engineering and hybrid propulsion systems
How feasible is the integration of this air hybrid system with existing diesel engines?
Given the innovative moveable air connector, the integration should be feasible with minimal modifications to existing diesel engines, ensuring compatibility and maintaining engine performance.
What are the potential technical challenges in developing the universal moveable air connector?
Potential technical challenges include ensuring airtight sealing, durability under high pressure, and seamless switching between normal and air-pump modes without affecting engine performance.
How can the system's reliability be ensured for long-term operation in urban buses?
Reliability can be ensured through rigorous testing under various operating conditions, using high-quality materials, and implementing regular maintenance protocols.