{"id":31099,"date":"2026-08-01T07:39:53","date_gmt":"2026-08-01T07:39:53","guid":{"rendered":"https:\/\/www.leiliautoparts.com\/?p=31099"},"modified":"2026-08-01T07:40:56","modified_gmt":"2026-08-01T07:40:56","slug":"tco-bus-wiper-bulk-procurement","status":"publish","type":"post","link":"https:\/\/www.leiliautoparts.com\/zh\/tco-bus-wiper-bulk-procurement\/","title":{"rendered":"Optimal solution for bulk purchase of wiper system for urban buses: from TCO to whole life cycle management"},"content":{"rendered":"
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The core logic of public transport procurement: why TCO is more important than unit price.<\/h2>

The biggest difference between bus group procurement and the retail market lies in the decision-making process. Individual car owners ask, “How much does this set cost?” In contrast, bus groups must measure the\u00a0<\/span>Total Cost of Ownership (TCO)<\/span>\u00a0over the entire vehicle lifecycle.<\/span><\/p>

The TCO of a wiper system consists of four levels:<\/p>

Cost level<\/th>Constituent elements<\/th>Typical proportion<\/th><\/tr><\/thead><\/table><\/div>
<\/colgroup>
Initial purchase cost<\/td>Unit price of wiper assembly, wiper blade, washing component<\/td>35%-45%<\/td><\/tr>
Replacement and maintenance costs<\/td>Service life, replacement frequency, labor hours<\/td>30%-38%<\/td><\/tr>
Inventory holding cost<\/td>Spare parts warehousing, capital utilization, batch management<\/td>10%-15%<\/td><\/tr>
Operating risk cost<\/td>Downtime caused by faults, complaints, and safety risks<\/td>10%-20%<\/td><\/tr><\/tbody><\/table>

An intuitive comparison<\/span>:<\/span><\/strong>\u00a0If a wiper assembly costs 30% less but lasts only half as long, its actual TCO will be about\u00a0<\/span>22% higher<\/span>. Over an 8-year bus operation cycle, this translates to nearly 1,000 yuan extra per vehicle on wiper replacement. Multiply that by the fleet size, and you get tens of thousands in additional costs. Zhejiang Lei Li provides a TCO calculation model in many public transport projects, shifting the buyer’s focus from “lowest unit price” to “best overall cycle value.”<\/span><\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\n<\/div>\n

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Scenario 1: General procurement of regular urban buses (8 meters \/ 10 meters \/ 12 meters)<\/h3>

The regular urban bus is the main body of the bus group’s fleet, usually spanning three levels: 8-meter mini-branch buses, 10-meter standard buses, and 12-meter main line large buses. The first major problem faced by the centralized procurement is the fragmentation of spare parts caused by the mixed models.<\/p>

The Modular Solution<\/span><\/h4>

Rain Wiper’s solution promotes a modular product architecture. Take the wiper motor, for example. Through a unified mounting hole platform and an adjustable linkage mechanism, the same basic model covers all three vehicle lengths (8\u201312 meters). The built-in configurable module adapts the gear ratio and power to different front windshield areas.<\/p>

For the bus group, this means:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\tModular design reduces spare parts inventory by over 60%.\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t
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Originally, it was necessary to reserve three motors for each of the three models, but after modularization, only one is needed.<\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\tInventory turnover rate improved\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t
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General parts have a faster consumption rate and lower capital utilization.<\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\tSimplified maintenance training\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t
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The repairman does not need to be familiar with three different disassembly procedures.<\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Real-World Bidding Example<\/span><\/h4>

In a 2020 wiper part bidding procurement, the Nanjing Bus Group budget was 945,900 yuan. The technical requirements explicitly cited the national standard threshold: “In line with GB 15086-2013\u00a0<\/span>Performance Requirements and Test Methods for Windshield Wiper and Washer<\/span><\/em>.” This demonstrates that large-scale bus procurement enforces strict supplier qualifications, product certification, and warranty terms. For instance, a minimum 1-year warranty, free replacement during that period, and full compensation for related damage have become standard clauses in collective procurement contracts.<\/span><\/p>

\"bus

bus motor<\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\n<\/div>\n

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Scenario 2: High-frequency operation challenges of BRT (Bus Rapid Transit)<\/h3>

BRT systems operate under a completely different logic than traditional buses. On a typical Chinese BRT line, peak-hour departure intervals shrink to just 2\u20133 minutes, and a single vehicle runs over 16 hours daily. Consequently, the wiper system faces near-continuous operating conditions.<\/span><\/p>

When conducting centralized procurement for BRT, groups should pay special attention to three critical indicators:<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\tContinuous operation reliability\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t
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The design life of an ordinary bus wiper motor usually ranges from 800,000 to 1,000,000 cycles. However, BRT's daily wiper frequency is 2\u20133 times higher. Lei Li custom-builds motors for BRT with reinforced brush materials and an optimized commutator design. These motors increase continuous operation life to over\u00a0<\/span>1.2 million cycles<\/span>, meeting the goal of zero motor replacements within the 8-year BRT vehicle lifecycle.<\/span><\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\tQuickly change the structural design.\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t
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BRT maintenance windows are extremely short\u2014typically only 2\u20134 hours at night. Traditional bolt removal methods take too long. Therefore, Zhejiang Lei Li has developed a quick-plug linkage joint and a tool-free wiper blade latch. This design reduces replacement time from 30 minutes to less than\u00a0<\/span>8 minutes<\/span>, significantly cutting downtime losses.<\/span><\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\tHigh-capacity washing system\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t
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BRT buses operate frequently and traverse dusty roads, so they consume much more detergent than regular buses. To address this, Lei Li increased the detergent tank capacity from the standard 5L to\u00a0<\/span>10L<\/span>. Additionally, the system uses a dual-nozzle, large-area atomization nozzle, which covers about 40% more area with the same amount of water.<\/span><\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\t\t\t\t\t\"700-I\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\n<\/div>\n
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Scenario 3: Low power consumption integration of new energy electric buses<\/h3>

The proportion of new energy buses in the national fleet continues to rise, with some first-tier cities already achieving 100% electrification. Electric buses have unique requirements for wiper systems that differ sharply from gasoline-powered vehicles.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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2026.8.1<\/div>\r\n
Low-power design<\/div>\r\n <\/div>\r\n
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The electric motor of the new energy bus is equipped with a permanent magnet DC solution.<\/div>\r\n \r\n <\/path><\/svg><\/span>\r\n <\/path><\/svg><\/span>\r\n <\/span>\r\n <\/div>\r\n
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Traditional gasoline bus wiper motors draw power directly from the generator, so energy consumption is rarely a concern. However, every electrical device on an electric bus directly drains driving range. Lei Li's new energy bus motor uses a permanent magnet DC scheme, controlling rated power below\u00a0<\/span>120W<\/span>\u00a0(about 33% lower than the traditional 180W motor). This design meets the required 140Nm output torque while saving approximately\u00a0<\/span>80 degrees of electricity per vehicle per year<\/span>.<\/span><\/p> <\/div>\r\n <\/div>\r\n <\/div>\r\n <\/div>\r\n

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Electromagnetic compatibility (EMC)<\/div>\r\n <\/div>\r\n
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The EMI filter is integrated into the motor by Lei Li.<\/div>\r\n \r\n <\/path><\/svg><\/span>\r\n <\/path><\/svg><\/span>\r\n <\/span>\r\n <\/div>\r\n
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New energy buses are packed with sensitive electronic devices\u2014battery management systems, motor controllers, CAN buses, and display screens. The electromagnetic interference from a wiper motor can cause dashboard flickering or even controller malfunctions. To mitigate this, Lei Li integrates an EMI filter directly into the motor. The motor has passed\u00a0<\/span>ECE R10 electromagnetic compatibility certification<\/span>, ensuring it does not interfere with the vehicle's electronic systems.<\/span><\/p> <\/div>\r\n <\/div>\r\n <\/div>\r\n <\/div>\r\n

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Compatible with all 24V DC systems<\/div>\r\n <\/div>\r\n
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The new energy bus windshield wiper assembly of Lei Li adopts a 24V wide voltage input design.<\/div>\r\n \r\n <\/path><\/svg><\/span>\r\n <\/path><\/svg><\/span>\r\n <\/span>\r\n <\/div>\r\n
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As buses electrify, the vehicle power supply is gradually transitioning from a mixed 12V\/24V architecture to a pure 24V DC system. Lei Li's new energy bus wiper assembly uses a\u00a0<\/span>24V wide-voltage input design<\/span>, supporting a fluctuation range of 18\u201332V. This robust design prevents voltage spikes from stalling or burning out the motor.<\/span><\/p> <\/div>\r\n <\/div>\r\n <\/div>\r\n <\/div>\r\n <\/div>\r\n \t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\n<\/div>\n

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After-sales response: the “last mile” of the success or failure of centralized procurement<\/h3>

Even the best product cannot save a procurement deal if after-sales service falls short. In fact, poor service severely undermines the value of centralized procurement. Consequently, bus group wiper accessory announcements almost always include strict service commitment clauses. For example, the Huangshi Bus Group bid documents clearly require suppliers to “reach the site within 4 hours and resolve the fault within 12 hours.” Similarly, Shanghai Pudong Bus procurement rules stipulate that “the contract will be terminated if there are two quality issues within six months.”<\/p>

Zhejiang Lei Li has established a three-level after-sales response system for the bus group:<\/h4>\t\t\t\t\t\t\t\t<\/div>\n\t\t\n<\/div>\n
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\n\t\t\t\t\t\tDelivered to the group's designated warehouse on a monthly basis as needed, achieving zero inventory pressure.\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t
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\n\t\t\t\t\t\t\"KG-010\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\tLevel 1 response (regular supply)<\/span><\/cite>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\tThe national regional warehouse will complete the transfer of emergency items within 48 hours to support bus operations without being affected by unexpected failures.\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t
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\n\t\t\t\t\t\t\"KG-007\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\tLevel 2 response (emergency allocation)<\/span><\/cite>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\tProvide on-site technical support personnel for large customers to assist the bus repair workshop in completing the first installation training and difficult fault diagnosis.\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t
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\n\t\t\t\t\t\t\"KG-009\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\tLevel 3 response (on-site service)<\/span><\/cite>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t
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Suggestions for the implementation of the centralized procurement plan<\/h3>

Based on the analysis of the three scenarios above, we suggest constructing an evaluation framework from the following four dimensions when formulating a bulk procurement plan for the wiper system:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\tTechnical parameters are benchmarked.\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t
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Hard indicators such as motor power, output torque, protection grade, and working temperature range must match the main model of the fleet.<\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\tModular compatibility\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t
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Priority should be given to product lines with a high degree of generalization in order to reduce the number of spare parts and inventory costs.<\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\tSupplier qualification\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t
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The IATF 16 949 certification is the basic threshold for entering the host system, and at the same time, it pays attention to whether the supplier has its own production line and R&D team.<\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\tThe after-sales commitment can be quantified.\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t
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Write the response time, warranty period, and compensation clause into the contract and set up KPI assessment.<\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Conclusion: From \"Buying Parts\" to \"Buying Solutions\"<\/span><\/h3>

The procurement of windshield wipers may appear trivial among hundreds of accessory categories. Yet, when you multiply this expense across the entire fleet and over the full service life, the optimization potential becomes immense. Shifting from a bicycle-based unit-price mindset to a holistic TCO perspective\u2014and evolving from \"buying parts\" to \"buying solutions\"\u2014represents the true breakthrough in bulk procurement. We therefore urge all procurement professionals to embrace this comprehensive approach.<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\n<\/div>\n

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\u5173\u4e8e\u6211\u4eec<\/h3>

\u6d59\u6c5f\u96f7\u5229\u6c7d\u8f66\u96f6\u90e8\u4ef6\u6709\u9650\u516c\u53f8.<\/a> has been engaged in the R&D and manufacturing of automotive wiper systems for over 30 years. Our product line covers bus wiper assemblies<\/a>, motors, arms, blades, linkage mechanisms, and washing system components. We have successfully passed the IATF 16949 quality management system certification. Moreover, our supporting brands cover Yutong, Jinlong, Jinli, Zhongtong, BYD, Ankai, and other mainstream domestic bus manufacturers. Furthermore, our new energy bus wiper system has achieved mass production and is now serving the bus groups of many cities across China. In addition, our applicable fields include urban public transport, long-distance passenger transport, tourist buses, school buses, BRT rapid buses, double-decker buses, and airport shuttle buses.<\/span><\/p><\/div><\/div><\/div><\/div><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

How bus fleet operators optimize wiper system procurement: TCO analysis, modular spare parts, and fast after-sales response for urban transit, BRT and electric buses.<\/p>","protected":false},"author":4,"featured_media":31102,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-31099","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nTCO-Driven Wiper Sourcing for Bus Fleets<\/title>\n<meta name=\"description\" content=\"TCO drives bus wiper buying decisions. 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