On September 15th, the Great Wall Motor Company’s Fengchao Yichuang Yangzhong Industrial Park (hereinafter referred to as the “Yangzhong Factory”) was visited by CCTV News during a live broadcast. As the production factory of the Lemon Hybrid DHT Transmission Assembly, the Yangzhong Factory introduced for the first time the four-line production line of the Lemon Hybrid DHT Transmission Assembly to the public.
Introduction to Lemon Hybrid DHT
The Great Wall Motor Company states that the Lemon Hybrid DHT has the following “1-2-3” technical characteristics:
- “1” adopts a high-integration hybrid system;
- “2” supports both HEV and PHEV powertrains;
- “3” has three sets of powertrain assemblies: “1.5 L+DHT 115”, “1.5 T+DHT 130”, and “1.5 T+DHT 130+P 4”.
The Great Wall Motor Company’s Lemon Hybrid DHT adopts a two-gear parallel-axis structure, which expands the efficient direct driving range of the engine and further improves overall efficiency. Through an intelligent control system, the Lemon Hybrid DHT can seamlessly switch between various modes of operation such as EV driving, series drive, parallel drive, and energy recovery. If classified according to usage scenarios, the operational states of the Lemon Hybrid DHT are as follows:
- In a parking scenario, the vehicle’s engine does not start and the energy consumption is 0;
- In urban road scenarios with slow driving speeds such as stop-and-go traffic and non-congested roads, the system intelligently switches between “EV mode” and “series mode”, and the engine always operates at the most efficient range;
- When cruising at medium speeds above 35 km/h, the system can intelligently choose between “EV mode” and “series mode” based on system load;
- During mid-speed acceleration for overtaking, the engine, drive motor, and generator output together at full load to provide optimum power response;
- During high-speed cruising, the system intelligently selects between “EV mode” or “engine eco-mode direct drive mode” based on system load. At this time, the engine eco-mode direct drive provides the highest efficiency, with fuel consumption 10%-15% better than series mode;
- During high-speed overtaking, the engine eco-mode direct drive is switched to power-mode direct drive, and the engine, drive motor, and generator output together at full load to provide maximum power and the highest power response;
- During deceleration and braking, energy recovery mode is entered to increase energy efficiency.
Birthplace – Yangzhong Factory## Introduction
Great Wall Motor’s Yangzhong factory uses flexible, automated, and information-based design concepts for the production line of the Lemon hybrid DHT transmission assembly. It also uses a quality management system to monitor real-time production data, implement advanced prevention measures, and ensure stable production at a full rated pace of no more than 113 seconds. In addition, the assembly line of the Yangzhong factory uses a flexible design, and the error prevention coverage rate can reach 100%. The assembly testing uses a comprehensive testing platform that can achieve 100% NVH testing. Yangzhong factory also uses the MES information system to achieve accurate traceability of each part in quality control.
What is Great Wall Motor’s “Forest Ecology”?
The new energy field involves an extremely complex industrial chain system, and a benign new energy industrial chain ecology must be built to establish advantages in competition. Considering this reason, Great Wall Motors has made a forward-looking overall layout – “Forest Ecology” of Great Wall Motor. In “Forest Ecology”, the new energy layout occupies a very important position.
Great Wall Motor’s Vice President, Fu Xiaokang said:
“Great Wall Motor’s Forest Ecology is a set of ecological systems that place the whole vehicle at the core, comprehensively lay out intelligent and new energy-related technology industries, and achieve multi-species interaction and sustainable evolution. Under the support of Forest Ecology, Great Wall Motor’s entire design, development, and production system can quickly form end-to-end response capabilities around user needs. Based on the customer-centric operation concept, each brand can also continuously improve technology to help Great Wall Motors, forming an ecosystem of interaction and mutual growth.”
Great Wall Motor also introduced that around the Forest Ecology system, Great Wall Motor can achieve the effective integration of resources internally and form a powerful and stable internal collaborative mechanism. Externally, Great Wall Motor’s various high-tech subsidiaries can actively participate in market competition and empower the entire industry. Forest Ecology is a customer demand-oriented end-to-end responsive ecological chain system and where high-tech clusters are defined that can determine the future of automobiles. Great Wall Motor hopes that under the support of Forest Ecology, the company can move towards a “global intelligent technology company” transformation.
This article is a translation by ChatGPT of a Chinese report from 42HOW. If you have any questions about it, please email bd@42how.com.