案例背景

本案例取自车辆传动装置技术领域的实用新型专利中英文对照文本，整体内容分为基础传动方法实施例、多工况控制逻辑、整体技术有益效果总结三大部分，属于机械传动、车辆电控、动力声学交叉的复合型专利文本。该混动装置适配新能源汽车，同时覆盖纯电、混动、直驱、原地发电多种工作模式，涉及电机双向能量转换、功率耦合分配、发动机拖启等特色技术流程。翻译面向国内外专利审查人员、汽车传动研发工程师，既要遵循国内实用新型专利书面规范，亦要匹配欧美动力系统专利惯用术语体系。此类翻译案例属于混动类汽车专利翻译的典型教学范例。

Ø 原文与译文

Ø 译文解析：

该译文统一采用国际专利通用行文范式，统一部件编号标注格式、工况描述句式及功率运算逻辑，消除前后段落术语、语态不统一的问题。针对中文原文流水铺陈的多分支工况表述，译文通过分号、分词状语重构英文分层句式，清晰区分不同模式的触发条件与先后时序。功率求和、功率差值等数值关系采用传动领域标准化表述，规避数学对比歧义。有益效果段落摒弃中式直译短语，替换为海外专利通行的节油（fuel economy）、排放（emissions）专业表述，兼顾技术严谨性与外文审查阅读习惯，完整保留原文全部技术特征，无信息增删或语义偏移。

1) 本段翻译难点主要是专利用语规范与动力系统术语精准性两方面。文本包含“基于同一技术构思”“至少一个实施例”等专利固定表述，需匹配国际专利通用的标准译法，不可随意直译。同时涉及纯电/混动模式切换、功率流合成等混动领域专属技术内容，电机启停、离合器啮合、发动机拖启等动作术语需匹配传动领域专利的通用措辞。此外，方法步骤嵌套多层逻辑，需兼顾英文专利的句式习惯，保证功率计算逻辑表述无歧义。

经AI辅助翻译并优化提示词后，生成以下译文：

Based on the same technical concept, at least one embodiment further provides a transmission method adopting the aforementioned continuously variable hybrid transmission device, which comprises the following steps: when the power control unit 1 operates the pure electric mode, the power control unit 1 controls a first electric machine 2 to start and a second electric machine 3 to remain stationary, so that the output power of a power distribution unit 5 is equal to the output power of the first electric machine 2; when the power control unit 1 operates the hybrid mode, the power control unit 1 controls the first electric machine 2 to start, the second electric machine 3 to start, and the clutch 42 to engage until the second electric machine 3 drives and starts the engine 41. Part of the output power of the engine 41 is supplied to the first electric machine 2 and the storage battery 6 via the second electric machine 3, such that the power output by the power distribution unit 5 is the sum of the output power of the first electric machine 2 and the engine 41 minus the output power of the second electric machine 3.

AI译后编辑要点：

(1) 将“同一技术构思”对应译法从technical concept调整为inventive concept，同时把adopting替换为utilizing，匹配专利文本的惯用表述，符合国际专利申请的行文规范；

(2) 优化混动专业术语。将普通表述的电机“启动”由start改为activate、“静止状态”改为standing idle、“发动机启动”改为crank，均采用动力传动领域专利的标准措辞，专业度更优，也匹配海外车企专利的用词习惯；

(3) 梳理冠词使用逻辑，统一首次提及的工作模式，零部件前加不定冠词a，避免定冠词带来的不当限定歧义，契合英文专利具体实施章节的冠词使用惯例；

(4) 将is equal to简化为equals，对功率计算进行标准化表述；同时调整功率求和句式的结构，表述更凝练严谨，减少数学类表述的冗余感，符合专利参数说明的行文风格。

2) 本段翻译难点在于工况逻辑梳理与术语体系统一两方面。文本涵盖混动、直驱启动、直驱稳态、原地发电四类运行模式，其中直驱模式嵌套两个时序阶段，中文流水式表述若直译易打乱层级关系，需重构语序明确工况先后与触发条件。该段同时涉及电机待机、功率合成等混动专属表述，需兼顾术语的行业通用性与全文术语一致性，功率和、差值等数学关系表述也需做到严谨无歧义，符合专利文件的准确性要求。

经AI辅助翻译并优化提示词后，生成以下译文：

When the power control unit 1 operates in hybrid mode, the power control unit 1 controls the second electric motor 3 to superimpose power onto the power split unit 5, such that the output power of the power distribution unit 5 equals the sum of the output power of the first electric motor 2, the second electric motor 3 and the engine 41. When the power control unit 1 operates in direct drive mode, the power control unit 1 controls the startup of the second electric motor 3 and engagement of the clutch 42 until the second electric motor 3 cranks the engine 41, while the first electric motor 2 maintains idling. As a result, the output power of the power distribution unit 5 is the difference between the output power of the engine 41 and the second electric motor 3. After the engine 41 is started under the direct drive mode executed by the power control unit 1, the power control unit 1 controls the second electric motor 3 to stand still, so that the output power of the power distribution unit 5 is equal to the output power of the engine 41. When the power control unit 1 operates in stationary power generation mode, the power control unit 1 controls the first electric motor 2 to remain stationary, the clutch 42 to engage and the second electric motor 3 to activate, so that the engine 41 charges the battery pack 6 via the second electric motor 3.

AI译后编辑要点：

(1) 将electric motor调整为electric machine，同时替换battery pack为storage battery，匹配混动电机双向工作的属性，也与前文专利术语体系保持统一，避免窄化部件功能；

(2) 统一核心部件的名称表述。将power split unit统一为power distribution unit，消除同物异名问题，保证全文核心部件名称一致，遵循专利翻译术语译名统一的规范要求；

(3) 梳理工况的逻辑与时序关系，调整直驱模式的分句结构，采用现在完成时明确发动机启动前后的阶段划分，同步优化连接词表述，使不同工况的层级更清晰；

(4) 将功率之和的表述调整为combined output power，功率差值部分补充that of明确指代对象，优化功率关系的表述精度，避免混淆比较对象，遵循专利参数表述的严谨性要求。

3) 本段翻译难点为混动传动专属技术描述与中英文专利表达习惯差异。文中包含扭矩柔性分配、无顿挫输出、发动机负荷分流等行业特色表述，直译易出现中式工程英语；“节能减排”等概括性词组不能直接字面翻译，需适配海外专利惯用的油耗、排放专业表述。同时，原文由三层优势并列构成，分句衔接依靠中文分号。若直译易造成句式零散，需借助分词、衔接词重构英文长句逻辑；还需统一整机、动力部件术语，保证与前文实施例用词体系连贯。

经AI辅助翻译并优化提示词后，生成以下译文：

In summary, the present utility model flexibly distributes torques of the first electric machine, the second electric machine and the engine assembly via a power control unit and a power distribution unit, so as to realize continuous power output without torque jerk. Meanwhile, the second electric machine can shunt the rotational speed and torque of the engine assembly during power generation, allowing the engine assembly to operate under its optimal economic working condition and achieve energy conservation and emission reduction. In addition, the utility model features a simple mechanical structure with fewer components, which cuts manufacturing costs and improves overall reliability. The system can drive vehicle wheels, tractor PTO devices and other mechanical assemblies to realize high-efficiency hybrid power output.

AI译后编辑要点：

(1) 修正技术术语偏差，将engine assembly调整为engine unit，shunt改为divert part of the rotational speed and torque load，torque jerk替换为torque disruption，遵循混动领域描述负荷分流、动力冲击的标准措辞，避免语义模糊；

(2) 将中式直译energy conservation and emission reduction替换为improved fuel economy together with lower exhaust emissions，符合欧美动力系统专利描述中节油减排效果的通用表述；

(3) 将features simple structure、cuts costs等偏口语表述，升级为adopts a simplified mechanical structure、reduces manufacturing costs、elevates overall system reliability，优化专利书面语体，更契合专利的正式行文风格；

(4) 规范专业部件全称与指代。补齐缩写PTO的完整表述power take-off，将指代模糊的the system调整为the device。全文主语指代统一，消除阅读歧义。

Ø 词汇解析